Structure of Fmoc-Cha-OH
CAS No.: 135673-97-1
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| CAS No. : | 135673-97-1 |
| Formula : | C24H27NO4 |
| M.W : | 393.48 |
| SMILES Code : | O=C(O)[C@@H](NC(OCC1C2=C(C3=C1C=CC=C3)C=CC=C2)=O)CC4CCCCC4 |
| English Name : | Fmoc-Cha-OH |
| MDL No. : | MFCD00065614 |
| InChI Key : | HIJAUEZBPWTKIV-QFIPXVFZSA-N |
| Pubchem ID : | 978326 |
| Num. heavy atoms | 29 |
| Num. arom. heavy atoms | 12 |
| Fraction Csp3 | 0.42 |
| Num. rotatable bonds | 8 |
| Num. H-bond acceptors | 4.0 |
| Num. H-bond donors | 2.0 |
| Molar Refractivity | 111.9 |
| TPSA ? Topological Polar Surface Area: Calculated from |
75.63 Ų |
| Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
3.07 |
| Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
5.78 |
| Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
4.95 |
| Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
3.65 |
| Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
4.14 |
| Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
4.32 |
| Log S (ESOL):? ESOL: Topological method implemented from |
-5.7 |
| Solubility | 0.000787 mg/ml ; 0.000002 mol/l |
| Class? Solubility class: Log S scale |
Moderately soluble |
| Log S (Ali)? Ali: Topological method implemented from |
-7.14 |
| Solubility | 0.0000287 mg/ml ; 0.0000000729 mol/l |
| Class? Solubility class: Log S scale |
Poorly soluble |
| Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-6.29 |
| Solubility | 0.000201 mg/ml ; 0.000000511 mol/l |
| Class? Solubility class: Log S scale |
Poorly soluble |
| GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
High |
| BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg |
No |
| P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) |
Yes |
| CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) |
No |
| CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) |
Yes |
| CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
Yes |
| CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) |
No |
| CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) |
Yes |
| Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-4.6 cm/s |
| Lipinski? Lipinski (Pfizer) filter: implemented from |
0.0 |
| Ghose? Ghose filter: implemented from |
None |
| Veber? Veber (GSK) filter: implemented from |
0.0 |
| Egan? Egan (Pharmacia) filter: implemented from |
0.0 |
| Muegge? Muegge (Bayer) filter: implemented from |
1.0 |
| Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat |
0.56 |
| PAINS? Pan Assay Interference Structures: implemented from |
0.0 alert |
| Brenk? Structural Alert: implemented from |
0.0 alert: heavy_metal |
| Leadlikeness? Leadlikeness: implemented from |
No; 1 violation:MW<3.0 |
| Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
4.14 |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Multistep reaction; |
[ 122889-11-6 ]
[ 35737-15-6 ]
[ 35661-38-2 ]
[ 135673-97-1 ]

[ 35661-60-0 ]
[ 71989-18-9 ]
[ 104091-08-9 ]
[ 135673-97-1 ]

[ 35661-60-0 ]
[ 71989-18-9 ]
[ 108-24-7 ]
[ 104091-08-9 ]
[ 135673-97-1 ]

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 95% | The molecular scaffold 3 was synthesized using standard solid-phase peptide synthesis methods. The 2-chlorotrityl-chloride resin (Novabiochem, loading 1.4 mmol/g) was used as solid support. For loading of the resin (100 mg, 0.14 mmol) 2 equiv. Fmoc-protected amino acid and 3 equiv. DIPEA (74 mul, 0.42 mmol) were dissolved in 2 ml CH2Cl2 and the reaction mixture was added to the resin. The reaction mixture was shaken overnight at room temperature. The resin was washed three times with 2 ml CH2Cl2 and 2 ml DMF. For Fmoc-deprotection the resin was treated two times for 15 min. with 2 ml 30 percent piperidine/DMF. A standard protocol was used for solid phase peptide synthesis: 4 equiv. Fmoc-protected amino acid, 4 equiv. HBTU (212 mg, 0.56 mmol), 4 equiv. HOBt (76 mg, 0.56 mmol) and 8 equiv. DIPEA (196 ml, 1.12 mmol) were dissolved in 2 ml CH2Cl2/DMF (1/1; v/v). The reaction mixture was stirred 20 min. at room temperature and then added to the resin. The reaction mixture was shaken for 2 hours at room temperature.For the cleavage of the peptide 3 from the solid-phase the resin was treated two times for 15 min. with 2 ml 2 percent TFA/CH2Cl2 (v/v). The solvent was co-evaporated with toluene under reduced pressure and the product was purified by preparative HPLC (H2O + 0.1 percent TFA; 10-95 percent CH3CN, 15 min, 120 ml/min, column: Sun Fire 50x100 mm, Waters). |
[ 68858-20-8 ]
[ 35661-60-0 ]
[ 35661-39-3 ]
[ 936707-21-0 ]
[ 71989-26-9 ]
[ 79990-15-1 ]
[ 135673-97-1 ]
[ 166108-71-0 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: 8-(9-fluorenylmethyloxycarbonyl-amino)-3,6-dioxaoctanoic acid With N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; for 16h; Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: Fmoc-Val-OH; Fmoc-Leu-OH; N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine; C38H41N3O8; Fmoc-Lys(tert-butoxycarbonyl); N-(9-fluorenylmethoxycarbonyl)-D-alanine; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
[ 35661-40-6 ]
[ 77128-73-5 ]

[ 135673-97-1 ]
[ 137018-93-0 ]
[ 1616762-25-4 ]
[ 35661-40-6 ]
[ 77128-73-5 ]

[ 135673-97-1 ]
[ 137018-93-0 ]
[ 1049832-64-5 ]
[ 35661-40-6 ]
[ 77128-73-5 ]

[ 135673-97-1 ]
[ 116821-47-7 ]
[ 1616762-32-3 ]
[ 35661-40-6 ]
[ 77128-73-5 ]

[ 135673-97-1 ]
[ 116821-47-7 ]
[ 1215027-80-7 ]
[ 77128-73-5 ]
[ 135673-97-1 ]
[ 158922-07-7 ]
[ 35661-40-6 ]
[ 77128-73-5 ]

[ 135673-97-1 ]
[ 158922-07-7 ]
[ 35661-40-6 ]
[ 77128-73-5 ]

[ 135673-97-1 ]
[ 158922-07-7 ]
[ 1215027-83-0 ]
[ 857478-30-9 ]
[ 14464-29-0 ]



[ 135673-97-1 ]
[ 169555-95-7 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 186.1 mg | Example 29] (0337) (Synthesis method AC): Production of Ac-[D-Hyp24,Iva25,28,Pya(4)26,Cha27,36,Lys30,Aib31]-PYY(23-36) (compound No. 298) Compound No. 298: (0338) Synthesis of Ac-[D-Hyp24,Iva25,28,Pya(4)26,Cha27,36,Lys30,Aib31]-PYY (23-36) (0339) H-Asn(Trt)-Lys(Boc)-Aib-Thr(But)-Arg(Pbf)-Gln(Trt)-Arg(Pbf)-Cha-Sieber Amide resin (SEQ ID NO:177) (952.8 mg, 0.25 mmol) obtained in Example 20 was weighed and placed in a reaction vessel, washed with DMF, and stirred in DMF for 20 min to swell the resin. Then, the resin was treated with Fmoc-Iva-OH (339.4 mg, 1 mmol), 0.5 M HOAt/DMF solution (2 mL, 1 mmol), DIPCDI (159 muL, mmol) for 120 min. The N-terminal Fmoc group was removed by 20percent piperidine/DMF treatment. By a similar procedure, Cha was introduced. In the same manner, removal of Fmoc group and condensation were repeated to introduce Pya(4), Iva, D-Hyp, Ser(But). After removal of Fmoc, the obtained resin was treated with AcOSu (157.1 mg, 1 mmol), DIEA (174.2 muL, 1 mmol) in DMF for 60 min, and washed with MeOH and dried to give Ac-Ser(But)-D-Hyp-Iva-Pya(4)-Cha-Iva-Asn(Trt)-Lys(Boc)-Aib-Thr(But)-Arg(Pbf)-Gln(Trt)-Arg(Pbf)-Cha-Sieber Amide resin (1.1162 g). The obtained resin (1.1162 g) was treated with TFA: thioanisole: m-cresol: H2O: EDT: TIS (80:5:5:5:2.5:2.5) (6 mL) for 120 min, an operation to add diethyl ether to the reaction solution, precipitate a white powder by centrifugation, and remove diethyl ether by decantation was repeated twice. The residue was dissolved in aqueous acetic acid solution, passed through a disc filter with a pore diameter 0.45 mum to remove fine granules, and concentrated in an evaporator. After confirmation of the purity of the obtained crude peptide solution by HPLC, the peptide was purified by preparative HPLC in 6 portions using Daisopak-SP100-5-ODS-P 2×25 cm, and Solution A: 0.1percent TFA-water, Solution B: 0.1percent TFA-containing acetonitrile, flow rate 8 mL/min, A/B: 75/25-65/35 linear concentration gradient elution (60 min) was performed. The eluted object product was fractionated in test tubes, and each fraction was analyzed by HPLC to specify fractions containing only the object product. They were combined and freeze-dried to give 250.2 mg of a white powder. (0340) The obtained purified sample (250.2 mg, 140.47 mumol) was dissolved in water (20 mL), and AG 1x8 AcO resin (2.34 mL, 2.81 mmol equivalents) was added. The solution was stood for 1 hr while occasionally stirring with hand, passed through a disc filter with a pore diameter 0.45 mum to remove fine granules, concentrated in an evaporator to reduce the liquid amount to about 5 mL, and the solution was freeze-dried by cooling in a dry ice bath to give 186.1 mg of a white powder. MALDI-TOF-MS analysis, (M+H)1780.6 (Calculated 1781.1) HPLC elution time: 9.2 min elution condition (HPLC mode d): column: Merck Chromolith Performance RP-18e(4.6×100 mm I.D.) eluent: using Solution A: 0.1percent TFA-water, Solution B: 0.1percent TFA-containing acetonitrile, A/B: 80/20 - 30/70 linear concentration gradient elution (25 min) flow rate: 1.0 mL/min |
[ 117666-97-4 ]
[ 55464-76-1 ]
[ 132327-80-1 ]
[ 135673-97-1 ]
[ 186350-56-1 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Alloc-Lys(Fmoc)-OH With N-ethyl-N,N-diisopropylamine; HATU In 1-methyl-pyrrolidin-2-one Stage #2: With piperidine In 1-methyl-pyrrolidin-2-one Stage #3: N-9-fluorenylmethyloxycarbonyl-4-benzoyl-D-phenylalanine; fumaric acid mono allyl ester; Fmoc-L-Gln(Trt)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
[ 35661-39-3 ]
[ 71989-31-6 ]
[ 35737-15-6 ]
[ 73724-45-5 ]
[ 71989-31-6 ]
[ 132684-60-7 ]
[ 135673-97-1 ]
[ 161420-87-7 ]
[ 158599-00-9 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| General procedure: [0798] In a dried flask, 2-chlorotritylchloride resin (polystyrene, 1% crosslinked; loading: 1.4 mmol/g) was swollen in dry CH2C12 for 30 mm (7 ml CH2C12 per g resin). A solution of 0.8 eq of the Fmoc-protected amino acid and 6 eq of DIPEA in dry CH2C12/DMF (4/1) (10 ml per g resin) was added. Afier shaking for 2-4 h at it the resin was filtered off and washed successively with CH2C12, DMF, CH2C12, DMF and CH2C12. Then a solution of dry CH2C12/MeOH/DIPEA (17:2:1) was added (10 ml perg resin).Afier shaking for 3x30 mm the resin was filtered off in a pre-weighed sinter funnel and washed successively with CH2C12, DMF, CH2C12, MeOH, CH2C12, MeOH, CH2C12 (2x) and Et20 (2x). The resin was dried under high vacuum overnight. The final mass of resin was calculated before the qualitative control.[0803] After assembly of the linear peptide, the resin was suspended in 1 ml of 1% TFA in CH2C12 (v/v; 0.14 mmol) for 3 minutes and filtered, and the filtrate was neutralized with 1 ml of 20% DIPEA in CH2C12 (v/v; 1.15 mmol). This procedure was repeated four times to ensure completion of the cleavage. The resin was washed three times with 1 ml of CH2C12. The CH2C12 layers containing product were evaporated to dryness.10804] The fully protected linear peptide was solubilised in8 ml of dry DMF. Then 2 eq. of HA11J and 2. eq. of HOAt in dry DMF (1-2 ml) and 4 eq. of DIPEA in dry DMF (1-2 ml) were added to the peptide, followed by stirring for ca. 16 h. The volatiles were removed by evaporation. The crude cyclic peptide was dissolved in 7 ml of CH2C12 and washed three times with 4.5 ml 10% acetonitrile in water (v/v). The CH2C12 layer was then evaporated to dryness.10805] To fully deprotect the peptide, 7 ml of cleavage cocktail TFADODT/thioanisol/H20 (87.5:2.5:5:5) were added, and the mixture was kept for 2.5-4 hat room tempera- tare until the reaction was completed. The reaction mixture was evaporated close to dryness and the peptide precipitated with 7 ml of cold Et20. The precipitate was washed 3 times with 4 ml of cold Et20. |
[ 35661-39-3 ]
[ 71989-31-6 ]
[ 35737-15-6 ]
[ 73724-45-5 ]
[ 71989-31-6 ]
[ 125238-99-5 ]
[ 132684-60-7 ]
[ 135673-97-1 ]
[ 161420-87-7 ]
[ 158599-00-9 ]

