S-Aryl-L-cysteine S,S-dioxides: design, synthesis, and evaluation of a new class of inhibitors of kynureninase
作者:Rajesh K. Dua、Ethan W. Taylor、Robert S. Phillips
DOI:10.1021/ja00057a007
日期:1993.2
The design, preparation, and evaluation of S-aryl-L-cysteine S,S-dioxides, a new class of potent competitive inhibitors of kynureninase from Pseudomonas fluorescens, are described. The most potent of these compounds, S-(2-aminophenyl)-L-cysteine S,S-dioxide, has a K i value of 70 nM. These analogues form prominent visible absorption peaks at 500 nm, assigned to quinonoid intermediates, when bound to
描述了 S-芳基-L-半胱氨酸 S,S-二氧化物的设计、制备和评估,这是一类新的来自荧光假单胞菌的犬尿氨酸酶的有效竞争抑制剂。这些化合物中最有效的 S-(2-氨基苯基)-L-半胱氨酸 S,S-二氧化物的 K i 值为 70 nM。当与犬尿氨酸酶结合时,这些类似物在 500 nm 处形成显着的可见吸收峰,分配给醌类中间体。用 S-(2-氨基苯基)-L-半胱氨酸 S,S-二氧化物滴定犬尿氨酸酶表明 1 mol 抑制剂与每个亚基中的 5'-磷酸吡哆醛结合