Structure of 20970-50-7
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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. : | 20970-50-7 |
Formula : | C6H8N2O |
M.W : | 124.14 |
SMILES Code : | CC(C1=CN=CN1C)=O |
MDL No. : | MFCD08668302 |
InChI Key : | DARZKTBWZJGBSD-UHFFFAOYSA-N |
Pubchem ID : | 15128990 |
GHS Pictogram: |
![]() |
Signal Word: | Warning |
Hazard Statements: | H302-H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 9 |
Num. arom. heavy atoms | 5 |
Fraction Csp3 | 0.33 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 2.0 |
Num. H-bond donors | 0.0 |
Molar Refractivity | 33.68 |
TPSA ? Topological Polar Surface Area: Calculated from |
34.89 Ų |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.35 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
0.03 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
0.62 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
-0.66 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
0.61 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
0.39 |
Log S (ESOL):? ESOL: Topological method implemented from |
-0.97 |
Solubility | 13.2 mg/ml ; 0.106 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (Ali)? Ali: Topological method implemented from |
-0.32 |
Solubility | 60.1 mg/ml ; 0.484 mol/l |
Class? Solubility class: Log S scale |
Very soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.09 |
Solubility | 10.1 mg/ml ; 0.0815 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) |
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 |
-7.04 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) |
1.46 |
* 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 |
---|---|---|
74% | In tetrahydrofuran; diethyl ether; at 0 - 40℃; for 4h; | [2515] Took crude (882) (14.2 mmol), and dissolve in THF (100 ml). Cool in an iced bath and add MeMgBr (3 Molar in diethyl ether); (22.2 ml), dropwise over 10 minutes, under N2. Let warm to 40 C. and stir for 4 hours or until reaction is complete. Cool in an iced bath and add saturated NH4Cl. Extract with ethyl acetate and then 3×with CH2Cl2. Dry with MgSO4, filter and evaporate. Store under vacuum to obtain crystals-(883)(1.78 g, 74%). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; hydrogen bromide; pyridinium hydrobromide perbromide; In methanol; ethanol; dichloromethane; acetic acid; ethyl acetate; | EXAMPLE 3 2-Benzyl-4-(1'-methyl-5'-imidazolyl)thiazole hydrochloride A solution of <strong>[20970-50-7]5-acetyl-1-methylimidazole</strong> (100 mg, 0.81 mmol) in 2.4 ml of acetic acid was stirred at 25 C. as 0.24 ml (0.30 g, 1.2 mmol) of 31% hydrobromic acid in acetic acid was added. Pyridinium bromide perbromide (0.29 g, 0.91 mmol) was added, giving an orange solution from which a yellow precipitate formed after 30 minutes. After 2.5 hours, ether (5 ml) was added. The supernatant was removed by pipet, and the precipitate was dried under a stream of nitrogen. Ethanol (6 ml) and benzylthioamide (137 mg, 0.91 mmol) were added, and the mixture was heated to reflux for 45 minutes. The reaction was cooled to 25 C., poured into 25 ml of ether, and washed with 50 ml of 1.25N aqueous sodium hydroxide. The aqueous layer was extracted with 2*25 ml of ether, and the organic extracts were combined, dried (sodium sulfate), filtered, and evaporated. The residue was purified by column chromatography on silica gel (5 g), eluted with 8% isopropanol in 4:1 dichloromethane/ethyl acetate, yielding 2-benzyl-4-(1'-methyl-5'-imidazolyl)thiazole (159 mg, 77% yield) as an almost colorless oil. The free base (159 mg, 0.62 mmol) was dissolved in 10 ml of methanol and treated with 0.32 ml (0.64 mmol) of 2.0N aqueous hydrochloric acid. Evaporation of the solution yielded 183 mg of pale yellow crystals. Recrystallization from 2:1 ethyl acetate/ethanol gave 2-benzyl-4-(1'-methyl-5'-imidazolyl)thiazole hydrochloride (111 mg, 61% recovery) as colorless plates, m.p. 191-194 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
42% | [2516] Dissolve 365 (0.24 g, 0.49 mmol) in THF (2.5 ml). Cool under N2 to -78 C., add (1) (BuLi, 2.5M, 0.2 ml) and stir the resulting dark brown solution for 15 minutes. Dissolved 883 (0.116 g) from Step C in 0.5 mL of THF and add to reaction and stir at -78 C. for 3 hours. Add reaction mixture to brine and extract with ethyl acetate(2×). Dry with MgSO4, filter and evaporate to obtain a yellow solid. Purified crude (0.29 g) by Prep Plate Chromatography to afford 0.0.15 g, 42% yield of the desired product (795.1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
38% | General procedure: nder an argon atmosphere, 9a (436 mg, 1.65 mmol) was dissolved in dry THF (30 mL) and the mixture was cooled to -65 C in a dry ice acetone bath. A n-BuLi hexane solution (1.6 M: 2.28 mL, 3.63 mmol) was added with stirring and the mixture was stirred at the same temperature for 1.5 h. After stirring, a solution of 6 (183 mg, 1.5 mmol) in dry THF (3 mL) was added dropwise and the whole was stirred at the same temperature for 1.5 h. After dilution with saturated aqueous ammonium chloride solution, the mixture was concentrated under reduced pressure. The resulting residue was dissolved in ethanol and the insoluble material was filtered off. The filtrate was concentrated under reduced pressure and the resulting residue was chromatographed on silica gel (CHCl3/7% ammonia in MeOH = 19:1) and crystallized from CHCl3 and diethylether to give 3c (121 mg, 26%) as a colorless powder. |
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