1-[(2R,4S,5R)-4-[bis(4-methoxyphenyl)-phenylmethoxy]-5-[[[(2R,3S,5R)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-methylphosphinothioyl]oxymethyl]oxolan-2-yl]-5-methylpyrimidine-2,4-dione 在
三氟乙酸酐 作用下,
以
四氢呋喃 为溶剂,
以95%的产率得到1-[(2R,4S,5R)-4-[bis(4-methoxyphenyl)-phenylmethoxy]-5-[[[(2R,3S,5R)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxy-methylphosphoryl]oxymethyl]oxolan-2-yl]-5-methylpyrimidine-2,4-dione