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Type | HazMat fee for 500 gram (Estimated) |
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Structure of 117810-52-3
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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.
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CAS No. : | 117810-52-3 |
Formula : | C7H12N2O |
M.W : | 140.18 |
SMILES Code : | O=C1CCC2CNCCN21 |
MDL No. : | MFCD08752614 |
InChI Key : | BHFXPKPIPBNKFI-UHFFFAOYSA-N |
Pubchem ID : | 10820612 |
GHS Pictogram: |
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Signal Word: | Danger |
Hazard Statements: | H314 |
Precautionary Statements: | P280-P305+P351+P338-P310 |
Class: | 8 |
UN#: | 3259 |
Packing Group: | Ⅲ |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 0 |
Fraction Csp3 | 0.86 |
Num. rotatable bonds | 0 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 45.26 |
TPSA ? Topological Polar Surface Area: Calculated from |
32.34 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.44 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
-0.8 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
-1.18 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
-0.05 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.54 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
-0.01 |
Log S (ESOL):? ESOL: Topological method implemented from |
-0.21 |
Solubility | 87.4 mg/ml ; 0.624 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
0.6 |
Solubility | 558.0 mg/ml ; 3.98 mol/l |
Class? Solubility class: Log S scale |
Highly soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-0.84 |
Solubility | 20.4 mg/ml ; 0.145 mol/l |
Class? Solubility class: Log S scale |
Soluble |
GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg |
Low |
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) |
No |
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) |
No |
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) |
No |
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) |
No |
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from |
-7.72 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 |
0.55 |
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<1.0 |
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) |
1.74 |
* 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 |
---|---|---|
97% | at 190℃; for 2h; | Tert-b tyl 3-(piperazin-2-yl)propanoate (3.4 g, 0.01585 mol, 1.0 eq) in a round bottomed flask was heated at 190C for 2 h while monitoring by TLC. After completion of starting material, the mixture was cooled and washed with hexane to obtain hexahydropyrrolo[l,2-fl]pyrazin-6(2H)-one (2.2 g, 97%) as pale brown solid. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A 8 ml sealed vial was charged with 100 mg (0.161 mmoles) of 2-[3,5- bis(trifluoromethyl)phenyl]-Λ/-[6-chloro-4-(2-methylphenyl)-3-pyridinyl]-Λ/,2- dimethylpropanamide (WO 2005/002577), 67 mg (0.483 mmol) of hexahydropyrrolo[1 ,2- a]pyrazin-6(2H)-one (WO 2003/066635), 44.5 mg (0.322 mmol) of potassium carbonate; EPO <DP n="119"/>the reagents were dissolved in 0.8ml of DMSO. The reaction mixture was heated at 1800C for 36-48hrs and then added to a saturated NH4CI solution and back extracted with DCM; the crude material was purified on SPE cartridge (Silica) eluting with a gradient from cyclohexane/ethyl acetate 9:1 , to ethyl acetate 100% and affording 45 mg of the title compound as pale yellow solid. MS (ES/+): 619 [M+H]+NMR (DMSOd6): δ (ppm) 8.07-8.00 (m, 1 H); 7.81-7.77 (m, 1 H); 7.73-7.63 (m, 2H); 7.37- 7.21 (m, 4H); 6.61-6.56 (m, 1 H); 4.68-4.54 (m, 1 H); 4.33-4.19 (m, 1 H); 4.18-4.08 (d, 1 H); 3.78-3.67 (m, 1 H); 3.04-2.85 (m, 2H); 2.69-2.54 (t, 1 H); 2.53-2.42 9dd, 1 H); 2.42-2.33 (m, 3H); 2.33-2.23 (m, 1 H); 2.21-2.10 (m, 3H); 1.78.