Identification of substituted 3-hydroxy-2-mercaptocyclohex-2-enones as potent inhibitors of human lactate dehydrogenase
作者:Peter S. Dragovich、Benjamin P. Fauber、Jason Boggs、Jinhua Chen、Laura B. Corson、Charles Z. Ding、Charles Eigenbrot、HongXiu Ge、Anthony M. Giannetti、Thomas Hunsaker、Sharada Labadie、Chiho Li、Yichin Liu、Yingchun Liu、Shuguang Ma、Shiva Malek、David Peterson、Keith E. Pitts、Hans E. Purkey、Kirk Robarge、Laurent Salphati、Steve Sideris、Mark Ultsch、Erica VanderPorten、Jing Wang、BinQing Wei、Qing Xu、Ivana Yen、Qin Yue、Huihui Zhang、Xuying Zhang、Aihe Zhou
DOI:10.1016/j.bmcl.2014.06.076
日期:2014.8
A novel class of 3-hydroxy-2-mercaptocyclohex-2-enone-containing inhibitors of human lactate dehydrogenase (LDH) was identified through a high-throughput screening approach. Biochemical and surface plasmon resonance experiments performed with a screening hit (LDHA IC50 = 1.7 mu M) indicated that the compound specifically associated with human LDHA in a manner that required simultaneous binding of the NADH co-factor. Structural variation of this screening hit resulted in significant improvements in LDHA biochemical inhibition activity (best IC50 = 0.18 mu M). Two crystal structures of optimized compounds bound to human LDHA were obtained and explained many of the observed structure-activity relationships. In addition, an optimized inhibitor exhibited good pharmacokinetic properties after oral administration to rats (F = 45%). (C) 2014 Elsevier Ltd. All rights reserved.