反应详情

To a solution of 1-(benzyloxycarbonyl)-3-(6-O-ethoxycarbonyl-β-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)-methyl]-5-methylpyrazole (0.17 g) in tetrahydrofuran (4 mL) was added 10% palladium-carbon powder, and the mixture was stirred under hydrogen atmosphere at room temperature for 3 hours. The resulting insoluble material was removed by filtration, and the solvent of the filtrate was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1) to give 3-(6-O-ethoxycarbonyl-β-D-glucopyranosyloxy)-4-[(4-isopropoxyphenyl)methyl]-5-methyl-1H-pyrazole (0.10 g).

1. customThe resulting insoluble material was removed by filtration
2. customthe solvent of the filtrate was removed under reduced pressure
3. customThe residue was purified by column chromatography on silica gel (eluent: dichloromethane/methanol=10/1)