抗疟疾的吡啶并[1,2- a ]苯并咪唑类化合物:铅优化,寄生虫生命周期阶段概况,机理评估,杀伤动力学和在小鼠模型中的体内口服功效
摘要:
对最近鉴定出的吡啶并[1,2- a ]苯并咪唑(PBI)抗疟药的进一步结构-活性关系(SAR)研究已导致鉴定出有效的,代谢稳定的化合物,从而在伯氏疟原虫小鼠模型中具有改善的体内口服功效以及针对寄生虫肝脏和配子细胞阶段的额外活性,使其成为临床前开发的潜在候选者。抑制hezozoin的形成可能有助于其作用机理。
抗疟疾的吡啶并[1,2- a ]苯并咪唑类化合物:铅优化,寄生虫生命周期阶段概况,机理评估,杀伤动力学和在小鼠模型中的体内口服功效
摘要:
对最近鉴定出的吡啶并[1,2- a ]苯并咪唑(PBI)抗疟药的进一步结构-活性关系(SAR)研究已导致鉴定出有效的,代谢稳定的化合物,从而在伯氏疟原虫小鼠模型中具有改善的体内口服功效以及针对寄生虫肝脏和配子细胞阶段的额外活性,使其成为临床前开发的潜在候选者。抑制hezozoin的形成可能有助于其作用机理。
Development of benzimidazole derivatives to inhibit HIV-1 replication through protecting APOBEC3G protein
作者:Ting Pan、Xin He、Bing Chen、Hui Chen、Guannan Geng、Haihua Luo、Hui Zhang、Chuan Bai
DOI:10.1016/j.ejmech.2015.03.050
日期:2015.5
Human APOBEC3G (apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G, MG) is a potent restriction factor against human immunodeficiency virus type 1 (HIV-1) by inducing hypermutation of G to A in viral genome after its incorporation into virions. HIV-1 Vif (Virion Infectivity Factor) counteracts A3G by inducing ubiquitination and proteasomal degradation of MG protein. Vif-A3G axis therefore is a promising therapeutic target of HIV-1. Here we report the screening, synthesis and SAR studies of benzimidazole derivatives as potent inhibitors against HIV-1 replication via protecting MG protein. Based on the steep SAR of the benzimidazole scaffold, we identified compound 14 and 26 which provided the best potency, with IC50 values of 3.45 nM and 58.03 nM respectively in the anti-HIV-1 replication assay in H9 cells. Compound 14 and 26 also afforded protective effects on MG protein level. Both compounds have been proved to be safe in acute toxicological studies. Taken together, we suggest that these two benzimidazole derivatives can be further developed as a new category of anti-HIV-1 leads. (C) 2015 Elsevier Masson SAS. All rights reserved.