2-氰乙基N,N-二异丙基氯亚磷酰胺 、
6-N-benzoyl-2'-deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-4'-phenylseleno-adenosine 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90%的产率得到6-N-benzoyl-3'-O-(2-cyanoethyl N,N-diisopropyl-phosphoramidite)-2'-deoxy-5'-O-(4,4'-dimethoxytriphenylmethyl)-4'-phenylseleno-adenosine