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| General procedure: [0798] In a dried flask, 2-chlorotritylchloride resin (polystyrene, 1percent crosslinked; loading: 1.4 mmol/g) was swollen in dry CH2C12 for 30 mm (7 ml CH2C12 per g resin). A solution of 0.8 eq of the Fmoc-protected amino acid and 6 eq of DIPEA in dry CH2C12/DMF (4/1) (10 ml per g resin) was added. Afier shaking for 2-4 h at it the resin was filtered off and washed successively with CH2C12, DMF, CH2C12, DMF and CH2C12. Then a solution of dry CH2C12/MeOH/DIPEA (17:2:1) was added (10 ml perg resin).Afier shaking for 3x30 mm the resin was filtered off in a pre-weighed sinter funnel and washed successively with CH2C12, DMF, CH2C12, MeOH, CH2C12, MeOH, CH2C12 (2x) and Et20 (2x). The resin was dried under high vacuum overnight. The final mass of resin was calculated before the qualitative control.[0803] After assembly of the linear peptide, the resin was suspended in 1 ml of 1percent TFA in CH2C12 (v/v; 0.14 mmol) for 3 minutes and filtered, and the filtrate was neutralized with 1 ml of 20percent DIPEA in CH2C12 (v/v; 1.15 mmol). This procedure was repeated four times to ensure completion of the cleavage. The resin was washed three times with 1 ml of CH2C12. The CH2C12 layers containing product were evaporated to dryness.10804] The fully protected linear peptide was solubilised in8 ml of dry DMF. Then 2 eq. of HA11J and 2. eq. of HOAt in dry DMF (1-2 ml) and 4 eq. of DIPEA in dry DMF (1-2 ml) were added to the peptide, followed by stirring for ca. 16 h. The volatiles were removed by evaporation. The crude cyclic peptide was dissolved in 7 ml of CH2C12 and washed three times with 4.5 ml 10percent acetonitrile in water (v/v). The CH2C12 layer was then evaporated to dryness.10805] To fully deprotect the peptide, 7 ml of cleavage cocktail TFADODT/thioanisol/H20 (87.5:2.5:5:5) were added, and the mixture was kept for 2.5-4 hat room tempera- tare until the reaction was completed. The reaction mixture was evaporated close to dryness and the peptide precipitated with 7 ml of cold Et20. The precipitate was washed 3 times with 4 ml of cold Et20. |
[ 159610-93-2 ]
[ 35737-15-6 ]
[ 73724-45-5 ]
[ 71989-31-6 ]
[ 132684-60-7 ]
[ 135673-97-1 ]
[ 161420-87-7 ]

[ 158599-00-9 ]

| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| General procedure: [0798] In a dried flask, 2-chlorotritylchloride resin (polystyrene, 1percent crosslinked; loading: 1.4 mmol/g) was swollen in dry CH2C12 for 30 mm (7 ml CH2C12 per g resin). A solution of 0.8 eq of the Fmoc-protected amino acid and 6 eq of DIPEA in dry CH2C12/DMF (4/1) (10 ml per g resin) was added. Afier shaking for 2-4 h at it the resin was filtered off and washed successively with CH2C12, DMF, CH2C12, DMF and CH2C12. Then a solution of dry CH2C12/MeOH/DIPEA (17:2:1) was added (10 ml perg resin).Afier shaking for 3x30 mm the resin was filtered off in a pre-weighed sinter funnel and washed successively with CH2C12, DMF, CH2C12, MeOH, CH2C12, MeOH, CH2C12 (2x) and Et20 (2x). The resin was dried under high vacuum overnight. The final mass of resin was calculated before the qualitative control.[0803] After assembly of the linear peptide, the resin was suspended in 1 ml of 1percent TFA in CH2C12 (v/v; 0.14 mmol) for 3 minutes and filtered, and the filtrate was neutralized with 1 ml of 20percent DIPEA in CH2C12 (v/v; 1.15 mmol). This procedure was repeated four times to ensure completion of the cleavage. The resin was washed three times with 1 ml of CH2C12. The CH2C12 layers containing product were evaporated to dryness.10804] The fully protected linear peptide was solubilised in8 ml of dry DMF. Then 2 eq. of HA11J and 2. eq. of HOAt in dry DMF (1-2 ml) and 4 eq. of DIPEA in dry DMF (1-2 ml) were added to the peptide, followed by stirring for ca. 16 h. The volatiles were removed by evaporation. The crude cyclic peptide was dissolved in 7 ml of CH2C12 and washed three times with 4.5 ml 10percent acetonitrile in water (v/v). The CH2C12 layer was then evaporated to dryness.10805] To fully deprotect the peptide, 7 ml of cleavage cocktail TFADODT/thioanisol/H20 (87.5:2.5:5:5) were added, and the mixture was kept for 2.5-4 hat room tempera- tare until the reaction was completed. The reaction mixture was evaporated close to dryness and the peptide precipitated with 7 ml of cold Et20. The precipitate was washed 3 times with 4 ml of cold Et20. |
[ 84030-19-3 ]
[ 71989-23-6 ]
[ 35737-15-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 135673-97-1 ]
[ 2093027-62-2 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-Trp-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 71989-23-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 102410-65-1 ]
[ 135673-97-1 ]
[ 2093027-78-0 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; Fmoc-Phg-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 71989-31-6 ]
[ 71989-23-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 135673-97-1 ]
[ 2093027-68-8 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Pro-OH; Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 71989-23-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 101555-62-8 ]
[ 135673-97-1 ]
[ 2093027-70-2 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (R)-Pyrrolidine-1,2-dicarboxylic acid 1-(9H-fluoren-9-ylmethyl) ester; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 35661-60-0 ]
[ 71989-23-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 135673-97-1 ]
[ 2093027-72-4 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Leu-OH; Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 71989-23-6 ]
[ 114360-54-2 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 135673-97-1 ]
[ 2093027-74-6 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 71989-23-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 77284-32-3 ]
[ 135673-97-1 ]
[ 2093027-80-4 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; Fmoc-(S)-2-aminohexanoic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 35661-40-6 ]
[ 71989-23-6 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 135673-97-1 ]
[ 2093027-64-4 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: N-Fmoc L-Phe; Fmoc-Ile-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 102410-65-1 ]
[ 86123-11-7 ]
[ 135673-97-1 ]
[ 2093027-98-4 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; Fmoc-Phg-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 35661-60-0 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 86123-11-7 ]
[ 135673-97-1 ]
[ 2093027-84-8 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Leu-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 114360-54-2 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 86123-11-7 ]
[ 135673-97-1 ]
[ 2093027-86-0 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: N-(9-fluorenylmethoxycarbonyl)-D-leucine; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 86123-11-7 ]
[ 84624-17-9 ]
[ 135673-97-1 ]
[ 2093027-90-6 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; N-(9-fluorenylmethoxycarbonyl)-D-valine; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 68858-20-8 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 86123-11-7 ]
[ 135673-97-1 ]
[ 2093027-88-2 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Val-OH; Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 86123-10-6 ]
[ 109425-55-0 ]
[ 86123-11-7 ]
[ 135673-97-1 ]
[ 177966-60-8 ]
[ 2093027-92-8 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-D-Phe-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-β-(3-benzothienyl)-L-alanine Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |

