Structure of 53137-27-2
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CAS No. : | 53137-27-2 |
Formula : | C6H7NO2S |
M.W : | 157.19 |
SMILES Code : | O=C(C1=C(C)N=C(C)S1)O |
MDL No. : | MFCD00052943 |
InChI Key : | MQGBARXPCXAFRZ-UHFFFAOYSA-N |
Pubchem ID : | 736488 |
GHS Pictogram: |
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Signal Word: | Warning |
Hazard Statements: | H315-H319-H335 |
Precautionary Statements: | P261-P305+P351+P338 |
Num. heavy atoms | 10 |
Num. arom. heavy atoms | 5 |
Fraction Csp3 | 0.33 |
Num. rotatable bonds | 1 |
Num. H-bond acceptors | 3.0 |
Num. H-bond donors | 1.0 |
Molar Refractivity | 39.01 |
TPSA ? Topological Polar Surface Area: Calculated from |
78.43 ?2 |
Log Po/w (iLOGP)? iLOGP: in-house physics-based method implemented from |
1.31 |
Log Po/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by |
1.61 |
Log Po/w (WLOGP)? WLOGP: Atomistic method implemented from |
1.46 |
Log Po/w (MLOGP)? MLOGP: Topological method implemented from |
0.02 |
Log Po/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by |
2.31 |
Consensus Log Po/w? Consensus Log Po/w: Average of all five predictions |
1.34 |
Log S (ESOL):? ESOL: Topological method implemented from |
-2.13 |
Solubility | 1.16 mg/ml ; 0.00736 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (Ali)? Ali: Topological method implemented from |
-2.87 |
Solubility | 0.213 mg/ml ; 0.00135 mol/l |
Class? Solubility class: Log S scale |
Soluble |
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by |
-1.43 |
Solubility | 5.85 mg/ml ; 0.0372 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 |
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 |
-6.12 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 |
0.56 |
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) |
2.34 |
* 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 |
---|---|---|
90% | With sodium hydroxide; In ethanol; water; for 4h;Reflux; | General procedure: The appropriate ethyl ester (1c, 3c) (5.8 mmol) was refluxed for4 h in a mixture of equal volumes of aqueous 10% NaOH (20 mL) andEthanol (20 mL). After completion of the reaction, ethanol wasevaporated under reduced pressure and the remaining solutionwasthen extracted with ethyl acetate. The organic layer was discardedwhile the aqueous layer was acidified to pH 3 with aqueous 10%hydrochloric acid. The mixturewas then evaporated under reducedpressure and the solid obtained was then dissolved in methanolwhile the remaining insoluble NaCl was discarded. Evaporating themethanol afforded the desired pure acids 1d and 3d. |
With potassium hydroxide; In methanol; water; | After 9.7 g of potassium hydroxide were added to 50 ml of methanol and 50 ml of water, 10.2 g of ethyl 2,4-dimethyl-5-thiazolecarboxylate were added dropwise thereto at room temperature. The reaction was conducted at room temperature for 1 hour, and the reaction mixture was then acidified with 2-N hydrochloric acid. After methanol was distilled off, the crystals were collected through filtration, washed with water, and dried to obtain 6.6 g of the Compound No. 2.1 of the present invention. melting point: from 220 to 225 C. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a flask containing <strong>[53137-27-2]2,4-dimethylthiazole-5-carboxylic acid</strong> (2.50 g, 15.9 mmol) was added DCM (75 mL) and DMF (3 mL) to afford a homogeneous solution. Then, carbonyldiimidazole (2.84 g, 17.5 mmol) was added and the mixture was stirred at room temperature for 2 hours. N,O-dimethylhydroxylamine hydrochloride (1.90 g, 19.9 mmol) was then added and the reaction mixture was stirred at room temperature for 18 hours, then diluted with water and 1 N NaOH and extracted with DCM (4×50 mL). The combined organics were washed with brine, dried over Na2SO4, filtered and concentrated. Flash chromatography on silica gel (10-40% EtOAc-DCM) provided the title compound as a colorless oil. | ||
