2-氰乙基N,N-二异丙基氯亚磷酰胺 、
(1'R,2'R,3'S)-1-{2'-hydroxymethyl-3'-[bis(p-methoxyphenyl)phenylmethyloxymethyl]cyclobutyl}-N4-benzoylcytosine 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79%的产率得到(1'R,2'R,3'S)-1-{2'-hydroxymethyl-3'-[bis(p-methoxyphenyl)phenylmethyloxymethyl]cyclobutyl}-N
4-benzoylcytosine 5'-O-(2-cyanoethyl N,N-diisopropylphosphoramidite)