[ 86123-10-6 ]
[ 109425-55-0 ]
[ 96402-49-2 ]
[ 35737-15-6 ]
[ 135673-97-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20percent piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1percent CF3COOH in the gradient system: 30 min gradient,30-100percent CH3CN-H2O-0.1percent CF3COOH at 215 nm. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 84030-19-3 ]
[ 71989-23-6 ]
[ 109425-55-0 ]
[ 86123-11-7 ]
[ 135673-97-1 ]
[ 177966-60-8 ]
[ 2093028-00-1 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-His(1-Bzl)-OH With O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 3h; Inert atmosphere; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.25h; Stage #3: Fmoc-Ile-OH; Fmoc-Orn(Boc)-OH; N-(9-fluorenylmethoxycarbonyl)-D-tryptophan; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-β-(3-benzothienyl)-L-alanine Further stages; | 4.1.1. General procedure for solid phase synthesis of peptides General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |

[ 71989-23-6 ]
[ 109425-55-0 ]
[ 96402-49-2 ]
[ 35737-15-6 ]
[ 135673-97-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20percent piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1percent CF3COOH in the gradient system: 30 min gradient,30-100percent CH3CN-H2O-0.1percent CF3COOH at 215 nm. |

[ 268734-27-6 ]
[ 71989-23-6 ]
[ 109425-55-0 ]
[ 35737-15-6 ]
[ 135673-97-1 ]
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| General procedure: In a reaction vessel, Fmoc-protected Rink amide MBHA resinwas first swelled in DMF for fifteen min. A solution of 20% piperidinein DMF was added and mixture shaken mechanically for15 min resulting in the removal of Fmoc group. The required Fmocprotected amino acids and coupling reagent 2-(1H-benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU) were placed in amino acid vessels sequentially. DMF was added to theamino acid vessel, which was subsequently added (by positivepressure of N2) to the reaction vessel containing the resin, followedby addition of N,N-diisppropylethylamine (DIEA). After 3 h of mechanicalshaking at ambient temperature, the solvent was drainedand the resin washed with DMF (3 x 5 min) followed by methanol(2 x 5 mL). The cycles of deprotection and coupling were repeatedtill the desired peptide chain length was obtained. The resin-boundpeptide was transferred to a round bottom flask, and simultaneousremoval of resin and protective groups was achieved by using acocktail combination of TFA:triisopropylsilane (TIPS):H2O[95:2.5:2.5] for 3 h. The crude peptide was filtered and purified onpreparative HPLC system, and analyzed using solvent system ofCH3CN-H2O-0.1% CF3COOH in the gradient system: 30 min gradient,30-100% CH3CN-H2O-0.1% CF3COOH at 215 nm. |
[ 117666-97-4 ]
[ 35661-39-3 ]
[ 55464-76-1 ]
[ CAS Unavailable ]
[ 2250026-81-2 ]
[ 135673-97-1 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: bis(2-aminoethyl)-ether trityl resin; C29H28N2O6 With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 0.0833333h; Stage #2: With piperidine In 1-methyl-pyrrolidin-2-one Stage #3: N-9-fluorenylmethyloxycarbonyl-4-benzoyl-D-phenylalanine; N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine; allyl hydrogen fumarate; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | Installation of the scaffold and building blocks. Bis-(2-aminoethyl)-ether trityl resin (EMD Millipore, ~ 0.3 mmol/g loading, typically ~ 0.10 mmol scale per macrocycle for initial selections follow-up) was placed into a peptide synthesis vessel and swollen in ~5 mL of dry DMF for 30 m. Constant bubbling of dry nitrogen was maintained throughout the synthesis. In a separate flask, scaffold building block D (Fmoc,Alloc-protected, 5 equiv.) and 2-(lH-7-azabenzotriazol-l-yl)-l,l,3,3-tetramethyl uronium hexafluorophosphate (HATU, 4.75 equiv.) were dissolved in anhydrous DMF (~ 4 mL) followed by the addition of N,N'- diisopropylethylamine (DIPEA, 10 equiv.). After 5 min at room temperature the resulting solution was combined with the pre-swollen resin and mixed with nitrogen bubbling for 30- 60 min. The vessel was then eluted and the resin washed three times with N-methyl-2- pyrrolidone (NMP, -10 vol. each time). Following each coupling step, Fmoc deprotection was effected with 20% piperidine in NMP (-10 vol.) for 5 min, repeated three times, followed by washing three times with NMP (-10 vol.) and twice with DMF (-10 vol.).[00280] The general procedure for amide coupling of building blocks A, B and C involved treatment of the resin with DMF solutions of HATU-activated Na-Fmoc amino acids (5 equiv.) at room temperature for 30-60 minutes, mixing with dry nitrogen bubbling. The general procedure for HATU-activation is treating a solution of Na-Fmoc amino acid (5 equiv.) and HATU (4.75 equiv.) in anhydrous DMF (10 vol.) with DIPEA (10 equiv.) for 5 min at room temperature. For cis-alkene macrocycles, the Fmoc group is not cleaved immediately after C-amino acid coupling. If both cis- and trans- isomers are synthesized, the resin is split in two halves at this point. [00281] Trans -alkene (fumarate) installation. Following the final Fmoc deprotection procedure, the a-amine of building block C is coupled with allyl fumarate monoester (10 equiv.) using activation conditions as previously described with HATU (9.5 equiv.) and DIPEA (20 equiv.) in anhydrous DMF (-10 vol.). N-hydroxysuccinimide (NHS) (10 equiv.) may also be added to this coupling. Allyl fumarate coupling is accomplished by 1 hr mixing with dry nitrogen bubbling, followed by washing five times with NMP (-10 vol.) and three times with CHCb (-10 vol.).[00282] Allyl deprotections for cis and trans macrocycles. Simultaneous allyl ester and N- allyloxycarbonyl group cleavage were effected with three consecutive treatments with a solution of tetrakis(triphenylphosphine)palladium(0) (0.5 equiv. per allyl/alloc group) dissolved in degassed CHCI3 containing acetic acid and N-methylmorpholine (40:2:1 ratio, -20 vol.), mixing by nitrogen bubbling for 1 hour. The resin was then washed twice with -20 vol. of 5 % DIPEA in DMF, twice with a 5 % solution of sodium diethyldithiocarbamate trihydrate in DMF (-20 vol.), twice with a 5 % solution of hydroxybenzotriazolemonohydrate in DMF, and finally washed with 50 % CH2CI2 in DMF and re-equilibrated with anhydrous DMF (-10 vol.).[00283] Cis-alkene ( maleic anhydride ) coupling. Maleic anhydride (10 equiv.) was mixed with DIPEA (20 eq) in DMF and added to the Alloc-deprotected resin to couple to the side- chain amine of the scaffold (D) amino acid. After 1 hour, the resin is washed with DMF three times. The C-amino acid Fmoc group was then removed using 1% DBU in DMF (1,8- diazabicyclo[5.4.0]undec-7-ene), three washes of 1 min (it is necessary to use a non- nucleophilic base at this step, to prevent coupling to the free acid). The resin was then washed three times with 20% DIPEA/DMF for salt exchange.[00284] Cyclization. The resin was treated with pentafluorophenyl diphenylphosphinate (FDPP, 5 equiv.) and DIPEA (10 equiv.) in anhydrous DMF (-10 vol.), mixing by nitrogen bubbling (3 hrs - overnight). The resin was then washed with NMP (-20 vol.), CH2CI2 (-20 vol.) and dried.[00285] Cleavage. The macrocyclized product was cleaved from the resin by two 5 -minute treatments of the macrocycle-bound resin with 95 % TFA containing 2.5 % water and 2.5 % triisopropylsilane (-20 vol.), followed by TFA washes (-5 vol.) until the solvent runs clear (~ 2-4 washes). The TFA solution was dried on a rotary evaporator, and the peptide was precipitated into cold (-80 °C), dry Et20. The ethereal supernatant as decanted, the remaining solid dried and dissolved in a minimum volume of 3:1 DMF-water prior (~ lmL) to filtration and purification. HPLC purification was performed on an Agilent 1260 Infinity LC system with a C18 column (Kinetex, 150 x 30 mm, 5 mih particle, 100 A pore size) using a gradient of 10-60% acetonitrile/water (0.1% TFA) over 27 minutes (15 mL/min). Fractions containing the desired macrocyclic peptide were freeze-dried to produce a white powder. Typical yields were 5-10 % based on theoretical resin loading. |
[ 117666-97-4 ]
[ 108-31-6 ]
[ 35661-39-3 ]
[ CAS Unavailable ]
[ 2250026-81-2 ]
[ 135673-97-1 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: bis(2-aminoethyl)-ether trityl resin; C29H28N2O6 With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 20℃; for 0.0833333h; Stage #2: With piperidine In 1-methyl-pyrrolidin-2-one Stage #3: N-9-fluorenylmethyloxycarbonyl-4-benzoyl-D-phenylalanine; maleic anhydride; N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | Installation of the scaffold and building blocks. Bis-(2-aminoethyl)-ether trityl resin (EMD Millipore, ~ 0.3 mmol/g loading, typically ~ 0.10 mmol scale per macrocycle for initial selections follow-up) was placed into a peptide synthesis vessel and swollen in ~5 mL of dry DMF for 30 m. Constant bubbling of dry nitrogen was maintained throughout the synthesis. In a separate flask, scaffold building block D (Fmoc,Alloc-protected, 5 equiv.) and 2-(lH-7-azabenzotriazol-l-yl)-l,l,3,3-tetramethyl uronium hexafluorophosphate (HATU, 4.75 equiv.) were dissolved in anhydrous DMF (~ 4 mL) followed by the addition of N,N'- diisopropylethylamine (DIPEA, 10 equiv.). After 5 min at room temperature the resulting solution was combined with the pre-swollen resin and mixed with nitrogen bubbling for 30- 60 min. The vessel was then eluted and the resin washed three times with N-methyl-2- pyrrolidone (NMP, -10 vol. each time). Following each coupling step, Fmoc deprotection was effected with 20% piperidine in NMP (-10 vol.) for 5 min, repeated three times, followed by washing three times with NMP (-10 vol.) and twice with DMF (-10 vol.).[00280] The general procedure for amide coupling of building blocks A, B and C involved treatment of the resin with DMF solutions of HATU-activated Na-Fmoc amino acids (5 equiv.) at room temperature for 30-60 minutes, mixing with dry nitrogen bubbling. The general procedure for HATU-activation is treating a solution of Na-Fmoc amino acid (5 equiv.) and HATU (4.75 equiv.) in anhydrous DMF (10 vol.) with DIPEA (10 equiv.) for 5 min at room temperature. For cis-alkene macrocycles, the Fmoc group is not cleaved immediately after C-amino acid coupling. If both cis- and trans- isomers are synthesized, the resin is split in two halves at this point. [00281] Trans -alkene (fumarate) installation. Following the final Fmoc deprotection procedure, the a-amine of building block C is coupled with allyl fumarate monoester (10 equiv.) using activation conditions as previously described with HATU (9.5 equiv.) and DIPEA (20 equiv.) in anhydrous DMF (-10 vol.). N-hydroxysuccinimide (NHS) (10 equiv.) may also be added to this coupling. Allyl fumarate coupling is accomplished by 1 hr mixing with dry nitrogen bubbling, followed by washing five times with NMP (-10 vol.) and three times with CHCb (-10 vol.).