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CAS No. : | 26462-22-6 | MDL No. : | MFCD00190933 |
Formula : | C12H24N2O3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | JWBXCSQZLLIOCI-GUBZILKMSA-N |
M.W : | 244.33 | Pubchem ID : | 7019083 |
Synonyms : |
|
Num. heavy atoms : | 17 |
Num. arom. heavy atoms : | 0 |
Fraction Csp3 : | 0.83 |
Num. rotatable bonds : | 8 |
Num. H-bond acceptors : | 4.0 |
Num. H-bond donors : | 3.0 |
Molar Refractivity : | 67.28 |
TPSA : | 92.42 Ų |
GI absorption : | High |
BBB permeant : | No |
P-gp substrate : | No |
CYP1A2 inhibitor : | No |
CYP2C19 inhibitor : | No |
CYP2C9 inhibitor : | No |
CYP2D6 inhibitor : | No |
CYP3A4 inhibitor : | No |
Log Kp (skin permeation) : | -9.0 cm/s |
Log Po/w (iLOGP) : | 1.38 |
Log Po/w (XLOGP3) : | -1.71 |
Log Po/w (WLOGP) : | 0.98 |
Log Po/w (MLOGP) : | 0.89 |
Log Po/w (SILICOS-IT) : | 0.92 |
Consensus Log Po/w : | 0.49 |
Lipinski : | 0.0 |
Ghose : | None |
Veber : | 0.0 |
Egan : | 0.0 |
Muegge : | 0.0 |
Bioavailability Score : | 0.55 |
Log S (ESOL) : | 0.25 |
Solubility : | 435.0 mg/ml ; 1.78 mol/l |
Class : | Highly soluble |
Log S (Ali) : | 0.28 |
Solubility : | 468.0 mg/ml ; 1.92 mol/l |
Class : | Highly soluble |
Log S (SILICOS-IT) : | -1.45 |
Solubility : | 8.59 mg/ml ; 0.0352 mol/l |
Class : | Soluble |
PAINS : | 0.0 alert |
Brenk : | 0.0 alert |
Leadlikeness : | 2.0 |
Synthetic accessibility : | 2.87 |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P280-P301+P312-P302+P352-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* 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 |
---|---|---|
With hydrogen; acetic acid In methanol; water |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: (i) ClCO2Et, Et3N, CHCl3, (ii) /BRN= 1722045/ 2: aq. NaOH / acetone 3: H2, AcOH / Pd / methanol; H2O | ||
Multi-step reaction with 4 steps 1: dicyclohexyl-carbodiimide / tetrahydrofuran / 20 h / 0 - 20 °C 2: sodium hydroxide / water; ethanol / 10 h 3: hydrogenchloride / 1,4-dioxane / 5 h 4: triethylamine / methanol; dichloromethane / 2 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: (i) ClCO2Et, Et3N, CHCl3, (ii) /BRN= 1722045/ 2: aq. NaOH / acetone 3: H2, AcOH / Pd / methanol; H2O |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: aq. NaOH / acetone 2: H2, AcOH / Pd / methanol; H2O |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Stage #1: Fmoc-Leu-OH With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 0.5h; Stage #2: With N-ethyl-N,N-diisopropylamine In methanol; dichloromethane Stage #3: Fmoc-Ile-OH Further stages; | 3.12.1. Synthesis of Dipeptides General procedure: Synthesis protocol for automated solid phase peptide synthesis: Automated solid-phase peptide synthesis was performed in 50 μmol scale. Loading: To a 10 mL syringe reactor with frit and cap were added 1 g of tritylchloride (TCP) resin (1.56 mmol/g) and 7 mL dry DCM. The resin was pre-swollen for 10 min and the solvent was removed by evaporation in vacuum. A mixture of the amino acid (0.6 mmol) and 3 equivalents of DIPEA dissolved in 5 mL dry DCM was added to the resin. The syringe was agitated for 30 min at room temperature. The solution was removed and the resin was washed (2 × 5 mL DMF, 2 × 5 mL DCM). Capping of non-reacted functional groups of the resin was performed with DCM, methanol and DIPEA 80:15:5 (2 × 10 mL, 10 min). After washing (5 × 5 mL DMF), Fmoc-removal was achieved with DMF/piperidine (4:1, 5 mL, 1 × 2 min, 1 × 20 min). After final washing (2 × 5 mL DMF, 1 × 5 mL methanol, 3 × 5 mL DCM), the resin was dried in vacuo. Coupling of Fmoc/tBu-protected amino acids: To 100 mg of the resin (~0.5 mmol/g), a 0.15 M solution of the amino acid in DMF (3 eq relative to resin loading) was added. After addition of a 0.3 M solution of DIPEA in DMF (3 eq) and a 0.15 M solution of HATU in DMF (3 eq), the reaction solution was mixed for 60 min. A second coupling was performed for 60 min. Finally, the resin was washed with DMF (6 × 2.5 mL). Fmoc removal: DMF/piperidine (4:1, 2.5 mL) was added to the resin and mixed for 2.5 min. The procedure was repeated 4 times. The resin was washed with DMF (5 × 2.5 mL), then DCM (5 × 2 mL). Global deprotection: The resin was transferred to a 5 mL syringe with frit and cap. After addition of the cleavage cocktail (TFA, H2O 90:10), the syringe was shaken for 2 h. The cleaving solution was collected and the resin was washed with MeOH (2 × 3 mL). The combined fractions were concentrated in vacuo. