2-氰乙基N,N-二异丙基氯亚磷酰胺 、
N4-benzoyl-2'-deoxy-5'-O-(4,4'-dimethoxytrityl)-5-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxymethyl)cytidine 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以85%的产率得到N
4-benzoyl-2'-deoxy-5'-O-(4,4'-dimethoxytrityl)-5-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyloxymethyl)cytidine 3'-O-(2-cyanoethyl-N,N-diisopropyl)phosphoramidite