-1.66 (m, 1 H); 1.57-1.48 (m, 3H); 1.42-1.32 (m, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A 8 ml sealed vial was charged with 100 mg (0.187 mmoles) of 2-[3,5- bis(trifluoromethyl)phenyl]-Λ/-[6-chloro-4-(4-fluoro-2-methylphenyl)-3-pyridinyl]-Λ/,2- dimethylpropanamide (WO 2005/002577), 78.6 mg (0.561 mmol) of hexahydropyrrolo[1 ,2- a]pyrazin-6(2H)-one (WO 2003/066635), 52 mg (0.374 mmol) of potassium carbonate; the reagents were dissolved in 0.8ml of DMSO. The reaction mixture was heated at 1800C for 36-48hrs and then added to a saturated NH4CI solution and back extracted with dichloromethane; the crude material was purified on SPE cartridge (Silica) eluting with a gradient from cyclohexane/ethyl acetate 9:1 , to ethyl acetate 100% and affording 71 mg of the title compound as pale yellow solid.MS (ES/+): 637 [M+H]+ EPO <DP n="118"/>NMR (DMSO-Cl6): δ (ppm) 8.01 (s, 1 H); 7.78 (s, 1 H); 7.65 (s, 2H); 7.05-6.87 (m, 3H); 6.52 (S, 1 H); 4.67-4.52 (m, 1 H); 4.32-4.19 (m, 1 H); 4.14-4.10 (d, 1 H); 3.77-3.64 (m, 1 H); 3.02- 2.84 (m, 2H); 2.61 (t, 1 H); 2.48-2.44 (dd, 2H); 2.41-2.33 (s, 3H); 2.30-2.22 (m, 1 H); 2.13 (s, 3H); 1.79-1.65 (m, 1 H); 1.53 (s, 3H); 1.38 (s, 3H) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
25% | With triethylamine; In dichloromethane; | To a stirred solution of (3SR,4RS)-3-[(RS)-1-(5-chloro-pyridin-2-yloxy)-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidine-1-carbonyl chloride (22 mg, 0.051 mmol) in CH2Cl2 (3 mL) were added Et3N (0.015 ml, 0.11 mmol) and hexahydro-pyrrolo[1,2-a]pyrazin-6-one (commercially available) (9 mg, 0.064 mmol). Stirring was continued overnight, and the reaction mixture was concentrated under vacuo and directly purified by flash chromatography (SiO2, EtOAc) to yield 7 mg (25%) the title compound as light yellow oil. ES-MS m/e: 539.2 (M+H+). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
A solution of ethyl 1,4-dibenzyl-2-piperazine-3-acrylate (2.84 g) in abs. EtOH (40 mL) was hydrogenated over Pd/C 10% (1.42 g) at 3.5 atm. for 2 days. After filtration, the solution was concentrated to nearly 30 mL and heated to 70 C. for 16 hours until complete cyclization occurred. The solution was concentrated in vacuo and the residue was purified by flash chromatography (DCM/MeOH 7:3) to give the title compound (820 mg) as a pale yellow oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium carbonate; In N,N-dimethyl-formamide; at 20 - 60℃; | Intermediate of Formula VI; N-(5-Bromo-pyridin-2-yl)-2-(6-oxo-hexahydro-pyrrolo[ 1 ,2-a]pyrazin-2-yl)-acetamide: N-(5- Bromo-2-pyridinyl)-2-chloroacetamide (253mg, l.Olmmol) was dissolved in DMF (5mL) at room temperature. Hexahydro-pyrrolo[l,2-a]pyrazin-6-one (142mg, l.Olmmol) (Christensen et. al. WO2008046882) was added followed by potassium carbonate (350mg, 2.53mmol). The reaction mixture was stirred overnight at 6O0C. The reaction mixture was cooled to room temperature, diluted with ethyl acetate (25mL), and transferred to a separatory funnel. The reaction mixture was washed with water (3 X 25mL). The organic phase was dried over magnesium sulfate, filtered through a pad of silica, then concentrated. The product was isolated by preparative thin layer chromatography eluting with 98/2 methylene chloride/methanol to afford 95mg of the title compound. 1H NMR (400 MHz, CDCl3) δ 9.47 (br s, IH), 8.34 (d, J = 2.3 Hz, IH), 8.18 (d, J = 9.0 Hz, IH), 7.82 (dd, J = 9.0 Hz, J = 2.3 Hz, IH), 4.13-4.05 (m, 2H), 3.83-3.74 (m, IH), 3.22 (dd, J = 15.4 Hz, J = 4.8 Hz, 2H), 3.07-2.96 (m, 2H), 2.91-2.86 (m, 2H), 2.48-2.39 (m, 2H), 2.33-2.17 (m, 2H), 1.68-1.57 (m, IH). ESI-MS m/z: 354.9 (M + H)+. