(1'R,2'R,3'S)-9-[2'-benzoyloxymethyl-3'-(hydroxymethyl)cyclobutyl]-N2-isobutyrylguanine 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 25.0h,
生成 (1'R,2'R,3'S)-9-{2'-hydroxymethyl-3'-[bis(p-methoxyphenyl)phenylmethyloxymethyl]cyclobutyl}-N
2-(N,N-dimethylaminomethylene)guanine 5'-O-(2-cyanoethyl N,N-diisopropylphosphoramidite)