To a flask containing <strong>[53137-27-2]2,4-dimethylthiazole-5-carboxylic acid</strong> (2.5 g, 15.9 mmol) was added DCM (75 mL) to give a suspension. DMF (3 mL) was added which resulted in a homogeneous solution. Then, carbonyldiimidazole (2.84 g, 17.5 mmol) was introduced and the mixture was stirred at room temperature for 2 hours. N,O-dimethylhydroxylamine HCl (1.9 g, 19.9 mmol) was then added and the mixture was stirred at room temperature for 18 hours, at which time the reaction mixture was diluted with water and 1 N aqueous NaOH and the aqueous portion was extracted with DCM (4*50 mL). The combined organics were washed with brine, dried over Na2SO4, filtered and concentrated. Chromatography on silica gel (10% EtOAc-DCM increasing to 40% EtOAc) provided the title compound as a colorless oil. | ||
intermediate 17: step aN-methoxy-N,2,4-trimethylthiazole-5-carboxamideTo a flask containing 2,4-dimethylthiazole~5~carboxylic acid (2.5 g, 15.9 mmol) was added DCM (75 mL) to give a suspension . DMF (3 mL) was added which resulted in a homogeneous solution. Then, carbonyldiimidazole (2.84 g, 17.5 mmol) was introduced and the mixture was stirred at, room temperature for 2 hours. N,0-dim.ethymydroxylamine HQ (1 .9 g, 19.9 mmol) was then added and the mixture was stirred at room temperature for 18 hours, at which time the reaction mixture was diluted with water and 5 N aqueous NaOH and the aqueous portion was extracted with DCM (4 x 50 mL). The combined organics were washed with brine, dried over a2S04, filtered and concentrated. Chromatography on silica gel (1 0% EtOAc-DCM increasing to 40% EtOAc) provided the title compound as a colorless oil. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
<strong>[53137-27-2]2,4-dimethyl-5-thiazoic acid</strong>(0.080 g) and 1H-benzotriazol-1-ol (0.060 g) were added to intermediate 22 (0.100 g) in CH2Cl2 (5 ml). The mixture was stirred and cooled on an ice-bath, under N2 flow. Triethylamine was added dropwise. A solution of (CH3)2-N-(CH2)3-NN-CH2-CH3 (0.080 g) in CH2Cl2 (5 ml) was added dropwise and the reaction mixture was allowed to warm to RT, under N2. The reaction mixture was stirred overnight. Then, the compound was isolated and purified by column chromatography (eluent: (0.5% ammoniumacetate in H2O)/CH3OH/CH3CN 70/15/15 upgrading to 0/0/100). The desired fractions were collected and the solvent was evaporated, yielding 0.070 g of (+/-)-trans-N-[1-[1-[(2,4-dimethyl-5-thiazolyl)carbonyl]-2-(phenylmethyl)-4-piperidinyl]-4-phenyl-4-piperidinyl]acetamide (compound 121). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
<strong>[53137-27-2]2,4-dimethyl-5-thiazoic acid</strong>(0.080 g) and 1H-benzotriazol-1-ol (0.060 g) were added to intermediate 22 (0.100 g) in CH2Cl2 (5 ml). The mixture was stirred and cooled on an ice-bath, under N2 flow. Triethylamine was added dropwise. A solution of (CH3)2-N-(CH2)3-NN-CH2-CH3 (0.080 g) in CH2Cl2 (5 ml) was added dropwise and the reaction mixture was allowed to warm to RT, under N2. The reaction mixture was stirred overnight. Then, the compound was isolated and purified by column chromatography (eluent: (0.5% ammoniumacetate in H2O)/CH3OH/CH3CN 70/15/15 upgrading to 0/0/100). The desired fractions were collected and the solvent was evaporated, yielding 0.070 g of (+/-)-trans-N-[1-[1-[(2,4-dimethyl-5-thiazolyl)carbonyl]-2-(phenylmethyl)-4-piperidinyl]-4-phenyl-4-piperidinyl]acetamide (compound 121). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
