ethyl 1-[4-[(2-chloro-5-fluorobenzoyl)amino]-3-methoxybenzoyl]spiro[3,5-dihydro-2H-1-benzazepine-4,3'-cyclopentene]-1'-carboxylate 在
lithium hydroxide 作用下,
以
四氢呋喃 、
乙醇 为溶剂,
生成 1-[4-[(2-chloro-5-fluorobenzoyl)amino]-3-methoxybenzoyl]spiro[3,5-dihydro-2H-1-benzazepine-4,3'-cyclopentene]-1'-carboxylic acid