Structure of 55876-82-9
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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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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. : | 55876-82-9 |
Formula : | C9H11NO2 |
M.W : | 165.19 |
SMILES Code : | O=C(OCC)C1=NC=C(C)C=C1 |
MDL No. : | MFCD10566273 |
InChI Key : | QURWMBHAPRCRJZ-UHFFFAOYSA-N |
Pubchem ID : | 12243769 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 12 |
Num. arom. heavy atoms | 6 |
Fraction Csp3 | 0.33 |
Num. rotatable bonds | 3 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 45.29 |
TPSA ? Topological Polar Surface Area: Calculated from |
39.19 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
2.23 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
2.41 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.57 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.98 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
1.98 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.83 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.55 |
Solubility | 0.461 mg/ml ; 0.00279 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.88 |
Solubility | 0.22 mg/ml ; 0.00133 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-2.88 |
Solubility | 0.215 mg/ml ; 0.0013 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 |
-5.6 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) |
1.83 |
* 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 |
---|---|---|
84% | With sodium ethanolate; In toluene; for 5h;Reflux; | EXAMPLE 2 Synthesis of (5-amino-1H-pyrazol-4-yl)-(5-methylpyridin-2-yl)-methanone Sodium (2.2 g, 0.0963 moles) and anhydrous ethanol were combined and stirred until dissolved. The ethanol and azeotrope were stripped off with anhydrous toluene (35 ml). Additional anhydrous toluene (35 ml) was added followed by <strong>[55876-82-9]ethyl-5-methylpyridinecarboxylate</strong> (15.9 g, 0.0963 moles) and anhydrous acetonitrile (6.6 ml, 0.125 moles). The mixture was refluxed for 5 hrs then stirred at room temperature overnight. The reaction was then diluted with heptane (300 ml) and the solid was filtered and dried. LC/MS M +H 161. The solid was then suspended in dichloromethane (150 ml) and acidified with acetic acid. The mixture was filtered through a silica gel plug with dichloromethane. The organic portions were removed to yield a dark brown solid, 3-(5-methylpyridin-2-yl)-3-oxopropionitrile (12.98 g, 84% yield), which was used without further purification. Next, 3-(5-methylpyridin-2-yl)-3-oxopropionitrile (12.98 g, 0.081 moles) and dichloromethane (150 ml) were combined and cooled to -10 C. Dimethylformamide dimethylacetal (2.57 g, 0.0216 moles) was added. TLC showed the reaction was complete after 2 hours. The reaction was concentrated to a brown oil. LC/MS M +H 216. Next, the brown oil was dissolved in ethanol (125 ml) with aminoguanidine nitrate (14.1 g, 0.103 moles) and 10 N sodium hydroxide (8.5 ml). After 5 hours at reflux the reaction was cooled to room temperature and stirred overnight. LC/MS showed that the reaction was complete. The solvent was stripped off and the residue dissolved in ethyl acetate and washed with water (2 X), dried over magnesium sulfate, filtered and stripped to a brown solid which was identified as (3-amino-1H-pyrazol-4-yl)-(5-methylpyridin-2-yl)-methanone (5.27 g, 32% yield). LC/MS M +H 203. 1H NMR (DMSO) 2.39 (3H, s, CH3), 6.88 (2H, br, s), 7.8 (1H, d), 7.9 (1H, d), 8.32 (1H, s), 856 (1H, s), 11.88 (1H, br, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sulfuric acid; sodium hydrogencarbonate; In ethanol; | Synthesis Example 1 Ethyl 5-methylpyridine-2-carboxylate STR24 200 ml of ethanol and 100 ml (1.88 mol) of concentrated sulfuric acid were added to 55.5 g of 5-methylpyridine-2-carbonitrile to form a homogeneous solution, followed by heating under reflux for 2 days. The reaction liquid was gradually poured into a saturated aqueous solution of sodium hydrogencarbonate under cooling with ice to neutralize the sulfuric acid, followed by extraction with dichloromethane. The organic layer was washed with a saturated aqueous solution of common salt and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated in a reduced pressure to give 78.1 g of a brown oil of the title compound as the crude product. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
37% | In 6N-hydrochloric acid; acetonitrile; | Synthesis Example 2 2-Carboxy-5-methylpyridinium chloride STR25 78.1 g of the crude product of the <strong>[55876-82-9]ethyl 5-methylpyridine-2-carboxylate</strong> obtained in Synthesis Example 1 was dissolved in 200 ml of 6N-hydrochloric acid, followed by heating under reflux for 16 hours. The reaction solution was concentrated in a reduced pressure. Then, acetonitrile was added to the residue, and the white crystal thus precipitated was recovered by filtration, washed with acetonitrile and dried at 90 C. to give 26.3 g of the title compound. Yield 37%. 1H-NMR (400 MHz, CDCl3) delta; 8.51 (1H, m), 8.37 (1H, m), 8.21 (1H, d, J=8.0 Hz), 2.42 (3H, s). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In 1,4-dioxane; | EXAMPLE 6 Preparation of ethyl 5-methylpyridine-2-carboxylate 6.1 g of triethylamine are added at 0 C. to 13 g of ethyl 2,3-di-bromopropionate in 50 ml of dioxane. The mixture is stirred for 2 hours at room temperature and then a solution of 5.6 g of 1-dimethylamino-1-aza-3-methyl-1,3-butadiene and 6.1 g of triethylamine in 50 ml of dioxane is added dropwise. The reaction mixture is kept for 30 hours at 70 C. and then cooled and concentrated by evaporation. The residue is partitioned between water and ether and the organic phase is washed with brine, dried and concentrated by evaporation. The residue is distilled under reduced pressure, affording 3.2 g of the title compound as an oil with a boiling point of 69-74 C. (at 0.08 mbar). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43% | With sulfuric acid; at 80℃; for 48h; | To a solution of 21 5-methylpyridine-2-carbonitrile (5 g, 42.3 mmol, 1.00 equiv) in 37 ethanol (40 mL) was added 38 sulfuric acid (10 mL, 4.00 equiv). The resulting solution was stirred for 2 days at 80 C. The reaction mixture was cooled to 25 C. The resulting mixture was concentrated under vacuum. The resulting solution was diluted with water (100 mL). The pH value of the solution was adjusted to 8-9 with potassium carbonate. The resulting solution was extracted with ethyl acetate (3×100 mL). The organic layers were washed with water (3×50 mL) and brine (3×50 mL). The mixture was dried over anhydrous sodium sulfate and concentrated under vacuum to afford 3 g (43%) of 36 methyl 5-methylpyridine-2-carboxylate as light yellow oil. LC-MS: m/z=166[M+H]+. |
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