2-(9-fluorenylmethoxycarbonylamino)-7-[2'-deoxy-5'-O-(4'',4'''-dimethoxytriphenylmethyl)-β-D-ribofuranos-1-yl]phenanthrene 、
2-氰乙基N,N-二异丙基氯亚磷酰胺 在
N,N-二异丙基乙胺 作用下,
以
四氢呋喃 为溶剂,
反应 1.0h,
以83%的产率得到2-(9-fluorenylmethoxycarbonylamino)-7-[2'-deoxy-3'-O-(2-cyanoethyloxy-N,N'-diisopropylaminophosphino)-5'-O-(4'',4'''-dimethoxytriphenylmethyl)-β-D-ribofuranos-1-yl]phenanthrene