反应详情

To a solution (5 ml) of carbonic acid 7-[4-(4-benzo[b]thiophen-4-ylpiperazin-1-yl)butoxy]-2-oxo-2H-quinolin-1-ylmethyl ester phenyl ester (0.44 g) synthesized in the same manner as in Example 7 in THF was added piperidine (0.76 ml), and the mixture was stirred at room temperature for 3.5 days. Water was added to the reaction mixture and the mixture was extracted with ethyl acetate, dried over sodium sulfate, and concentrated under reduced pressure. The residue was purified by moderate-pressure basic silica gel column chromatography (hexane:ethyl acetate=1:0 to 1:1) to give the title compound (0.44 g, yield quantitative) as a colorless amorphous solid.

1. extractionthe mixture was extracted with ethyl acetate
2. dry with materialdried over sodium sulfate
3. concentrationconcentrated under reduced pressure
4. customThe residue was purified by moderate-pressure basic silica gel column chromatography (hexane:ethyl acetate=1:0 to 1:1)