Identification of Trypanosoma brucei leucyl-tRNA synthetase inhibitors by pharmacophore- and docking-based virtual screening and synthesis
作者:Yaxue Zhao、Qing Wang、Qingqing Meng、Dazhong Ding、Huaiyu Yang、Guangwei Gao、Dawei Li、Weiliang Zhu、Huchen Zhou
DOI:10.1016/j.bmc.2011.12.035
日期:2012.2
Human African trypanosomiasis (HAT), caused by the protozoan parasite Trypanosoma brucei, is a neglected fatal disease. Leucyl-tRNA synthetase (LeuRS), which has been successfully applied in the development of antifungal agent, represents a potential antiprotozoal drug target. In this study, a 3D model of T. brucei LeuRS (TbLeuRS) synthetic active site was constructed and subjected to virtual screening using a combination of pharmacophore- and docking-based methods. A new 2-pyrrolinone scaffold was discovered and the structure-activity relationship (SAR) studies aided by the docking model and organic synthesis were carried out. Compounds with various substituents on R-1, R-2 and R-3 were synthesized and their SAR was discussed. (C) 2012 Elsevier Ltd. All rights reserved.