[00282] Allyl deprotections for cis and trans macrocycles. Simultaneous allyl ester and N- allyloxycarbonyl group cleavage were effected with three consecutive treatments with a solution of tetrakis(triphenylphosphine)palladium(0) (0.5 equiv. per allyl/alloc group) dissolved in degassed CHCI3 containing acetic acid and N-methylmorpholine (40:2:1 ratio, -20 vol.), mixing by nitrogen bubbling for 1 hour. The resin was then washed twice with -20 vol. of 5 % DIPEA in DMF, twice with a 5 % solution of sodium diethyldithiocarbamate trihydrate in DMF (-20 vol.), twice with a 5 % solution of hydroxybenzotriazolemonohydrate in DMF, and finally washed with 50 % CH2CI2 in DMF and re-equilibrated with anhydrous DMF (-10 vol.).[00283] Cis-alkene ( maleic anhydride ) coupling. Maleic anhydride (10 equiv.) was mixed with DIPEA (20 eq) in DMF and added to the Alloc-deprotected resin to couple to the side- chain amine of the scaffold (D) amino acid. After 1 hour, the resin is washed with DMF three times. The C-amino acid Fmoc group was then removed using 1% DBU in DMF (1,8- diazabicyclo[5.4.0]undec-7-ene), three washes of 1 min (it is necessary to use a non- nucleophilic base at this step, to prevent coupling to the free acid). The resin was then washed three times with 20% DIPEA/DMF for salt exchange.[00284] Cyclization. The resin was treated with pentafluorophenyl diphenylphosphinate (FDPP, 5 equiv.) and DIPEA (10 equiv.) in anhydrous DMF (-10 vol.), mixing by nitrogen bubbling (3 hrs - overnight). The resin was then washed with NMP (-20 vol.), CH2CI2 (-20 vol.) and dried.[00285] Cleavage. The macrocyclized product was cleaved from the resin by two 5 -minute treatments of the macrocycle-bound resin with 95 % TFA containing 2.5 % water and 2.5 % triisopropylsilane (-20 vol.), followed by TFA washes (-5 vol.) until the solvent runs clear (~ 2-4 washes). The TFA solution was dried on a rotary evaporator, and the peptide was precipitated into cold (-80 °C), dry Et20. The ethereal supernatant as decanted, the remaining solid dried and dissolved in a minimum volume of 3:1 DMF-water prior (~ lmL) to filtration and purification. HPLC purification was performed on an Agilent 1260 Infinity LC system with a C18 column (Kinetex, 150 x 30 mm, 5 mih particle, 100 A pore size) using a gradient of 10-60% acetonitrile/water (0.1% TFA) over 27 minutes (15 mL/min). Fractions containing the desired macrocyclic peptide were freeze-dried to produce a white powder. Typical yields were 5-10 % based on theoretical resin loading. |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-(2-aminomethylphenyl)acetic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: isoxazole-5-carboxylic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-(2-aminomethylphenyl)acetic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: 3-methyl-5-isoxazolecarboxylic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-(2-aminomethylphenyl)acetic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; 3-ethylisoxazole-5-carboxylic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-(2-aminomethylphenyl)acetic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: benzoic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: 2-(((fluorenylmethoxcarbonyl)amino)methyl)benzoic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: isoxazole-5-carboxylic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: C23H19NO4 With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: isoxazole-5-carboxylic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (S)-2-(((9H-fluoren-9-yl)methoxy)carbonyl)-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: isoxazole-5-carboxylic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (RS)-2-[(9H-fluoren-9-yl)methoxy]carbonyl}-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acid With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 0.0833333h; Microwave irradiation; Sealed tube; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.00694444h; Microwave irradiation; Sealed tube; Stage #3: isoxazole-5-carboxylic acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid With ethyl cyanoglyoxylate-2-oxime; diisopropyl-carbodiimide In N,N-dimethyl-formamide at 75℃; for 0.0833333h; Microwave irradiation; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide at 75℃; for 0.0583333h; Microwave irradiation; Automated synthesizer; Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; N-(((9H-fluoren-9-yl)methoxy)carbonyl)-N-(5-((tert-butoxycarbonyl)amino)butyl)glycine Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid With ethyl cyanoglyoxylate-2-oxime; diisopropyl-carbodiimide In N,N-dimethyl-formamide at 75℃; for 0.0833333h; Microwave irradiation; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide at 75℃; for 0.0583333h; Microwave irradiation; Automated synthesizer; Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; N-(((9H-fluoren-9-yl)methoxy)carbonyl)-N-(5-((tert-butoxycarbonyl)amino)butyl)glycine Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid With ethyl cyanoglyoxylate-2-oxime; diisopropyl-carbodiimide In N,N-dimethyl-formamide at 75℃; for 0.0833333h; Microwave irradiation; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide at 75℃; for 0.0583333h; Microwave irradiation; Automated synthesizer; Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; N-(((9H-fluoren-9-yl)methoxy)carbonyl)-N-(5-((tert-butoxycarbonyl)amino)butyl)glycine Further stages; |
[ 925240-97-7 ]
[ 103478-62-2 ]
[ 2349480-51-7 ]
[ CAS Unavailable ]
[ 129223-22-9 ]
[ 117322-30-2 ]
[ 77128-70-2 ]
[ 135673-97-1 ]
[ 148983-03-3 ]
[ 2642638-22-8 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 23 % | Stage #1: (S)-cyclohexyl[(9H-fluoren-9-ylmethoxycarbonyl)methylamino]acetic acid; C44H40ClN2O5Pol With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In dichloromethane; N,N-dimethyl-formamide at 20℃; Stage #2: With 1,8-diazabicyclo[5.4.0]undec-7-ene In N,N-dimethyl-formamide at 20℃; Stage #3: N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-leucine; Fmoc-Hph(4-CF3-3-Cl)-OH; Fmoc-Pro-Pro-OH; Fmoc-cLeu-OH; N-(9-fluorenylmethoxycarbonyl)sarcosine; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-MeCha-OH Further stages; | 1 General procedure: A solution of diazabicycloundecene (DBU) in DMF (2% v/v, 0.7 mL) was added to the resin-containing solid-phase reactor to deprotect the N-terminal Fmoc group at room temperature. The deprotection of the first residue was allowed to react for 4.5 minutes, and the deprotection of the second and subsequent residues was allowed to react for 10 minutes, after which the solution was discharged from the frit. DMF (0.7 mL) was added thereto, and the solution was discharged from the frit after standing for 5 minutes. This resin washing step was repeated three more times to obtain a resin in which the N-terminal Fmoc group of the amino acid or peptide bound on the resin was removed to form an amino group.Subsequently, solution 1 (0.3 mL) and solution 2 (0.36 mL) were mixed in a mixing vial of the synthesizer, added to the deprotected resin, and the solid-phase reaction vessel was heated to 40°C. bottom. In the case of a difficult-to-extend sequence, etc., it was heated to 60°C as necessary. The condensation reaction between the amino group on the resin and the Fmoc-protected amino acid was allowed to react for 2.5 hours. In the case of a difficult-to-extend sequence, the reaction was allowed to proceed for 20 hours, if necessary. After reaction, the solution was drained from the frit. If the elongation efficiency was low, this Fmoc-protected amino acid condensation reaction was repeated one or two more times. The resin was then washed three times with DMF (0.7 mL). This deprotection reaction of the Fmoc group followed by the condensation reaction of the Fmoc amino acid was regarded as one cycle, and this cycle was repeated to elongate the peptide on the resin surface. After completion of the peptide elongation, a solution of diazabicycloundecene (DBU) in DMF (2% v/v, 0.7 mL) was added to the resin and allowed to react for 15 minutes to deprotect the Fmoc group. was discharged from the frit. The resulting resin was washed 4 times with DMF (0.7 mL) and then 4 times with DCM (0.7 mL). 1-3-2. Cleavage of the extended peptide from the resin WO2013/100132, WO2018/225864, or the resin obtained by the above method containing 0.75% (v/v) DIPEA 2,2,2- Trifluoroethanol (TFE)/DCM (1/1, v/v, 2 mL) was added, and the mixture was allowed to react at room temperature for 2 hours to carry out a reaction to cut off the peptide chain from the resin. After the reaction, the solution in the tube was recovered from the frit. 2,2,2-Trifluoroethanol (TFE)/DCM (1/1, v/v, 1 mL) was added to the remaining resin and the solution was collected from the frit twice. All of the resulting excised solutions were mixed, mixed with DMF (4 mL) or 1,2-dichloroethane (4 mL), and then the solvent was distilled off under reduced pressure using a high-throughput centrifugal evaporator (HT-12) manufactured by Genevac.1-3-3. Cyclization method of excised peptide The residue obtained by the above method was added to DMF (4 mL).and DCM (4 mL), (1-cyano-2-ethoxy-2-oxoethylideneaminooxy)dimethylamino-morpholino-carbenium hexafluorophosphate (COMU) in DMF (0.5 M , 1.5 equivalents) or O-(7-aza-1H-benzotriazol-1-yl)-N,N,N,N-tetramethyluronium hexafluorophosphate (HATU) in DMF (0.5 M , 1.5 equivalents) and DIPEA (1.8 equivalents) were added and stirred at room temperature for 2 hours to carry out a condensation cyclization reaction between the N-terminal amino group and the C-terminal carboxyl group. . The equivalent number was calculated based on the product of the amount of resin used (usually 100 mg) and the amino acid loading rate (mmol/g) of the resin used as the raw material. After confirming the formation of the target cyclic peptide by LC/MS measurement (SQ Detector 2 manufactured by Waters), the reaction solution was distilled under reduced pressure using a high-throughput centrifugal evaporator (HT-12 manufactured by Genevac) to remove the solvent.1-3-4. Deprotection of protecting group of side chain functional group of cyclic peptide Fmoc-protected amino acid having THP-protected hydroxyl group in side chain, such as Fmoc-MeSer(tBuOTHP)-OH, Fmoc-Ser(tBuOTHP)-OH, Fmoc-MeSer (THP)-OH, Fmoc-Thr(THP)-OH, Fmoc-Ser(THP)-OH, Fmoc-D-MeSer(THP)-OH (compound aa054), Fmoc-cisHyp(THP)-OH (compound aa101 ) and Fmoc-Hyp(THP)-OH (compound aa102), tetramethylammonium hydrogen sulfate (0.05 M) was added to the residue obtained above. ,3-hexafluoroisopropyl alcohol (HFIP) solution (containing 2% (v/v) triisopropylsilane (TIPS) and 1% (v/v) 1,2-dichloroethane) was added to dissolve the residue. After that, the THP protecting group was deprotected by standing at room temperature for 4 hours. After confirming the completion of the reaction by LC/MS (SQ Detector 2 manufactured by Waters), diisopropylethylamine (DIPEA) (70 μL) was added to the reaction solution, and the solvent was distilled off under reduced pressure using a high-throughput centrifugal evaporator (HT-12) manufactured by Genevac. bottom. Another fluoroalcohol such as 2,2,2-trifluoroethanol (TFE) can be used instead of HFIP in this deprotection reaction.For sequences synthesized using Fmoc-MeAsp(OAl)-OH, the cyclic peptide was dissolved in DMF (0.5 M) and treated with tetrakis(triphenylphosphine)palladium(0) (to the peptide) at room temperature under a nitrogen atmosphere. 0.01-0.05 equivalents to the peptide) and phenylsilane (0.7 equivalents to the peptide) were added and stirred for 30 minutes to deprotect the Allyl group. After confirming the formation of the target cyclic peptide by LC/MS measurement (SQ Detector 2 manufactured by Waters), the reaction solution was distilled under reduced pressure using a high-throughput centrifugal evaporator (HT-12 manufactured by Genevac) to remove the solvent.1-3-5. Purification method of cyclic peptide DMF or DMSO was added to the residue obtained by the above method, and insoluble matter was removed by filter filtration, followed by purification by preparative-HPLC to obtain the desired cyclic peptide. Waters Auto Purification System is used as a purification device, YMC-Actus Triart C18 (inner diameter 20 mm, length 100 mm) or YMC-Actus Triart Phenyl (inner diameter 20 mm, length 100 mm) is used as a column, and methanol-ammonium acetate aqueous solution is used as a mobile phase. (50 mmol/L) or acetonitrile water containing 0.1% formic acid was used. |