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In ethanol; at 80 - 85℃; for 24h; | PREPARATION 27 (±)-2-[8-(2-chlorophenyl)-9-(2-hydroxyethyl)-2-methyl-purin-6-yl]-1,3,4,7,8,8a-hexahydropyrrolo[1,2-a]pyrazin-6-one Charge a 500 mL three necked round bottomed flask with 2-[6-chloro-8-(2-chlorophenyl)-2-methyl-purin-9-yl]ethanol (13.3 g, 0.0412 mmol) and ethanol (200 mL), followed by <strong>[117810-52-3]2,3,4,7,8,8a-hexahydro-1H-pyrrolo[1,2-a]pyrazin-6-one</strong> (6.365 g, 0.0453 mol) and triethylamine (14.8 mL, 3.5 eq). Heat the mixture to 80-85 C. for 24 h. Cool the reaction to room temperature and concentrate under vacuum to give a yellow solid as the crude product. Purify the crude material by column chromatography, using 400 g of silica gel and eluting with dichloromethane/methanol (50:1), to give the product as a yellow solid (13.3 g). 1H NMR (dmso-d6): δ 7.55-7.41 (m, 4H); 5.72 (bs, 2H); 4.16-3.92 (m, 3H); 3.71 (s, 2H); 3.71-3.68 (m, 1H); 3.02-2.93 (m, 2H); 2.74 (m, 1H); 2.70 (s, 3H); 2.44 (m, 2H); 2.32-2.29 (m, 1H); 1.76-1.69 (m, 1H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In dichloromethane; at 0 - 20℃; | Synthesis of Example 1212-1A mixture of 3-nitrosalicyclic acid (5 g, 27.30 mmol), thionyl chloride (25 mL, 137.85 mmol) and N,N-dimethylformamide (two drops) is stirred at 70 C for 1 h. The solvent is evaporated under vacuum to leave a crude residue. A portion of this (2 g) is dissolved in dichloromethane (7 mL) and the solution cooled to 0 C. Triethylamine (1.5 mL, 10.70 mmol) is added followed by hexahydro- pyrrolo[l,2-a]pyrazin-6-one (500 mg, 3.57 mmol). The mixture is allowed to warm to room temperature and stirred overnight. The solvent is removed under reduced pressure and the crude residue purified by flash chromatography (Silica Gel, gradient: cyclohexane/ethyl acetate from 100:0 to 0: 100) to give compound 12-1.Yield: 900 mgES mass spectrum: [M+H]+ = 306Retention time: 0.74 min (HPLC Method 4) | |
With triethylamine; In dichloromethane; at 0 - 20℃; | A mixture of 3-nitrosalicyclic acid (5 g, 27.30 mmol), thionyl chloride (25 mL, 137.85 mmol) and N,N-dimethylformamide (two drops) is stirred at 70 C. for 1 h. The solvent is evaporated under vacuum to leave a crude residue. A portion of this (2 g) is dissolved in dichloromethane (7 mL) and the solution cooled to 0 C. Triethylamine (1.5 mL, 10.70 mmol) is added followed by hexahydro-pyrrolo[1,2-a]pyrazin-6-one (500 mg, 3.57 mmol). The mixture is allowed to warm to room temperature and stirred overnight. The solvent is removed under reduced pressure and the crude residue purified by flash chromatography (Silica Gel, gradient: cyclohexane/ethyl acetate from 100:0 to 0:100) to give compound 12-1.Yield: 900 mgES mass spectrum: [M+H]+=306is Retention time: 0.74 min (HPLC Method 4) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | With potassium carbonate; In N,N-dimethyl-formamide; at 110℃; for 3h; | To a solution of hexahydropyrrolo[l,2-a]pyrazin-6(2H)-one (2.2 g, 0.01571 mol, 1.0 eq) in DMF (20 mL) in a vial, l-fluoro-4-nitrobenzene (2.2 g, 0.01571 mol, 1.0 eq) and K2CO3 (6.5 g, 0.04714 mol, 3.0 eq) were added. The vial was sealed and the mixture heated at 110C for 3 h while monitoring by TLC. After completion of the starting material, the mixture was poured into ice water (50 mL) and extracted with DCM (3 x 150 mL). The organic layer was washed with water (50 mL), brine (50 mL), dried over anhydrous sodium sulphate and concentrated. The resulting residue was purified by column chromatography on silica gel (100-200) using methanol in DCM as the eluent. The product eluted at 4% methanol in DCM and the concentration of the fractions afforded 2-(4-nitrophenyl)hexahydropyrrolo[l,2-a]pyrazin-6(2H)-one (4.02 g, 98%) as pale yellow solid. |
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