[Ethoxycarbonylmethyl-({3-[2-(4-sulfamoyl-phenyl)-ethylcarbamoyl]-phenylcarbamoyl}-methyl)-amino]-acetic acid ethyl ester 在
lithium hydroxide 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 6.0h,
以73%的产率得到2-[Carboxymethyl-[2-oxo-2-[3-[2-(4-sulfamoylphenyl)ethylcarbamoyl]anilino]ethyl]amino]acetic acid