反应详情

Method A (Reduction of 2). To a suspension of 2′-deoxy-5-azacytidine (2) (0.045 g, 0.2 mmol) in 96% ethanol (2.9 mL) was added NaBH4 (40 mg, 1.06 mmol), and the mixture was stirred for 10 min at RT. Water (4 mL) was added to the mixture giving a clear solution that was directly used for RP HPLC purification using a gradient of MeCN in 0.1 M triethylammonium bicarbonate buffer. The main fraction after evaporation provided 0.04 g of 9 as a solid. MS ES+231 [M+H+].

1. customgiving a clear solution that
2. customwas directly used for RP HPLC purification
3. customThe main fraction after evaporation