反应详情

To a solution of 2-methyl-1-(1-phenylethyl)-1H-pyrrolo[2,3-b]pyridine-3-carboxylic acid (400 mg, 1.43 mmol) in dichloromethane (30 mL) were added 1-hydroxybenzotriazole (291 mg, 2.15 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (412 mg, 2.15 mmol) and triethylamine (434 mg, 4.30 mmol). The resultant mixture was stirred at room temperature for 30 minutes. Then 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (262 mg, 1.72 mmol) was added and the resultant mixture was stirred at room temperature for 16 hours. Water (50 mL) was added to the mixture. The mixture was extracted with dichloromethane (100 mL×2). The organic layer was concentrated in vacuo to provide crude product which was purified by column chromatography (silica gel, dichloromethane/methanol=20:1) to afford N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-2-methyl-1-(1-phenylethyl)-1H-pyrrolo-[2,3-b]pyridine-3-carboxamide (400 mg, 67.6%) as a white solid. LRMS (M+H+) m/z: calcd 414.21. found 414. HPLC purity (214 nm): 94%. 1H NMR (300 MHz, CD3OD): δ 8.22-8.13 (m, 2H), 7.28-7.15 (m, 6H), 6.47-6.45 (m, 1H), 6.09 (s, 1H), 4.50 (s, 2H), 2.42 (s, 3H), 2.39 (s, 3H), 2.23 (s, 3H), 2.02 (d, J=7.2 Hz, 3H).

1. extractionThe mixture was extracted with dichloromethane (100 mL×2)
2. concentrationThe organic layer was concentrated in vacuo
3. customto provide crude product which
4. customwas purified by column chromatography (silica gel, dichloromethane/methanol=20:1)