Synthesis, trypanocidal activity and docking studies of novel quinoxaline-N-acylhydrazones, designed as cruzain inhibitors candidates
作者:Nelilma C. Romeiro、Gabriela Aguirre、Paola Hernández、Mercedes González、Hugo Cerecetto、Ignacio Aldana、Silvia Pérez-Silanes、Antonio Monge、Eliezer J. Barreiro、Lídia M. Lima
DOI:10.1016/j.bmc.2008.11.065
日期:2009.1
In this paper, we report the structural design, synthesis, trypanocidal activity and docking studies of novel quinoxaline-N-acylhydrazone (NAH) derivatives, planned as cruzain inhibitors candidates, a cysteine protease essential for the survival of Trypanosoma cruzi within the host cell. The salicylaldehyde N-acylhydrazones 7a and 8a presented IC(50) values of the same magnitude order than the standard drug nifurtimox (Nfx), when tested in vitro against epimastigote forms of Trypanosoma cruzi (Tulahuen 2 strain) and were non-toxic at the highest assayed doses rendering selectivity indexes (IC(50) (macrophages)/IC(50) (Trypanosoma cruzi)) of > 25 for 7a and > 20 for 8a, with IC(50) values in macrophages > 400 mu M. (C) 2008 Elsevier Ltd. All rights reserved.