Methyl 2-chloro-4-[10-methyl-5-oxo-7-[3-(trifluoromethyl)phenyl]-3,4,8,10,11-pentazatricyclo[7.3.0.02,6]dodeca-1,6,8,11-tetraen-4-yl]benzoate 在
lithium hydroxide 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
以97%的产率得到2-Chloro-4-[10-methyl-5-oxo-7-[3-(trifluoromethyl)phenyl]-3,4,8,10,11-pentazatricyclo[7.3.0.02,6]dodeca-1,6,8,11-tetraen-4-yl]benzoic acid