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The BI-3802 was designed by Boehringer Ingelheim and could be obtained free of charge through the Boehringer Ingelheim open innovation portal opnMe.com, associated with its negative control.
Fmoc-Cha-OH is a protected cyclohexylalanine derivative with the amino group protected by 9-fluorenylmethoxycarbonyl (Fmoc), suitable for peptide synthesis.
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Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
Search for reports by entering the product batch number.
Batch number can be found on the product's label following the word 'Batch'.
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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 |
MDL No. : | MFCD00065614 |
InChI Key : | HIJAUEZBPWTKIV-QFIPXVFZSA-N |
Pubchem ID : | 978326 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
* 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 |
---|---|---|
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). |
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 |
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. |
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. |
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. |
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 |
---|---|---|
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 |
---|---|---|
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. |