N4-acetyl-2'-O-(t-butyldimethylsilyl)-3'-deoxy-5'-O-(4,4'-dimethoxytrityl)cytidine 在
silica gel 、
乙酸乙酯 作用下,
以
ammonia methanol 为溶剂,
反应 16.0h,
以to give 2′-O-(t-butyldimethylsilyl)-3′-deoxy-5′-O-(4,4′-dimethoxytrityl)cytidine as yellow solid (6.0 g, 58.2%)的产率得到2'-O-(t-butyldimethylsilyl)-3'-deoxy-5'-O-(4,4'-dimethoxytrityl)cytidine