<i>De Novo</i> Design of Non-coordinating Indolones as Potential Inhibitors for Lanosterol 14-α-Demethylase (CYP51)
作者:Rodolfo González-Chávez、Roberto Martínez、María Eugenia Torre-Bouscoulet、Marco Gallo、Marco Martín González-Chávez
DOI:10.1248/cpb.c13-00003
日期:——
The development of antifungal drugs that inhibit lanosterol 14-α-demethylase (CYP51) via non-covalent ligand interactions is a strategy that is gaining importance. A series of novel tetraindol-4-one derivatives with 1- and 2-(2,4-substituted phenyl) side chains were designed and synthesized based on the structure of CYP51 and fluconazole. The antifungal activities of these derivatives against eight human pathogenic filamentous fungi and yeast strains were evaluated in vitro by measuring the minimal inhibitory concentrations. Nearly all tested compounds 8a–g displayed activity against Candida tropicalis, Candida guilliermondii and Candida parapsilosis with a minimum inhibitory concentration (MIC) value until 8 µg mL−1, on the other hand compounds 7a–g showed activity against Aspergillus fumigatus with a MIC value of 31.25 µg mL−1. A molecular modeling study of the binding interactions between compounds 6, 7d, 8g and the active site of MtCYP51 was conducted based on the computational docking results.
通过非共价配体相互作用抑制羊毛甾醇14α-去甲基酶(CYP51)的抗真菌药物的开发策略正变得越来越重要。基于CYP51和氟康唑的结构,设计并合成了一系列含有1-和2-(2,4-取代苯基)侧链的新型四吲哚-4-酮衍生物。通过测定最小抑制浓度,对这些衍生物针对八种人类病原性丝状真菌和酵母菌株的体外抗真菌活性进行了评估。几乎所有测试的化合物8a-g都对热带念珠菌、季也蒙念珠菌和副念珠菌显示活性,最小抑制浓度(MIC)值高达8μg mL^-1,另一方面,化合物7a-g对烟曲霉显示活性,MIC值为31.25μg mL^-1。基于计算对接结果,进行了化合物6、7d、8g与MtCYP51活性位点的结合相互作用的分子建模研究。