Water → HCID 59310100, compound

Participants

Reaction Steps

To a solution of 9-[2-chloro-5-(2,3-difluoro-6-methoxybenzyloxy)-4-methoxyphenyl]-2-hydroxymethyl-6-methoxy-7,9-dihydro-8H-purin-8-one (0.14 g) in acetone (5 mL) was added this solution in a dropwise manner under ice-cooling, and the mixture was stirred at the same temperature for 10 minutes, and then stirred at room temperature overnight. To the reaction mixture was added 2-propanol (2 mL), and the mixture was stirred at room temperature for 20 minutes. To the mixture were added water and ethyl acetate, and the insoluble material was removed by filtration. The insoluble material was washed with water, ethyl acetate and diethyl ether successively. The filtrate and washings were combined, and the organic layer was separated. The organic layer was washed with water and brine, and dried over anhydrous sodium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: ethyl acetate−ethyl acetate/methanol=1/1) to give the title compound (4 mg).

Provenance & Evidence