| 23 % | Stage #1: (S)-cyclohexyl[(9H-fluoren-9-ylmethoxycarbonyl)methylamino]acetic acid; C44H40ClN2O5Pol With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In dichloromethane; N,N-dimethyl-formamide at 20℃; Stage #2: With 1,8-diazabicyclo[5.4.0]undec-7-ene In N,N-dimethyl-formamide at 20℃; Stage #3: N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-leucine; Fmoc-Hph(4-CF3-3-Cl)-OH; Fmoc-Pro-Pro-OH; Fmoc-cLeu-OH; N-(9-fluorenylmethoxycarbonyl)sarcosine; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-MeCha-OH Further stages; | 1 General procedure: A solution of diazabicycloundecene (DBU) in DMF (2% v/v, 0.7 mL) was added to the resin-containing solid-phase reactor to deprotect the N-terminal Fmoc group at room temperature. The deprotection of the first residue was allowed to react for 4.5 minutes, and the deprotection of the second and subsequent residues was allowed to react for 10 minutes, after which the solution was discharged from the frit. DMF (0.7 mL) was added thereto, and the solution was discharged from the frit after standing for 5 minutes. This resin washing step was repeated three more times to obtain a resin in which the N-terminal Fmoc group of the amino acid or peptide bound on the resin was removed to form an amino group.Subsequently, solution 1 (0.3 mL) and solution 2 (0.36 mL) were mixed in a mixing vial of the synthesizer, added to the deprotected resin, and the solid-phase reaction vessel was heated to 40°C. bottom. In the case of a difficult-to-extend sequence, etc., it was heated to 60°C as necessary. The condensation reaction between the amino group on the resin and the Fmoc-protected amino acid was allowed to react for 2.5 hours. In the case of a difficult-to-extend sequence, the reaction was allowed to proceed for 20 hours, if necessary. After reaction, the solution was drained from the frit. If the elongation efficiency was low, this Fmoc-protected amino acid condensation reaction was repeated one or two more times. The resin was then washed three times with DMF (0.7 mL). This deprotection reaction of the Fmoc group followed by the condensation reaction of the Fmoc amino acid was regarded as one cycle, and this cycle was repeated to elongate the peptide on the resin surface. After completion of the peptide elongation, a solution of diazabicycloundecene (DBU) in DMF (2% v/v, 0.7 mL) was added to the resin and allowed to react for 15 minutes to deprotect the Fmoc group. was discharged from the frit. The resulting resin was washed 4 times with DMF (0.7 mL) and then 4 times with DCM (0.7 mL). 1-3-2. Cleavage of the extended peptide from the resin WO2013/100132, WO2018/225864, or the resin obtained by the above method containing 0.75% (v/v) DIPEA 2,2,2- Trifluoroethanol (TFE)/DCM (1/1, v/v, 2 mL) was added, and the mixture was allowed to react at room temperature for 2 hours to carry out a reaction to cut off the peptide chain from the resin. After the reaction, the solution in the tube was recovered from the frit. 2,2,2-Trifluoroethanol (TFE)/DCM (1/1, v/v, 1 mL) was added to the remaining resin and the solution was collected from the frit twice. All of the resulting excised solutions were mixed, mixed with DMF (4 mL) or 1,2-dichloroethane (4 mL), and then the solvent was distilled off under reduced pressure using a high-throughput centrifugal evaporator (HT-12) manufactured by Genevac.1-3-3. Cyclization method of excised peptide The residue obtained by the above method was added to DMF (4 mL).and DCM (4 mL), (1-cyano-2-ethoxy-2-oxoethylideneaminooxy)dimethylamino-morpholino-carbenium hexafluorophosphate (COMU) in DMF (0.5 M , 1.5 equivalents) or O-(7-aza-1H-benzotriazol-1-yl)-N,N,N,N-tetramethyluronium hexafluorophosphate (HATU) in DMF (0.5 M , 1.5 equivalents) and DIPEA (1.8 equivalents) were added and stirred at room temperature for 2 hours to carry out a condensation cyclization reaction between the N-terminal amino group and the C-terminal carboxyl group. . The equivalent number was calculated based on the product of the amount of resin used (usually 100 mg) and the amino acid loading rate (mmol/g) of the resin used as the raw material. After confirming the formation of the target cyclic peptide by LC/MS measurement (SQ Detector 2 manufactured by Waters), the reaction solution was distilled under reduced pressure using a high-throughput centrifugal evaporator (HT-12 manufactured by Genevac) to remove the solvent.1-3-4. Deprotection of protecting group of side chain functional group of cyclic peptide Fmoc-protected amino acid having THP-protected hydroxyl group in side chain, such as Fmoc-MeSer(tBuOTHP)-OH, Fmoc-Ser(tBuOTHP)-OH, Fmoc-MeSer (THP)-OH, Fmoc-Thr(THP)-OH, Fmoc-Ser(THP)-OH, Fmoc-D-MeSer(THP)-OH (compound aa054), Fmoc-cisHyp(THP)-OH (compound aa101 ) and Fmoc-Hyp(THP)-OH (compound aa102), tetramethylammonium hydrogen sulfate (0.05 M) was added to the residue obtained above. ,3-hexafluoroisopropyl alcohol (HFIP) solution (containing 2% (v/v) triisopropylsilane (TIPS) and 1% (v/v) 1,2-dichloroethane) was added to dissolve the residue. After that, the THP protecting group was deprotected by standing at room temperature for 4 hours. After confirming the completion of the reaction by LC/MS (SQ Detector 2 manufactured by Waters), diisopropylethylamine (DIPEA) (70 μL) was added to the reaction solution, and the solvent was distilled off under reduced pressure using a high-throughput centrifugal evaporator (HT-12) manufactured by Genevac. bottom. Another fluoroalcohol such as 2,2,2-trifluoroethanol (TFE) can be used instead of HFIP in this deprotection reaction.For sequences synthesized using Fmoc-MeAsp(OAl)-OH, the cyclic peptide was dissolved in DMF (0.5 M) and treated with tetrakis(triphenylphosphine)palladium(0) (to the peptide) at room temperature under a nitrogen atmosphere. 0.01-0.05 equivalents to the peptide) and phenylsilane (0.7 equivalents to the peptide) were added and stirred for 30 minutes to deprotect the Allyl group. After confirming the formation of the target cyclic peptide by LC/MS measurement (SQ Detector 2 manufactured by Waters), the reaction solution was distilled under reduced pressure using a high-throughput centrifugal evaporator (HT-12 manufactured by Genevac) to remove the solvent.1-3-5. Purification method of cyclic peptide DMF or DMSO was added to the residue obtained by the above method, and insoluble matter was removed by filter filtration, followed by purification by preparative-HPLC to obtain the desired cyclic peptide. Waters Auto Purification System is used as a purification device, YMC-Actus Triart C18 (inner diameter 20 mm, length 100 mm) or YMC-Actus Triart Phenyl (inner diameter 20 mm, length 100 mm) is used as a column, and methanol-ammonium acetate aqueous solution is used as a mobile phase. (50 mmol/L) or acetonitrile water containing 0.1% formic acid was used. |
[ 68858-20-8 ]
[ 35661-60-0 ]
[ 71989-14-5 ]
[ 103213-32-7 ]
[ 114360-54-2 ]
[ 84000-07-7 ]
[ 109425-55-0 ]
[ 125238-99-5 ]
[ 135673-97-1 ]
[ 169555-95-7 ]
[ 143824-78-6 ]
[ 541-88-8 ]
[ 181951-92-8 ]
[ 199110-64-0 ]
[ 2978162-12-6 ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid With 4-methyl-morpholine; HATU In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: Fmoc-Val-OH; Fmoc-Leu-OH; Fmoc-(tBu)Asp-OH; N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine; N-(9-fluorenylmethoxycarbonyl)-D-leucine; N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-alanine; Fmoc-Orn(Boc)-OH; (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-4Pal-OH; 3-[(S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]indole-1-carboxylic acid tert-butyl ester; Chloroacetic anhydride; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 2 General procedure: Resin-Swelling Procedure: To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (70 mg, 0.050 mmol). The resin was washed (swelled) three times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 3 minutes before the solvent was drained through the frit. Single-Coupling Procedure : To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Double-Coupling Procedure: To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1 hour, then the reaction solution was drained through the frit. The resin was washed successively two times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Chloroacetic Anhydride Coupling: To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 3.0 mL). The mixture was periodically agitated for 3.5 or 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (3.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 2.5 mL, 20 equiv), then N-methylmorpholine (0.8 M in DMF, 2.0 mL, 32 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed twice as follows: for each wash, DMF (3.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minute before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 2.5 mL, 20 equiv), then N-methylmorpholine (0.8 M in DMF, 2.0 mL, 32 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (3.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minute before the solution was drained through the frit. The resulting resin was used directly in the next step. Global Deprotection Method A: Unless noted, all manipulations were performed manually. The procedure of “Global Deprotection Method” describes an experiment performed on a 0.050 mmol scale, where the scale is determined by the amount of Sieber or Rink or Wang or chlorotrityl resin or PL-FMP resin. