N4-benzoyl-5-fluoro-1-[(1R,3S,5S,7R,8R)-8-hydroxy-7-(hydroxymethyl)-5-phenyl-2,6-dioxabicyclo[3.3.0]octan-3-yl]cytosine 在
吡啶 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
生成 N-[1-[(2S,3aS,5R,6R,6aR)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-6-[2-cyanoethoxy-[di(propan-2-yl)amino]phosphanyl]oxy-3a-phenyl-3,5,6,6a-tetrahydro-2H-furo[3,2-b]furan-2-yl]-5-fluoro-2-oxopyrimidin-4-yl]benzamide