反应详情

120 mg of 1-(piperidin-4-yl)-1H-indole-6-carboxamide and 163 mg of (7-methoxy-2,2-dimethyl-4-oxochroman-8-yl)acetaldehyde were dissolved in 10 ml of methylene chloride. Thereafter, 0.06 ml of acetic acid was added to the reaction solution, and the obtained mixture was then stirred at room temperature for 15 minutes. Thereafter, 157 mg of sodium triacetoxyborohydride was added to the reaction solution, and the obtained mixture was then stirred at room temperature for 1 hour. Thereafter, a saturated sodium bicarbonate aqueous solution was added to the reaction solution, followed by extraction with chloroform. The extract was dried over magnesium sulfate and then concentrated under a reduced pressure. The residue was purified by NH silica gel column chromatography (methanol-ethyl acetate), followed by solidification with ethyl acetate, so as to obtain 220 mg of the subject compound.

1. stirringthe obtained mixture was then stirred at room temperature for 1 hour
2. extractionfollowed by extraction with chloroform
3. dry with materialThe extract was dried over magnesium sulfate
4. concentrationconcentrated under a reduced pressure
5. customThe residue was purified by NH silica gel column chromatography (methanol-ethyl acetate)