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. In a 50-mL falcon tube was added the resin and 2.0-5.0 mL of the cleavage cocktail (TFA:TIS:DTT, v/v/w = 94:5:1). The volume of the cleavage cocktail used for each individual linear peptide can be variable. Generally, higher number of protecting groups present in the sidechain of the peptide requires larger volume of the cleavage cocktail. The mixture was shaken at room temperature for 1-2 hours, usually about 1.5 hour. To the suspension was added 35-50 mL of cold diethyl ether. The mixture was vigorously mixed upon which a significant amount of a white solid precipitated. The mixture was centrifuged for 3-5 minutes, then the solution was decanted away from the solids and discarded. The solids were suspended in Et20 (30-40 mL); then the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded. For a final time, the solids were suspended in Et20 (30-40 mL); the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded to afford the crude peptide as a white to off- white solid together with the cleaved resin after drying under a flow of nitrogen and/or under house vacuum. The crude was used at the same day for the cyclization step. Cyclization Method A : Unless noted, all manipulations were performed manually. The procedure of “Cyclization Method A” describes an experiment performed on a 0.05 mmol scale, where the scale is determined by the amount of Sieber or Rink or chlorotrityl or Wang or PL-FMP resin that was used to generate the peptide. This scale is not based on a direct determination of the quantity of peptide used in the procedure. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. The crude peptide solids from the global deprotection were dissolved in DMF (30-45 mL) in the 50-mL centrifuge tube at room temperature, and to the solution was added DIEA (1.0-2.0 mL) and the pH value of the reaction mixture above was 8. The solution was then allowed to shake for several hours or overnight or over 2-3 days at room temperature. The reaction solution was concentrated to dryness on a speedvac or Genevac EZ-2 and the crude residue was then dissolved in DMF or DMF/DMSO (2 mL). After filtration, this solution was subjected to single compound reverse-phase HPLC purification to afford the desired cyclic peptide. | |
| Stage #1: (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid With 4-methyl-morpholine; HATU In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: Fmoc-Val-OH; Fmoc-Leu-OH; Fmoc-(tBu)Asp-OH; N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine; N-(9-fluorenylmethoxycarbonyl)-D-leucine; N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-alanine; Fmoc-Orn(Boc)-OH; (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-4Pal-OH; 3-[(S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]indole-1-carboxylic acid tert-butyl ester; Chloroacetic anhydride; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 2 General procedure: Resin-Swelling Procedure: To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (70 mg, 0.050 mmol). The resin was washed (swelled) three times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 3 minutes before the solvent was drained through the frit. Single-Coupling Procedure : To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Double-Coupling Procedure: To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1 hour, then the reaction solution was drained through the frit. The resin was washed successively two times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Chloroacetic Anhydride Coupling: To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 3.0 mL). The mixture was periodically agitated for 3.5 or 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (3.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 2.5 mL, 20 equiv), then N-methylmorpholine (0.8 M in DMF, 2.0 mL, 32 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed twice as follows: for each wash, DMF (3.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minute before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 2.5 mL, 20 equiv), then N-methylmorpholine (0.8 M in DMF, 2.0 mL, 32 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (3.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minute before the solution was drained through the frit. The resulting resin was used directly in the next step. Global Deprotection Method A: Unless noted, all manipulations were performed manually. The procedure of “Global Deprotection Method” describes an experiment performed on a 0.050 mmol scale, where the scale is determined by the amount of Sieber or Rink or Wang or chlorotrityl resin or PL-FMP resin. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. In a 50-mL falcon tube was added the resin and 2.0-5.0 mL of the cleavage cocktail (TFA:TIS:DTT, v/v/w = 94:5:1). The volume of the cleavage cocktail used for each individual linear peptide can be variable. Generally, higher number of protecting groups present in the sidechain of the peptide requires larger volume of the cleavage cocktail. The mixture was shaken at room temperature for 1-2 hours, usually about 1.5 hour. To the suspension was added 35-50 mL of cold diethyl ether. The mixture was vigorously mixed upon which a significant amount of a white solid precipitated. The mixture was centrifuged for 3-5 minutes, then the solution was decanted away from the solids and discarded. The solids were suspended in Et20 (30-40 mL); then the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded. For a final time, the solids were suspended in Et20 (30-40 mL); the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded to afford the crude peptide as a white to off- white solid together with the cleaved resin after drying under a flow of nitrogen and/or under house vacuum. The crude was used at the same day for the cyclization step. Cyclization Method A : Unless noted, all manipulations were performed manually. The procedure of “Cyclization Method A” describes an experiment performed on a 0.05 mmol scale, where the scale is determined by the amount of Sieber or Rink or chlorotrityl or Wang or PL-FMP resin that was used to generate the peptide. This scale is not based on a direct determination of the quantity of peptide used in the procedure. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. The crude peptide solids from the global deprotection were dissolved in DMF (30-45 mL) in the 50-mL centrifuge tube at room temperature, and to the solution was added DIEA (1.0-2.0 mL) and the pH value of the reaction mixture above was 8. The solution was then allowed to shake for several hours or overnight or over 2-3 days at room temperature. The reaction solution was concentrated to dryness on a speedvac or Genevac EZ-2 and the crude residue was then dissolved in DMF or DMF/DMSO (2 mL). After filtration, this solution was subjected to single compound reverse-phase HPLC purification to afford the desired cyclic peptide. |
[ 29022-11-5 ]
[ 71989-31-6 ]
[ 84000-07-7 ]
[ 86123-10-6 ]
[ CAS Unavailable ]
[ 1374785-50-8 ]
[ 135673-97-1 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: C39H35N4O4Pol With 4-methylpiperidin In N,N-dimethyl-formamide at 90℃; Automated synthesizer; Stage #2: With dicyclohexyl-carbodiimide; ethyl cyanoglyoxylate-2-oxime In N,N-dimethyl-formamide at 75℃; Automated synthesizer; Microwave irradiation; Stage #3: N-(fluoren-9-ylmethoxycarbonyl)glycine; Fmoc-Pro-OH; N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-alanine; Fmoc-D-Phe-OH; N-Fmoc-N-hexyl-glycine; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: (2S)-2-([(9H-fluoren-9-yl)methoxy]carbonyl}amino)-3-(6-hydroxy-1H-indol-3-yl)propanoic acid With N-ethyl-N,N-diisopropylamine; ethyl cyanoglyoxylate-2-oxime; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-D-Asp-OH Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-l-7-AzaTrp-OH With N-ethyl-N,N-diisopropylamine; ethyl cyanoglyoxylate-2-oxime; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-D-Asp-OH Further stages; |
| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Fmoc-6-methoxy-L-Trp With N-ethyl-N,N-diisopropylamine; ethyl cyanoglyoxylate-2-oxime; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Fmoc-D-Asp-OH Further stages; |
[ 159610-93-2 ]
[ 68858-20-8 ]
[ 35661-39-3 ]
[ 71989-14-5 ]
[ 103213-32-7 ]
[ 71989-35-0 ]
[ 114360-54-2 ]
[ 109425-55-0 ]
[ 125238-99-5 ]
[ 135673-97-1 ]
[ 143824-78-6 ]
[ 541-88-8 ]
[ 133174-15-9 ]
[ 181951-92-8 ]
[ 199110-64-0 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| 15.1 mg | Stage #1: N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine With 4-methyl-morpholine; HATU In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: Fmoc-Ser(Me)-OH; Fmoc-Val-OH; Fmoc-(tBu)Asp-OH; N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine; Fmoc-Thr(tBu)-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; Fmoc-Orn(Boc)-OH; (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; 3-[(S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]indole-1-carboxylic acid tert-butyl ester; Chloroacetic anhydride; (S)-2-(((9H-fluoren-9-yl)methoxy)carbonylamino)-5-ureidopentanoic acid; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 2 Resin-Swelling Procedure: To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (140 mg, 0.100 mmol). The resin was washed (swelled) two times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 10 minutes before the solvent was drained through the frit. Single-Coupling Procedure: To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 5.0 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 5.0 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (6.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minutes before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 5.0 mL, 10 equiv), then HATU (0.4 M in DMF, 2.5 mL, 10 equiv), and finally NMM (0.8 M in DMF, 2.5 mL, 20 equiv). The mixture was periodically agitated for 60-120 minutes, then the reaction solution was drained through the frit. The resin was washed successively four times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minute before the solution was drained through the frit. The resulting resin was used directly in the next step. Single-coupling procedure: To the reaction vessel containing the resin from the previous step was added DMF (2.5 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the resin was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added to the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.5 mL, 10 equiv), then HATU (0.4 M in DMF, 1.25 mL, 10 equiv), and finally NMM (0.8 M in DMF, 1.25 mL, 20 equiv). The mixture was periodically agitated for 30-120 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Chloroacetic Anhydride Coupling: [0451] To the reaction vessel containing resin from the previous step was added DMF (3.75 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (3.75 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed once as follows: DMF (6.25 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resin was washed successively four times as follows: for each wash, DCM (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was dried using a nitrogen flow for 10 mins before being used directly in the next step. Final Rinse and Dry Procedure: The resin from the previous step was washed successively six times as follows: for each wash, DCM (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resin was then dried using a nitrogen flow for 10 minutes. The resulting resin was used directly in the next step. Global Deprotection Method A: Unless noted, all manipulations were performed manually. The procedure of “Global Deprotection Method” describes an experiment performed on a 0.050 mmol scale, where the scale is determined by the amount of Sieber or Rink or Wang or chlorotrityl resin or PL-FMP resin. