[(2R,3R,4R,5S)-5-[[tert-butyl(diphenyl)silyl]oxymethyl]-4-[2-[(2R,3S,5R)-3-[tert-butyl(diphenyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]ethylsulfonylmethyl]-2-(2,4-dioxopyrimidin-1-yl)oxolan-3-yl] acetate 在
吡啶 、
4-二甲氨基吡啶 、 TEA 、
氢氟酸 作用下,
以
吡啶 、
乙腈 为溶剂,
反应 8.5h,
生成 [(2R,3R,4R,5S)-5-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-4-[2-[(2R,3S,5R)-3-[2-cyanoethoxy-[di(propan-2-yl)amino]phosphanyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]ethylsulfonylmethyl]-2-(2,4-dioxopyrimidin-1-yl)oxolan-3-yl] acetate