ethyl 9-benzyl-5-carbamoyl-7-(dimethyl-1,2-oxazol-4-yl)-9H-carbazole-3-carboxylate 、
sodium hydroxide 在
盐酸 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 1.0h,
以to give 500 mg (88% 2 steps) of 9-benzyl-5-carbamoyl-7-(3,5-dimethylisoxazol-4-yl)-9H-carbazole-3-carboxylic acid的产率得到9-benzyl-5-carbamoyl-7-(3,5-dimethylisoxazol-4-yl)-9H-carbazole-3-carboxylic acid