Design, synthesis and biological activity of novel substituted 3-benzoic acid derivatives as MtDHFR inhibitors
作者:Thales Kronenberger、Glaucio Monteiro Ferreira、Alfredo Danilo Ferreira de Souza、Soraya da Silva Santos、Antti Poso、João Augusto Ribeiro、Maurício Temotheo Tavares、Fernando Rogério Pavan、Gustavo Henrique Goulart Trossini、Marcio Vinícius Bertacine Dias、Roberto Parise-Filho
DOI:10.1016/j.bmc.2020.115600
日期:2020.8
analogue development by bioisosterism/retro-bioisosterism, which resulted in 20 new substituted 3-benzoic acid derivatives. Compounds were active against MtDHFR, with IC50 values ranging from 7 to 40 μM, where compound 4e not only had the best inhibitory activity (IC50 = 7 μM), but also was 71-fold more active than the original fragment MB872. The 4e inhibition kinetics indicated an uncompetitive mechanism
结核分枝杆菌的二氢叶酸还原酶(Mt DHFR)具有很高的未被开发的潜力,因为它对病原体的生存很重要,因此成为抗结核新药(TB)的靶标。初步研究已获得了与Mt DHFR亲和力低的片段状分子,这些分子可能成为先导化合物。考虑到这一点,片段MB872被用作通过生物等位基因/反生物等位基因发展类似物的原型,其产生了20个新的取代的3-苯甲酸衍生物。化合物具有抗Mt DHFR的活性,IC 50值为7至40μM,其中化合物4e不仅具有最佳的抑制活性(IC 50 = 7μM),而且活性比原始片段MB872高71倍。在图4e抑制动力学表示的无竞争的机制,这是由这表明,这些化合物可以从基板与竞争性抑制剂访问一个独立的backpocket分子建模支持。因此,基于这些结果,取代的3-苯甲酸衍生物具有被开发为新型的Mt DHFR抑制剂以及抗TB剂的强大潜力。