HCID 16656820, compound → HCID 58022222, compound

Participants

Reaction Steps

To a solution of 5-hydroxymethyl-3-[2-chloro-5-(3,4-dihydroquinolin-1(2H)-ylsulfonyl)phenyl]thieno[3,4-d]-pyrimidine-2,4(1H,3H)-dione (77 mg) in N,N-dimethylformamide (2.1 mL) was added manganese (IV) dioxide (0.77 g), and the mixture was stirred at room temperature overnight. The reaction mixture was diluted with ethyl acetate, and the insoluble material was removed by filtration. The filtrate was washed with water and brine successively, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=1/1) to give the title compound (32 mg).

Provenance & Evidence