Structure of 36476-86-5
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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. : | 36476-86-5 |
Formula : | C17H16N2 |
M.W : | 248.32 |
SMILES Code : | N#CC1CN(C(C2=CC=CC=C2)C3=CC=CC=C3)C1 |
MDL No. : | MFCD00158910 |
InChI Key : | IXMOEAHDRKNAAG-UHFFFAOYSA-N |
Pubchem ID : | 2779290 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H302-H312-H315-H319-H332-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338-P304+P340-P405-P501 |
Num. heavy atoms | 19 |
Num. arom. heavy atoms | 12 |
Fraction Csp3 | 0.24 |
Num. rotatable bonds | 3 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 79.57 |
TPSA ? Topological Polar Surface Area: Calculated from |
27.03 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.65 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.95 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.53 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
2.69 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
3.28 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
2.82 |
Log S (ESOL):? ESOL: Topological method implemented from |
-3.51 |
Solubility | 0.0772 mg/ml ; 0.000311 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-3.18 |
Solubility | 0.164 mg/ml ; 0.000661 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-4.99 |
Solubility | 0.00254 mg/ml ; 0.0000102 mol/l |
Class? Solubility class: Log S scale |
Moderately 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 |
Yes |
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) |
Yes |
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 |
-5.72 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 |
0.0 |
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) |
2.4 |
* 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 |
---|---|---|
71.7% | Potassium hydroxide (6.48 g) and water (3.25 ml) were added to a solution of 1-benzhydryl-3-cyanoazetidine (5.43 g) in methoxyethanol (54 ml), followed by stirring at 100 C. for 4 hours. The reaction mixture was allowed to cool down to room temperature, and poured into ice. After pH of the mixture was adjusted to 5 with 1N hydrochloric acid, sodium chloride was added thereto. This was extracted with a mixed solvent of ethyl acetate and tetrahydrofuran. The organic layer was washed with brine, and dried over anhydrous sodium sulfate. The dried organic layer was concentrated under reduced pressure to give a crude product of the title compound as pale yellow crystals. The crystals were suspended by the addition of diethyl ether (15 ml). The crystals were collected by filtration and washed with diethyl ether. This was dried under aeration to give the title compound (4.20 g, 71.7%) as pale yellow crystals.1H-NMR Spectrum (CDCl3) δ (ppm): 3.00-3.90 (5H, m), 4.95 (1H, s), 7.25-7.28 (2H, m), 7.33 (4H, m), 7.53 (4H, m). | |
71.7% | (Reference Example F-3) 1-Benzhydrylazetidine-3-carboxylic acid To a solution of 1-benzhydryl-3-cyanoazetidine (5.43 g) in methoxyethanol (54 ml) were added potassium hydroxide (6.48 g) and water (3.25 ml), followed by stirring at 100 C for 4 hr. The reaction mixture was allowed to cool down to room temperature. The reaction mixture was poured into ice. After adjusting this to pH 5 with 1N hydrochloric acid, sodium chloride was added thereto. This was extracted with a mixed solvent of ethyl acetate and tetrahydrofuran. The organic layer was washed with brine, and dried over anhydrous sodium sulfate. The organic layer after drying was concentrated under reduced pressure to provide a crude product of the titled compound as pale yellow crystals. The crystals were suspended by addition of diethyl ether (15 ml). The crystals were collected by filtration and washed with diethyl ether. This was dried under aeration to provide the titled compound as pale yellow crystals (4.20 g, 71.7 %). 1H-NMR Spectrum (CDCl3) δ (ppm): 3.00-3.90 (5H, m), 4.95 (1H, s), 7.25-7.28 (2H, m), 7.33 (4H, m), 7.53 (4H, m). | |
71% | A suspension of 1-benzhydryl-azetidine-3-carbonitrile (2.09 g, 8. 42 mmol) in concentrated hydrochloric acid (12 M, 15 mL) was heated at reflux for 30 minutes. The resulting solution was cooled to0 C, and 6 M sodium hydroxide was added until the mixture reached a pH of about 7. The aqueous mixture was <Desc/Clms Page number 112>then extracted with dichloromethane (3 x 150 mL) and dichloromethane: methanol (10: 1,3 x 150 mL). The combined organic layers were dried, filtered, and concentrated under reduced pressure to give the title compound (1.60 g, 71 % yield). MS (APCI): m/z 268(M+H)'. |
