Synthesis and Enzymic Evaluation of 4-Mercapto-6-oxo-1,4-azaphosphinane-2-carboxylic Acid 4-Oxide as an Inhibitor of Mammalian Dihydroorotase
作者:Michael K. Manthey、Danny T. C. Huang、William A. Bubb、Richard I. Christopherson
DOI:10.1021/jm970814z
日期:1998.11.1
The design, synthesis, and enzymic evaluation of cis- and trans-4-mercapto-6-oxo-1,4-azaphosphinane-2-carboxylic acid 4-oxide 5 against mammalian dihydroorotase is presented. The design strategy for 5 was based on the strong affinity of phosphinothioic acids for zinc and that 5 also resembles the postulated tetrahedral transition state for the enzyme-catalyzed reaction. The synthesis of 5 utilized
介绍了针对哺乳动物二氢乳清酶的顺式和反式-4-巯基-6-氧代-1,4-氮杂膦烷-2-羧酸4-氧化物5的设计,合成和酶学评估。5的设计策略基于硫代膦酸对锌的强亲和力,并且5也类似于假定的四面体过渡态用于酶催化反应。5的合成在4-羟基-6-氧代-1、4-氮杂膦烷-2-羧酸4-氧化物4上使用了新颖的保护/脱保护序列,随后引入α-苯基苯甲硫醇并进行彻底的脱保护得到5 4的总产率为40%。5的两种异构体作为哺乳动物二氢乳清酶的抑制剂的活性略高于母体次膦酸4的活性。