1-[(2R,4S,5R)-5-[[benzoyl-[(2R,3S,5R)-2-[[bis(4-methoxyphenyl)-phenylmethoxy]methyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]oxyphosphoryl]oxymethyl]-4-[bis(4-methoxyphenyl)-phenylmethoxy]oxolan-2-yl]-5-methylpyrimidine-2,4-dione 在
sulfur 、
1,8-二氮杂双环[5.4.0]十一碳-7-烯 、
正丁胺 作用下,
以
吡啶 为溶剂,
反应 1.0h,
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-hydroxyphosphinothioyl]oxymethyl]oxolan-2-yl]-5-methylpyrimidine-2,4-dione