Comparable rates for cleavage of amide and ester bonds through nucleophilic attack by carboxylate anion and general acid catalysis by metal-bound water in a carboxypeptidase A model
作者:Junghun Suh、Tae Hoon Park、Byung Keun Hwang
DOI:10.1021/ja00039a027
日期:1992.6
metal-ion-catalyzed deacylation of 3 and 4 involves the nucleophilicattack of the carboxylate anion as evidenced by the accumulation and the trapping of the anhydride intermediate. Moreover, the general acid catalysis by the metal-bound water in the expulsion of the amine leaving group is discovered as a novel catalytic role for the Lewis acid catalysis by metal ions in organic reactions