N-[9-[(2R,3R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-3-[[di(propan-2-yl)amino]-methoxyphosphanyl]oxy-5-[[(4-methoxyphenyl)-diphenylmethoxy]methyl]oxolan-2-yl]purin-6-yl]benzamide 、 2,3-di-O-acetyluridine 在
四氮唑 、
2,3,5-三甲基吡啶 、
碘 作用下,
生成 [(2R,3R,4R,5R)-4-acetyloxy-2-[[[(2R,3R,4R,5R)-2-(6-benzamidopurin-9-yl)-4-[tert-butyl(dimethyl)silyl]oxy-5-[[(4-methoxyphenyl)-diphenylmethoxy]methyl]oxolan-3-yl]oxy-methoxyphosphoryl]oxymethyl]-5-(2,4-dioxopyrimidin-1-yl)oxolan-3-yl] acetate