反应详情

Sodium triacetoxyborohydride (154 mg, 0.72 mmol) was added to a stirred solution of (2R,3R,4S,5R)-2-[2-(aminomethyl)-6-(phenethylamino)-9H-purin-9-yl]-5-(methoxymethyl)tetrahydro-3,4-furandiol (200 mg, 0.48 mmol) (preparation 48), acetic acid (30 mg, 0.48 mmol) and cyclohexanone (45 mg, 0.46 mmol). The reaction mixture was stirred for 24 hr at room temperature and the solvent then removed under reduced pressure. The residue was then azeotroped with dichloromethane before purification by column chromatography on silica gel eluting with a solvent system of dichloromethane:methanol:ammonia (93:7:0.3) to give the title compound (110 mg) as a viscous oil. MS: 497 (MH+).

1. customthe solvent then removed under reduced pressure
2. customThe residue was then azeotroped with dichloromethane before purification by column chromatography on silica gel eluting with a solvent system of dichloromethane:methanol:ammonia (93:7:0.3)