吡啶 、
(R)-5-[2-(2-bromo-ethyl)-4-cyano-phenyl]-7-methyl-3-oxo-8-(3-trifluoromethyl-phenyl)-2,3,5,8-tetrahydro-[1,2,4] triazolo[4,3-a]pyrimidine-6-carboxylic acid methyl ester 在
crude product 、
水 、
乙酸乙酯 作用下,
反应 3.0h,
以to give the title compound as a white electrostatic solid (0.39 g)的产率得到1-(2-{5-cyano-2-[(R)-6-methoxycarbonyl-7-methyl-3-oxo-8-(3-trifluoromethyl-phenyl)-2,3,5,8-tetrahydro-[1,2,4]triazolo[4,3-a]pyrimidin-5-yl]-phenyl}-ethyl)-pyridinium bromide