反应详情

To a solution of 1-benzyl-2-methyl-1H-indole-3-carboxylic acid (212 mg, 0.8 mmol) in dichloromethane (20 mL) was added 1H-benzo[d][1,2,3]triazol-1-ol (135 mg, 1 mmol), 1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (190 mg, 1 mmol) and triethylamine (252 mg, 2.5 mmol), and stirred at room temperature for 0.5 hour, 3-(aminomethyl)-4,6-dimethylpyridin-2-ol (152 mg, 1 mmol) was added and stirred for 4 hours. To the reaction mixture was added water (20 mL), which was extracted with dichloromethane (2×20 mL), combined and the organic layers were concentrated, the residue was purified by column chromatography (dichloromethane/methanol=20:1) to afford 1-benzyl-N-((2-hydroxy-4,6-dimethylpyridin-3-yl)methyl)-2-methyl-1H-indole-3-carboxamide (200 mg, 63%). LRMS (M+H+) m/z: calcd 399.19. found 399. HPLC purity (214 nm): 100%. 1H NMR (300 MHz, d6-DMSO): δ 11.61 (s, 1H), 7.80-7.69 (m, 2H), 7.46-7.42 (m, 1H), 7.30-7.22 (m, 3H), 7.11-7.07 (m, 2H), 6.98 (d, J=7.5 Hz, 2H), 5.89 (s, 1H), 5.46 (s, 2H), 4.33 (d, J=4.5 Hz, 2H), 2.57 (s, 3H), 2.26 (s, 3H), 2.11 (s, 3H).

1. stirringstirred for 4 hours
2. extractionwas extracted with dichloromethane (2×20 mL)
3. concentrationthe organic layers were concentrated
4. customthe residue was purified by column chromatography (dichloromethane/methanol=20:1)