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: acetyl chloride / 3 h / 21 °C 2: dichloromethane / 0.25 h / 21 - 110 °C |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With acetyl chloride at 21℃; for 3h; | 3.11.2. Dipeptide Analysis as N-Trifluoroacetyl Methyl Dipeptide Derivatives General procedure: To the samples a total volume of 360 μL acetyl chloride:methanol (v:v, 60:300 μL) were added in Reacti-Vials sealed and derivatized for 3 h at room temperature (21 °C). The excess of reaction mixture was evaporated in a gentle steam of nitrogen. To the dry residues 50 μL trifluoroacetic anhydride (TFAA) and 100 μL dichloromethane (DCM) were added and derivatized for 10 min at room temperature (21 °C) and then 5 min at 110 °C. The samples were cooled down to room temperature (21 °C) and again dried in a steam of nitrogen and finally dissolved in 100 μL DCM. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 2 steps 1: dicyclohexyl-carbodiimide / tetrahydrofuran / 36 h / 0 °C 2: sodium hydroxide / water; ethanol / 30 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
67% | With sodium hydroxide In ethanol; water for 30h; | L-Leucyl-L-isoleucine (5). b General procedure: To a solution of 10.63 g (30 mmol) of N-trifluoroacetyl-L-leucyl-L-isoleucine methyl ester in 70 mL of ethanol was added a solution of 2.6 g (65 mmol) of sodium hydroxide in 50 mL of water. After stirring for 30 h to the reaction mixture was added dropwise 3.99 g (35 mmol) of trifluoroacetic acid, the mixture was stirred for 30 min, filtered, the solvent was removed at a reduced pressure. The obtained residue was diluted with 150 mL of acetone, the formed mixture was vigorously stirred for 2 h, the precipitate was filtered off and washed in succession with acetone, ethyl ether, and dried in a vacuum. L-Isoleucyl-L-leucine (6). From 10.63 g (30 mmol) of N-trifluoroacetyl-L-isoleucyl-L-leucine methyl ester, 2.6 g (65 mmol) of sodium hydroxide, and 3.99 g (35 mmol) of trifluoroacetic acid we obtained 4.91 g (67%) of compound 6, mp 288-290 °C, [α]D20 -10.7° (c 1, 1 M NaOH). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
7.04 g | With triethylamine In methanol; dichloromethane for 2h; | L-Leucyl-L-isoleucine (5). a General procedure: To a solution of 17.22 g (50 mmol) of tert-butoxycarbonyl-L-leucyl-L-isoleucine in 100 mL of dioxane was added 20 mL of 5.3 N solution of hydrogen chloride in dioxane. The reaction mixture was vigorously stirred for 5 h. the formed precipitate was filtered off, washed several times with ethyl ether, and dried in a vacuum. 11.79 g of substance obtained was dissolved in 50 mL of methanol. To this solution was added at vigorous stirring a solution of 4.24 g (42 mmol) of triethylamine in 200 mL of dichloromethane. The reaction mixture was stirred for 2 h, the separated precipitate was washed with dichloromethane and dried in a vacuum. L-Isoleucyl-L-leucine (6). a. Compound 6 was similarly prepared from 13.78 g (40 mmol) of tert-butoxycarbonyl-L-isoleucyl-L-leucine, 20 mL of 5 N solution of hydrogen chloride in dioxane, and 3.54 g (35 mmol) of triethylamine. Yield 7.04 g (72%), mp 289-290 °, [α]D20 -10.9° (c 1, 1 M. NaOH) [α]D18-11° (c 1, 1 M. NaOH) [2]. 1H NMR spectrum (D2O), δ, ppm: 0.65-0.72 m (9H, 3CH3), 0.82 d (3H, CH3, J 5.6 Hz), 0.98-1.05 m (1H, CH), 1.30-1.49 m (4H, 2CH2), 1.73-1.81 m (1H, CH), 3.66 d (1H, CH, J 4.8 Hz), 3.96-3.99 m (1H, CH). 13C NMR spectrum (D2O), δ, ppm: 10.47, 14.15, 20.96, 22.33, 23.86, 24.59, 36.40, 40.50, 54.40, 57.80, 168.63, 179.21. Found, %: C 59.22; H 10.14; N 11.21. C12H24N2O3. Calculated, %: C 58.99; H 9.90; N 11.47. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 4 steps 1: dicyclohexyl-carbodiimide / tetrahydrofuran / 20 h / 0 - 20 °C 2: sodium hydroxide / water; ethanol / 10 h 3: hydrogenchloride / 1,4-dioxane / 5 h 4: triethylamine / methanol; dichloromethane / 2 h |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Multi-step reaction with 3 steps 1: sodium hydroxide / water; ethanol / 10 h 2: hydrogenchloride / 1,4-dioxane / 5 h 3: triethylamine / methanol; dichloromethane / 2 h |