Structure of 74650-70-7
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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. : | 74650-70-7 |
Formula : | C7H8ClNO |
M.W : | 157.59 |
SMILES Code : | CC1=CC(OC)=CN=C1Cl |
MDL No. : | MFCD16610592 |
InChI Key : | GHLYOKOAECDWQL-UHFFFAOYSA-N |
Pubchem ID : | 12852016 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H332-H335 |
Precautionary Statements: | P261-P280-P305+P351+P338 |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.29 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 40.7 |
TPSA ? Topological Polar Surface Area: Calculated from |
22.12 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.12 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.15 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
2.05 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
1.09 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.42 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.97 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.55 |
Solubility | 0.445 mg/ml ; 0.00282 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.25 |
Solubility | 0.893 mg/ml ; 0.00567 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-3.14 |
Solubility | 0.114 mg/ml ; 0.000721 mol/l |
Class? Solubility class: Log S scale |
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) |
Yes |
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 |
-5.73 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 |
1.0 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) |
1.84 |
* 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 |
---|---|---|
1.6 g (35%) | With potassium permanganate; | (C) Preparation of 2-chloro-5-methoxynicotinic Acid A mixture of <strong>[74650-70-7]2-chloro-5-methoxy-3-methylpyridine</strong> (5.0 g, 0.031 mol), H2 O (400 mL) and KMnO4 (18.8 g, 0.12 mol) was heated at reflux for 1 hour. The resulting mixture was then filtered hot through super-cel, cooled and extracted with CH2 Cl2 (3*). The organic layer was dried, filtered and concentrated to yield 1.1 g of recovered <strong>[74650-70-7]2-chloro-5-methoxy-3-methylpyridine</strong>. The aqueous layer was acidified with 12 N HCl concentrated to a small volume. The solid filtered recrystallized from iso-PrOH/Et2 O to yield 1.6 g (35%) of 2-chloro-5-methoxynicotinic acid, mp 169-70 C.; 1 H NMR (DMSO-d6) delta3.95 (3H, s), 7.85 (1H, d, J=3) and 8.3 (1H, d, J=3); IR (nujol) 1740 cm-1. |
1.6 g (35%) | With potassium permanganate; | (C) Preparation of 2-chloro-5-methoxynicotinic Acid A mixture of <strong>[74650-70-7]2-chloro-5-methoxy-3-methylpyridine</strong> (5.0 g, 0.031 mol), H2 O (400 mL) and KMnO4 (18.8 g, 0.12 mol) was heated at reflux for 1 hour. The resulting mixture was then filtered hot through super-cel, cooled and extracted with CH2 Cl2 (3X). The organic layer was dried, filtered and concentrated to yield 1.1 g of recovered <strong>[74650-70-7]2-chloro-5-methoxy-3-methylpyridine</strong>. The aqueous layer was acidified with 12 N HCl concentrated to a small volume. The solid filtered recrystallized from iso-PrOH/Et2 O to yield 1.6 g (35%) of 2-chloro-5-methoxynicotinic acid, mp 169-70 C.; 1 H NMR (DMSO-d6) delta 3.95 (3H, s), 7.85 (1H, d, J=3) and 8.3 (1H, d, J=3); IR (nujol) 1740 cm-1. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
95% | With NaH; In N,N-dimethyl-formamide; | Into a flame dried flask under N2 was placed DMF (150 mL), NaH (50% oil dispersion, 4.0 g, 0.08 mol) and 2-chloro-5-hydroxy-3-methylpyridine (11.7 g, 0.08 mol). The solution was stirred at 0-5 C. until the evolution of H2 ceased and then a solution of CH3 I (5.6 mL, 0.09 mol) in DMF (50 mL) was added dropwise. After the addition, the solution was allowed to stir at room temperature overnight. The resulting slurry was added to H2 O and extracted with Et2 0 (3*). The organic layer was concentrated and the residue distilled at 85 C. (0.6 mm) to yield 12.8 g of 2-chloro-5-methoxy-3-methylpyridine (95%) as an oil; 1 H NMR (CDCl3) delta2.35 (3H, s), 3.8 (3H, s), 7.1 (1H, d, J=3) and 7.9 (1H, d, J=3); MS m/e (M+) 157. |
95% | With NaH; In N,N-dimethyl-formamide; | Into a flame dried flask under N2 was placed DMF (150 mL), NaH (50% oil dispersion, 4.0 g, 0.08 mol) and 2-chloro-5-hydroxy-3-methylpyridine (11.7 g, 0.08 mol). The solution was stirred at 0-5 C. until the evolution of H2 ceased and then a solution of CH3 I (5.6 mL, 0.09 mol) in DMF (50 mL) was added dropwise. After the addition, the solution was allowed to stir at room temperature overnight. The resulting slurry was added to H2 O and extracted with Et2 O (3X). The organic layer was concentrated and the residue distilled at 85 C. (0.6 mm) to yield 12.8 g of 2-chloro-5-methoxy-3-methylpyridine (95%) as an oil; 1 H NMR (CDCl3) delta 2.35 (3H, s), 3.8 (3H, s), 7.1 (1H, d, J=3) and 7.9 (1H, d, J=3); MS m/e (M+) 157. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
91% | In dichloromethane; at 20.0℃; for 18.0h; | Step 1. Synthesis of <strong>[74650-70-7]2-chloro-5-methoxy-3-methylpyridine</strong> 1-oxide (C2) 3-Chloroperoxybenzoic acid (70%, 695 mg, 2.82 mmol) was added to a solution of <strong>[74650-70-7]2-chloro-5-methoxy-3-methylpyridine</strong> (370 mg, 2.35 mmol) in dichloromethane (10 mL). After stirring for 18 hours at room temperature, the reaction mixture was concentrated in vacuo and purified via silica gel chromatography (Gradient: 0% to 10% methanol in ethyl acetate) to afford the product as a white solid. Yield: 370 mg, 2.13 mmol, 91%. 1H NMR (400 MHz, CD3OD) delta 8.14 (d, J=2.5 Hz, 1H), 7.23 (d, J=2.3 Hz, 1H), 3.88 (s, 3H), 2.44 (s, 3H). |
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