trans-methyl 4-[(1-{[2-cyano-3-(trifluoromethyl)phenyl]methyl}-5-methoxy-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-3-yl)methyl]cyclohexane-1-carboxylate 在
lithium hydroxide monohydrate 、
水 作用下,
以
四氢呋喃 为溶剂,
以50.1%的产率得到trans-4-[(1-{[2-cyano-3-(trifluoromethyl)phenyl]methyl}-5-methoxy-2,4-dioxo-1,2,3,4-tetrahydroquinazolin-3-yl)methyl]cyclohexane-1-carboxylic acid