(1'R,2'R,3'S)-1-[2'-benzoyloxymethyl-3'-(hydroxymethyl)cyclobutyl]-N4-benzoylcytosine 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 13.17h,
生成 (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)