2-[(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-3-[2-[(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-3-[2-[(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-3-[2-[(2R,3S,5R)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)-3-(sulfanylmethyl)oxolan-2-yl]ethylsulfonylmethyl]oxolan-2-yl]ethylsulfanylmethyl]oxolan-2-yl]ethylsulfonylmethyl]oxolan-2-yl]ethyl benzoate 、
在
caesium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 7.0h,
生成