hydrophobic/hydrophilic amide substituent at position 2 (Cys) favors inhibition of B and C. Heterocyclic substituents at position 1, only, produce catalytic analogues for A, whereas less bulky and more flexible hydrophobic/hydrophilic substituents, at positions 1 or 3, lead to effective substrates with C. When such substituents were introduced simultaneously at positions 1 and 3, the analogues produced have no
谷胱甘肽(GSH)结构指导的三肽类似物是通过固相技术设计和合成的,通过RP和/或GF柱色谱法纯化(≥95%),以鉴定与GSH相比具有相似或更高结合和催化效率的那些涉及MDR参与的人类GSTP1-1同工酶,并可以区分多态性人类GSTP1基因位点的同基因表达产物,分别称为hGSTP1 * A(Ile 104 / Ala 113),hGSTP1 * B(Val 104 / Ala 113)和hGSTP1 * C(Val 104 / Val 113)。类似物具有单个氨基酸改变以及不止一个位置的改变。一些类似物表现出显着的同工酶选择性,催化结合到A(I,II,IV,XII),C(V和XVI),A和C(III,VII,XIV)或所有三个同工酶(XV)。)。GSH第1或2位的杂环取代基有利于抑制A,而第2位(Cys)的较小疏水/亲水酰胺取代基有利于抑制B和C。仅在1位的杂环取代基可生成A的催化类似物,相
Discovery of Glutathione S-Transferase Inhibitors Using Dynamic Combinatorial Chemistry
作者:Baolu Shi、Ross Stevenson、Dominic J. Campopiano、Michael F. Greaney
DOI:10.1021/ja058049y
日期:2006.7.1
Protein-directed dynamiccombinatorialchemistry (DCC) relies on reversible chemical reactions that can function under the near-physiological conditions required by the biological target. Few classes of reaction have so far proven effective at generating dynamiccombinatorial libraries (DCLs) under such constraints. In this study, we establish the conjugate addition of thiols to enones as a reaction