[(2R,3R,4S)-5-(6-amino-8-oxo-7H-[1,2,4]triazolo[3,4-f][1,2,4]triazin-3-yl)-4-methyl-3,4-bis[(4-methylbenzoyl)oxy]oxolan-2-yl]methyl 4-methylbenzoate 在
4-二甲氨基吡啶 、
tetraphosphorus decasulfide 作用下,
以
1,4-二氧六环 为溶剂,
反应 1.17h,
以88%的产率得到[(2R,3R,4S,5S)-5-(6-amino-8-sulfanylidene-5H-[1,2,4]triazolo[3,4-f][1,2,4]triazin-3-yl)-4-methyl-3,4-bis[(4-methylbenzoyl)oxy]oxolan-2-yl]methyl 4-methylbenzoate