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. In a 50-mL falcon tube was added the resin and 2.0-5.0 mL of the cleavage cocktail (TFA:TIS:DTT, v/v/w = 94:5:1). The volume of the cleavage cocktail used for each individual linear peptide can be variable. Generally, higher number of protecting groups present in the sidechain of the peptide requires larger volume of the cleavage cocktail. The mixture was shaken at room temperature for 1-2 hours, usually about 1.5 hour. To the suspension was added 35-50 mL of cold diethyl ether. The mixture was vigorously mixed upon which a significant amount of a white solid precipitated. The mixture was centrifuged for 3-5 minutes, then the solution was decanted away from the solids and discarded. The solids were suspended in Et2O (30-40 mL); then the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded. For a final time, the solids were suspended in Et2O (30-40 mL); the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded to afford the crude peptide as a white to off- white solid together with the cleaved resin after drying under a flow of nitrogen and/or under house vacuum. The crude was used at the same day for the cyclization step. Cyclization Method A: Unless noted, all manipulations were performed manually. The procedure of “Cyclization Method A” describes an experiment performed on a 0.05 mmol scale, where the scale is determined by the amount of Sieber or Rink or chlorotrityl or Wang or PL-FMP resin that was used to generate the peptide. This scale is not based on a direct determination of the quantity of peptide used in the procedure. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. The crude peptide solids from the globle deprotection were dissolved in DMF (30-45 mL) in the 50-mL centrifuge tube at room temperature, and to the solution was added DIEA (1.0-2.0 mL) and the pH value of the reaction mixure above was 8. The solution was then allowed to shake for several hours or overnight or over 2-3 days at room temperature. The reaction solution was concentrated to dryness on speedvac or genevac EZ-2 and the crude residue was then dissolved in DMF or DMF/DMSO (2 mL). After filtration, this solution was subjected to single compound reverse-phase HPLC purification to afford the desired cyclic peptide. |
| 15.1 mg | Stage #1: N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine With 4-methyl-morpholine; HATU In N,N-dimethyl-formamide Stage #2: With piperidine In N,N-dimethyl-formamide Stage #3: Fmoc-Ser(Me)-OH; Fmoc-Val-OH; Fmoc-(tBu)Asp-OH; N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine; Fmoc-Thr(tBu)-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; Fmoc-Orn(Boc)-OH; (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; 3-[(S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]indole-1-carboxylic acid tert-butyl ester; Chloroacetic anhydride; (S)-2-(((9H-fluoren-9-yl)methoxy)carbonylamino)-5-ureidopentanoic acid; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 2 Resin-Swelling Procedure: To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (140 mg, 0.100 mmol). The resin was washed (swelled) two times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 10 minutes before the solvent was drained through the frit. Single-Coupling Procedure: To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 5.0 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 5.0 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (6.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minutes before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 5.0 mL, 10 equiv), then HATU (0.4 M in DMF, 2.5 mL, 10 equiv), and finally NMM (0.8 M in DMF, 2.5 mL, 20 equiv). The mixture was periodically agitated for 60-120 minutes, then the reaction solution was drained through the frit. The resin was washed successively four times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 1.0 minute before the solution was drained through the frit. The resulting resin was used directly in the next step. Single-coupling procedure: To the reaction vessel containing the resin from the previous step was added DMF (2.5 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the resin was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added to the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.5 mL, 10 equiv), then HATU (0.4 M in DMF, 1.25 mL, 10 equiv), and finally NMM (0.8 M in DMF, 1.25 mL, 20 equiv). The mixture was periodically agitated for 30-120 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Chloroacetic Anhydride Coupling: [0451] To the reaction vessel containing resin from the previous step was added DMF (3.75 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (3.75 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed once as follows: DMF (6.25 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resin was washed successively four times as follows: for each wash, DCM (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was dried using a nitrogen flow for 10 mins before being used directly in the next step. Final Rinse and Dry Procedure: The resin from the previous step was washed successively six times as follows: for each wash, DCM (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resin was then dried using a nitrogen flow for 10 minutes. The resulting resin was used directly in the next step. Global Deprotection Method A: Unless noted, all manipulations were performed manually. The procedure of “Global Deprotection Method” describes an experiment performed on a 0.050 mmol scale, where the scale is determined by the amount of Sieber or Rink or Wang or chlorotrityl resin or PL-FMP resin. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. In a 50-mL falcon tube was added the resin and 2.0-5.0 mL of the cleavage cocktail (TFA:TIS:DTT, v/v/w = 94:5:1). The volume of the cleavage cocktail used for each individual linear peptide can be variable. Generally, higher number of protecting groups present in the sidechain of the peptide requires larger volume of the cleavage cocktail. The mixture was shaken at room temperature for 1-2 hours, usually about 1.5 hour. To the suspension was added 35-50 mL of cold diethyl ether. The mixture was vigorously mixed upon which a significant amount of a white solid precipitated. The mixture was centrifuged for 3-5 minutes, then the solution was decanted away from the solids and discarded. The solids were suspended in Et2O (30-40 mL); then the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded. For a final time, the solids were suspended in Et2O (30-40 mL); the mixture was centrifuged for 3-5 minutes; and the solution was decanted away from the solids and discarded to afford the crude peptide as a white to off- white solid together with the cleaved resin after drying under a flow of nitrogen and/or under house vacuum. The crude was used at the same day for the cyclization step. Cyclization Method A: Unless noted, all manipulations were performed manually. The procedure of “Cyclization Method A” describes an experiment performed on a 0.05 mmol scale, where the scale is determined by the amount of Sieber or Rink or chlorotrityl or Wang or PL-FMP resin that was used to generate the peptide. This scale is not based on a direct determination of the quantity of peptide used in the procedure. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. The crude peptide solids from the globle deprotection were dissolved in DMF (30-45 mL) in the 50-mL centrifuge tube at room temperature, and to the solution was added DIEA (1.0-2.0 mL) and the pH value of the reaction mixure above was 8. The solution was then allowed to shake for several hours or overnight or over 2-3 days at room temperature. The reaction solution was concentrated to dryness on speedvac or genevac EZ-2 and the crude residue was then dissolved in DMF or DMF/DMSO (2 mL). After filtration, this solution was subjected to single compound reverse-phase HPLC purification to afford the desired cyclic peptide. |
[ 68858-20-8 ]
[ 204715-91-3 ]
[ 71989-33-8 ]
[ 71989-14-5 ]
[ 103213-32-7 ]
[ 114360-54-2 ]
[ 84000-07-7 ]
[ 132388-68-2 ]
[ 135673-97-1 ]
[ 143824-78-6 ]
[ 541-88-8 ]
[ 181951-92-8 ]
[ 199110-64-0 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine With 4-methyl-morpholine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #3: Fmoc-Val-OH; Fmoc-4-(Boc-aminomethyl)-phenylalanine; Fmoc-Ser(tBu)-OH; Fmoc-(tBu)Asp-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-alanine; Boc-Asn(Trt)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; 3-[(S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]indole-1-carboxylic acid tert-butyl ester; Chloroacetic anhydride; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 1 Resin-swelling procedure: General procedure: To a 25-mL polypropylene solid-phase reaction vessel was added the resin (0.05 mmol). The resin was washed (swelled) as follows: to the reaction vessel was added DMF (2.0- 3.0 mL, 1-2 times), upon which the mixture was periodically agitated for 10 minutes before the solvent was drained through the frit. Sometimes the resin was washed (swelled) as follows: to the reaction vessel was added CH2Cl2 (3-5 mL, 2 times) and upone which the mixture was periodically agitated for 30 min and before the solvent was drained through the frit. Then DMF (2.0-3.0 mL, 1-6 times), upon which the mixture was periodically agitated for 2-10 minutes before the solvent was drained through the frit. Single-coupling procedure: [0181] To the reaction vessel containing the resin from the previous step was added DMF (2.5-3.75 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the resin was added piperidine:DMF (20:80 v/v, 3.0- 3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.0-3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. Sometimes the deprotection step was performed the third time. The resin was washed successively six times as follows: for each wash, DMF (2.5-3.75 mL) was added to the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0-2.5 mL, 8-10 equiv), then HATU (0.4 M in DMF, 1.0-1.25 mL, 8-10 equiv), and finally NMM (0.8 M in DMF, 1.0-1.25 mL, 20 equiv). The mixture was periodically agitated for 30-120 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5-3.0 mL) was added and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Chloroacetic Anhydride Coupling: [0185] To the reaction vessel containing resin from the previous step was added DMF (3.0-3.75 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 3.0-3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.0-3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (3.0-3.75 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.0-3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed once as follows: DMF (5.0-6.25 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resin was washed successively four times as follows: for each wash, DCM (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was dried using a nitrogen flow for 10 mins before being used directly in the next step. Global Deprotection Method A: [0224] Unless noted, all manipulations were performed manually. The procedure of “Global Deprotection Method” describes an experiment performed on a 0.050 mmol scale, where the scale is determined by the amount of Sieber or Rink or Wang or chlorotrityl resin or PL-FMP resin. