反应详情

The mixture of 5-Fluoro-6-[[4-hydroxy-4-(3-methoxyphenyl)-1-piperidinyl]acetyl]-3,4-dihydroquinolin-2(1H)-one (630 mg, 1.5 mmol) and sodium borohydride (57 mg, 1.5 mmol) in ethanol (17 ml) was stirred at room temperature overnight. To the mixture was added water and extracted with dichloromethane. The extract was dried over sodium sulfate and concentrated in vacuo. The residue was purified by column chromatography (dichloromethane/methanol=10/1) to afford 5-Fluoro-6-[1-hydroxy-2-[4-hydroxy-4-(3-methoxyphenyl)-1-piperidinyl]ethyl]-3,4-dihydroquinolin-2(1H)-one as a yellow solid (220 mg).

1. extractionextracted with dichloromethane
2. dry with materialThe extract was dried over sodium sulfate
3. concentrationconcentrated in vacuo
4. customThe residue was purified by column chromatography (dichloromethane/methanol=10/1)