({3-[(S)-4-{3,5-Bis-[(bis-ethoxycarbonylmethyl-amino)-methyl]-benzoylamino}-1-(4-sulfamoyl-benzylcarbamoyl)-butylcarbamoyl]-5-[(bis-ethoxycarbonylmethyl-amino)-methyl]-benzyl}-ethoxycarbonylmethyl-amino)-acetic acid ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
甲醇   、                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以98%的产率得到2-[[3-[[(4S)-4-[[3,5-bis[[bis(carboxymethyl)amino]methyl]benzoyl]amino]-5-oxo-5-[(4-sulfamoylphenyl)methylamino]pentyl]carbamoyl]-5-[[bis(carboxymethyl)amino]methyl]phenyl]methyl-(carboxymethyl)amino]acetic acid