<strong>[53137-27-2]2,4-dimethyl-5-thiazoic acid</strong>(0.080 g) and 1H-benzotriazol-1-ol (0.060 g) were added to intermediate 22 (0.100 g) in CH2Cl2 (5 ml). The mixture was stirred and cooled on an ice-bath, under N2 flow. Triethylamine was added dropwise. A solution of (CH3)2-N-(CH2)3-NN-CH2-CH3 (0.080 g) in CH2Cl2 (5 ml) was added dropwise and the reaction mixture was allowed to warm to RT, under N2. The reaction mixture was stirred overnight. Then, the compound was isolated and purified by column chromatography (eluent: (0.5% ammoniumacetate in H2O)/CH3OH/CH3CN 70/15/15 upgrading to 0/0/100). The desired fractions were collected and the solvent was evaporated, yielding 0.070 g of (+/-)-trans-N-[1-[1-[(2,4-dimethyl-5-thiazolyl)carbonyl]-2-(phenylmethyl)-4-piperidinyl]-4-phenyl-4-piperidinyl]acetamide (compound 121). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
73% | With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; In DMF (N,N-dimethyl-formamide); for 14h; | N- [3- (2-HYDROXYETHYL) PHENYL]-2, 4-DIMETHYL-1, 3-THIAZOLE-5-CARBOXAMIDE; 2- (3-Aminophenyl) ethanol (1.202 g, 8.76 MMOL) was added to a solution of 2, 4-dimethyl- 1, 3-thiazole-5-carboxylic acid (1.652 g, 10.51 MMOL), 1- (3-DIMETHYLAMINOPROPYL)-3- ethylcarbodiimide hydrochloride (2.015 g, 10.51 MMOL) and 1-hydroxybenzotriazole (1.420 g, 10.51 MMOL) in dry DMF (20 mL). The mixture was stirred for 14h then the DMF was removed under reduced pressure and the residue was partitioned between DCM and saturated aqueous sodium hydrogencarbonate solution. The organic layer was dried over magnesium sulfate and concentrated under reduced pressure. The crude compound was purified by flash chromatography on silica gel, eluting with ethyl acetate-cyclohexane (1: 1 to 1: 0) affording the title compound in 73% yield (1.772 g). MS; (ES) m/z: 277 [MH+]. C14H16N202S requires 276. 1H-NMR (300 MHz, D6-DMSO) S (ppm): 9.95 (s, 1H), 7.40-7. 50 (m, 2H), 7.19 (t, 1H), 6.92 (d, 1 H), 4.60 (t, 1 H), 5.57 (dd, 2H), 2.66 (t, 2H), 2.61 (s, 3H), 2.49 (s, 3H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With trichlorophosphate; In acetonitrile; for 1h;Heating / reflux; | Phosphorus oxychloride (296 mg) was added to a stirred mixture of N-[5-(5-amino-6-chloropyridin-3-yl)-4-methyl-l,3-thiazol-2-yl]acetamide (180 mg), 2,4-dimethylthiazole- 5-carboxylic acid (J. Med. Chem., 1999, 42, 5064; 109 mg) and acetonitrile (10 mL) that had been heated to reflux. The resultant mixture was stirred and heated to- reflux for 1 hour. The mixture was cooled to room temperature and the precipitate was collected by filtration, washed with acetonitrile and dried under vacuum. There was thus obtained the title compound(172 mg); 1H NMR Spectrum: (DMSOd6) 2.16 (s, 3H), 2.39 (s, 3H), 2.62 (s, 3H), 2.68 (s, 3H), 8.21 (s, IH), 8.40 (s, IH); Mass Spectrum: M+H+ 422. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With thionyl chloride; In tetrahydrofuran; | EXAMPLE 1 (Compound No. 1) To a solution of imidazole (2.72 g; 40 mmol) in dry tetrahydrofuran (60 ml) was added dropwise thionyl chloride (1.20 g; 10 mmol) under ice-cooling while stirring. After the resultant mixture was turned to room temperature, <strong>[53137-27-2]2,4-dimethyl-5-thiazolecarboxylic acid</strong> (1.57 g; 10 mmol) was added thereto at once, and stirring was continued for 30 minutes, whereby 5-imidazolylcarbonyl-2,4-dimethylthiazole was produced. |
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