2-氰乙基N,N-二异丙基氯亚磷酰胺 、
(1S,3S,5R,6R,8R)-3-Acetoxymethyl-6-(4,4'-dimethoxytrityloxomethyl)-5-hydroxy-8-(thymin-1-yl)-2,7-dioxabicyclo[3.3.0]octane 在
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 18.0h,
以50%的产率得到(1S,3S,5R,6R,8R)-3-Acetoxymethyl-5-[2-cyanoethoxy(diisopropylamino)phosphinoxy]-6-(4,4'-dimethoxytrityloxomethyl)-8-(thymin-1-yl)-2,7-dioxabicyclo[3.3.0]octane