71% | A suspension ofl-benzhydryl-azetidine-3-carbonitrile (2.09 g, 8.42 mmol) in concentrated hydrochloric acid (12 M, 15 mL) was heated at reflux for 30 minutes. The resulting solution was cooled to0 C, and 6 M sodium hydroxide was added until the mixture reached a pH of about 7. The aqueous mixture was <Desc/Clms Page number 140>then extracted with dichloromethane (3 x 150 mL) and dichloromethane: methanol (10: 1,3 x 150 mL). The combined organic layers were dried, filtered, and concentrated under reduced pressure to give the title compound (1.60 g, 71 % yield). MS (APCI): m/z 268(M+I+. | |
71.7% | (Production Example 83) 1-Benzhydrylazetidine-3-carboxylic acid To a solution of 1-benzhydryl-3-cyanoazetidine (5.43 g) in methoxyethanol (54 ml) were added potassium hydroxide (6.48 g) and water (3.25 ml), followed by stirring at 100 C for 4 hr. The reaction mixture was allowed to cool down to room temperature. The reaction mixture was poured into ice. After adjusting this to pH 5 with 1N hydrochloric acid, sodium chloride was added thereto. This was extracted with a mixed solvent of ethyl acetate and tetrahydrofuran. The organic layer was washed with brine, and dried over anhydrous sodium sulfate. The organic layer after drying was concentrated under reduced pressure to provide a crude product of the titled compound as pale yellow crystals. The crystals were suspended by addition of diethyl ether (15 ml). The crystals were collected by filtration and washed with diethyl ether. This was dried under aeration to provide the titled compound as pale yellow crystals (4.20 g, 71.7 %). 1H-NMR Spectrum (CDCl3) δ (ppm): 3.00-3.90 (5H, m), 4.95 (1H, s), 7.25-7.28 (2H, m), 7.33 (4H, m), 7.53 (4H, m). | |
With potassium hydroxide; In 2-ethoxy-ethanol; water; ethyl acetate; | (1-Benzhydrylazetidin-3-yl)carboxylic acid may be prepared by carrying out the procedure in the following manner: a solution of 11 g of potassium hydroxide in 9 cm3 of water is added dropwise to a suspension, cooled to +5 C., of 14 g of (1-benzhydrylazetidin-3-yl)carbonitrile in 140 cm3 of 2-ethoxyethanol and then the mixture is heated to 95 C. After stirring for 16 hours at this temperature, the reaction mixture is poured slowly, with stirring, over ice and left at 0 C. for 68 hours and then concentrated to dryness to dryness at 50 C. under reduced pressure (2.7 kPa). The residue is taken up in 400 cm3 of water, the solution is acidified to pH 4 with 6 N hydrochloric acid and then supplemented with 400 cm3 of ethyl acetate. The resulting suspension is filtered, the solid is drained and then dried at 50 C. under reduced pressure (2.7 kPa). 13.55 g of (1-benzhydrylazetidin-3-yl)carboxylic acid are obtained in the form of a cream-colored solid. | |
(3) A mixture of the above product (5.79 g), sodium hydroxide (2.57 g) and 50% aqueous ethanol (50 ml) was heated to reflux for 6 hours with stirring. After cooled to 0 C., the mixture was adjusted to pH3 with concentrated hydrochloric acid, and extracted with chloroform. The extract was sequentially washed with water and brine, and then dried over anhydrous magnesium sulfate. The solvent was removed in vacuo to give 1-diphenylmethylazetidine-3-carboxylic acid (about 6.5 g) as a yellow amorphous solid. The solid was used in the next step without any purification. | ||
In water;Acidic conditions; | A solution of diphenylmethanamine (benzhydrylamine) and 2-oxopropane- 1,3 -diyl dimethanesulfonate were reacted to give 1 -benzhydrylazetidin-3-one 10 (Scheme 2). Reduction of the ketone of 10 with a hydride reducing agent gave 1-benzhydrylazetidin-3-ol11. Alternatively, 11 can be prepared by cyclization of benzhydrylamine and epichlorohydrin in diisopropylethylamine and ethanol. Mesylation of with methanesulfonyl chloride gave 1 -benzhydrylazetidin-3 -yl methanesulfonate 12. Displacement of the mesyl group with cyanide ion gave 1 -benzhydrylazetidine-3-carbonitrile 13. Hydrolysis of 13 with aqueous acid gave 1 -benzhydrylazetidine-3-carboxylic acid 14. Deprotection of 14 by hydrogenolysisgave 1 (CAS Reg. No.: 36476-78-5 zwitterion; 102624-46-4 hydrochloride salt; 106887-11-0 sodium salt; 1282041 potassium salt). |
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