1,4-Dihydro-2-methyl-6-(3-phenylureido)-4-<2-(trifluormethyl)phenyl>-3,5-pyridindicarbonsaeure-diethylester 在
氢氧化钾 作用下,
以
乙醇 为溶剂,
反应 1.0h,
以68%的产率得到1,2,3,4,5,8-Hexahydro-7-methyl-2,4-dioxo-3-phenyl-5-<2-(trifluormethyl)phenyl>pyrido<2,3-d>pyrimidin-6-carbonsaeure-ethylester 1-Kaliumsalz