Dimethylformamide → 2',3',5'-Tris-O-(tert-butyldimethylsilyl)-8-(3'-methoxy-carbonylmethoxybiphenyl-4-ylmethylamino)adenosine

Participants

Reaction Steps

To a solution of 2′,3′,5′-tris-O-(tert-butyl-dimethylsilyl)-8-(3′-hydroxybiphenyl-4-ylmethylamino)-adenosine (0.612 g) in N,N-dimethylformamide (4.0 mL) was added potassium carbonate (0.165 g). Then methyl bromoacetate (0.098 mL) was added, and the resulting mixture was stirred at room temperature for 5 hours. The reaction mixture was partitioned between diethyl ether (55 mL) and water (10 mL). The organic layer was washed successively with water (10 mL×2) and brine (10 mL), dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=3/2) to give the title compound (0.423 g).

Provenance & Evidence