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. In a 50-mL falcon tube was added the resin and 2.0 -5.0 mL of the cleavage cocktail (TFA:TIS:DTT, v/v/w = 95:5:1). The volume of the cleavage cocktail used for each individual linear peptide can be variable. Generally, higher number of protecting groups present in the sidechain of the peptide requires larger volume of the cleavage cocktail. The mixture was shaken at room temperature for 1 -2 hours, usually about 1.5 hour. To the suspension was added 35 -50 mL of cold diethyl ether. The mixture was vigorously mixed upon which a significant amount of a white solid precipitated. The mixture was centrifuged for 3 -5 minutes, then the solution was decanted away from the solids and discarded. The solids were suspended in Et2O (30 -40 mL); then the mixture was centrifuged for 3 -5 minutes; and the solution was decanted away from the solids and discarded. For a final time, the solids were suspended in Et2O (30 -40 mL); the mixture was centrifuged for 3 -5 minutes; and the solution was decanted away from the solids and discarded to afford the crude peptide as a white to off- white solid together with the cleaved resin after drying under a flow of nitrogen and/or under house vacuum. The crude was used at the same day for the cyclization step. | |
| Stage #1: N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine With 4-methyl-morpholine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #3: Fmoc-Val-OH; Fmoc-4-(Boc-aminomethyl)-phenylalanine; Fmoc-Ser(tBu)-OH; Fmoc-(tBu)Asp-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; N-(9-fluorenylmethoxycarbonyl)-N-methyl-L-alanine; Boc-Asn(Trt)-OH; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; 3-[(S)-2-carboxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)ethyl]indole-1-carboxylic acid tert-butyl ester; Chloroacetic anhydride; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 1 Resin-swelling procedure: General procedure: To a 25-mL polypropylene solid-phase reaction vessel was added the resin (0.05 mmol). The resin was washed (swelled) as follows: to the reaction vessel was added DMF (2.0- 3.0 mL, 1-2 times), upon which the mixture was periodically agitated for 10 minutes before the solvent was drained through the frit. Sometimes the resin was washed (swelled) as follows: to the reaction vessel was added CH2Cl2 (3-5 mL, 2 times) and upone which the mixture was periodically agitated for 30 min and before the solvent was drained through the frit. Then DMF (2.0-3.0 mL, 1-6 times), upon which the mixture was periodically agitated for 2-10 minutes before the solvent was drained through the frit. Single-coupling procedure: [0181] To the reaction vessel containing the resin from the previous step was added DMF (2.5-3.75 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the resin was added piperidine:DMF (20:80 v/v, 3.0- 3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.0-3.75 mL). The mixture was periodically agitated for 5.0 minutes and then the solution was drained through the frit. Sometimes the deprotection step was performed the third time. The resin was washed successively six times as follows: for each wash, DMF (2.5-3.75 mL) was added to the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0-2.5 mL, 8-10 equiv), then HATU (0.4 M in DMF, 1.0-1.25 mL, 8-10 equiv), and finally NMM (0.8 M in DMF, 1.0-1.25 mL, 20 equiv). The mixture was periodically agitated for 30-120 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5-3.0 mL) was added and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Chloroacetic Anhydride Coupling: [0185] To the reaction vessel containing resin from the previous step was added DMF (3.0-3.75 mL) three times, upon which the mixture was agitated for 30 seconds before the solvent was drained through the frit each time. To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 3.0-3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 3.0-3.75 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (3.0-3.75 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.0-3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed once as follows: DMF (5.0-6.25 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the chloroacetic anhydride solution (0.4 M in DMF, 3.75 mL, 30 equiv), then NMM (0.8 M in DMF, 2.5 mL, 40 equiv). The mixture was periodically agitated for 15 minutes, then the reaction solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resin was washed successively four times as follows: for each wash, DCM (2.5 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was dried using a nitrogen flow for 10 mins before being used directly in the next step. Global Deprotection Method A: [0224] Unless noted, all manipulations were performed manually. The procedure of “Global Deprotection Method” describes an experiment performed on a 0.050 mmol scale, where the scale is determined by the amount of Sieber or Rink or Wang or chlorotrityl resin or PL-FMP resin. The procedure can be scaled beyond 0.05 mmol scale by adjusting the described volumes by the multiple of the scale. In a 50-mL falcon tube was added the resin and 2.0 -5.0 mL of the cleavage cocktail (TFA:TIS:DTT, v/v/w = 95:5:1). The volume of the cleavage cocktail used for each individual linear peptide can be variable. Generally, higher number of protecting groups present in the sidechain of the peptide requires larger volume of the cleavage cocktail. The mixture was shaken at room temperature for 1 -2 hours, usually about 1.5 hour. To the suspension was added 35 -50 mL of cold diethyl ether. The mixture was vigorously mixed upon which a significant amount of a white solid precipitated. The mixture was centrifuged for 3 -5 minutes, then the solution was decanted away from the solids and discarded. The solids were suspended in Et2O (30 -40 mL); then the mixture was centrifuged for 3 -5 minutes; and the solution was decanted away from the solids and discarded. For a final time, the solids were suspended in Et2O (30 -40 mL); the mixture was centrifuged for 3 -5 minutes; and the solution was decanted away from the solids and discarded to afford the crude peptide as a white to off- white solid together with the cleaved resin after drying under a flow of nitrogen and/or under house vacuum. The crude was used at the same day for the cyclization step. |
[ 851392-68-2 ]
[ 211637-74-0 ]
[ CAS Unavailable ]
[ 68858-20-8 ]
[ 71989-14-5 ]
[ 71989-38-3 ]
[ 103213-32-7 ]
[ 71989-35-0 ]
[ 114360-54-2 ]
[ 109425-55-0 ]
[ 125238-99-5 ]
[ 135673-97-1 ]
[ 541-88-8 ]
[ 181951-92-8 ]
[ 199110-64-0 ]
[ CAS Unavailable ]| Yield | Reaction Conditions | Operation in experiment |
|---|---|---|
| Stage #1: Rink amide resin; N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine With 4-methyl-morpholine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #3: Fmoc-Dab(Mtt)-OH; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(m-tolyl)propanoic acid; Fmoc-Val-OH; Fmoc-(tBu)Asp-OH; Fmoc-Tyr(tBu)-OH; Fmoc-Thr(tBu)-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; Fmoc-Orn(Boc)-OH; (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Chloroacetic anhydride; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 1 Resin-Swelling Procedure: General procedure: To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (70 mg, 0.050 mmol). The resin was washed (swelled) three times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 3 minutes before the solvent was drained through the frit. Single-Coupling Procedure: [0194] To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Resin-Swelling Procedure: [0193] To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (70 mg, 0.050 mmol). The resin was washed (swelled) three times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 3 minutes before the solvent was drained through the frit. Single-Coupling Procedure: [0194] To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. | |
| Stage #1: Rink amide resin; N-(9-fluorenylmethoxycarbonyl)-S-trityl-L-cysteine With 4-methyl-morpholine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #2: With piperidine In N,N-dimethyl-formamide Inert atmosphere; Automated synthesizer; Stage #3: Fmoc-Dab(Mtt)-OH; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(m-tolyl)propanoic acid; Fmoc-Val-OH; Fmoc-(tBu)Asp-OH; Fmoc-Tyr(tBu)-OH; Fmoc-Thr(tBu)-OH; N-(9-fluorenylmethoxycarbonyl)-D-leucine; Fmoc-Orn(Boc)-OH; (S)-4-tert-butoxycarbonylamino-2-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid; (S)-3-cyclohexyl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid; Chloroacetic anhydride; (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(2-(tert-butoxy)-2-oxoethoxy)phenyl)propanoic acid; (S)-3-biphenyl-4-yl-2-(9H-fluoren-9-ylmethoxycarbonylamino)propionic acid Further stages; | 1 Resin-Swelling Procedure: General procedure: To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (70 mg, 0.050 mmol). The resin was washed (swelled) three times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 3 minutes before the solvent was drained through the frit. Single-Coupling Procedure: [0194] To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. Resin-Swelling Procedure: [0193] To a 45-mL polypropylene solid-phase reaction vessel was added Sieber amide resin (70 mg, 0.050 mmol). The resin was washed (swelled) three times as follows: to the reaction vessel was added DMF (5.0 mL) through the top of the vessel “DMF top wash” upon which the mixture was periodically agitated for 3 minutes before the solvent was drained through the frit. Single-Coupling Procedure: [0194] To the reaction vessel containing the resin from the previous step was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. To the reaction vessel was added piperidine:DMF (20:80 v/v, 4.0 mL). The mixture was periodically agitated for 5 minutes and then the solution was drained through the frit. The resin was washed successively six times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. To the reaction vessel was added the amino acid (0.2 M in DMF, 2.0 mL, 8 equiv), then HATU (0.4 M in DMF, 1.0 mL, 8 equiv), and finally NMM (0.8 M in DMF, 1.0 mL, 16 equiv). The mixture was periodically agitated for 1-2 hours, then the reaction solution was drained through the frit. The resin was washed successively five times as follows: for each wash, DMF (5.0 mL) was added through the top of the vessel and the resulting mixture was periodically agitated for 30 seconds before the solution was drained through the frit. The resulting resin was used directly in the next step. |

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