Synthesis and evaluation of phenylimidazole FabK inhibitors as new Anti-C. Difficile agents
作者:Krissada Norseeda、Fahad Bin Aziz Pavel、Jacob T. Rutherford、Humna N. Meer、Chetna Dureja、Julian G. Hurdle、Kirk E. Hevener、Dianqing Sun
DOI:10.1016/j.bmc.2023.117330
日期:2023.6
antibacterial activity in the low micromolar range. In these studies, we sought to expand our knowledge of the SAR of the phenylimidazole CdFabK inhibitor series while improving the potency of the compounds. Three main series of compounds were synthesized and evaluated based on: 1) pyridine head group modifications including the replacement with a benzothiazole moiety, 2) linker explorations, and 3) phenylimidazole
以前,1-((4-(4-溴苯基)-1 H-咪唑-2-基)甲基)-3-(5-(吡啶-2-基硫基)噻唑-2-基)脲带有对溴研究表明,该取代对艰难梭菌烯酰酰基载体蛋白 (ACP) 还原酶 II 酶 FabK 具有选择性抑制活性。该化合物对Cd FabK 的抑制作用在低微摩尔范围内具有良好的抗菌活性。在这些研究中,我们试图扩大对苯基咪唑Cd FabK 抑制剂系列 SAR 的了解,同时提高化合物的效力。合成并评估了三个主要系列的化合物,基于:1)吡啶头基修饰,包括用苯并噻唑部分取代,2)接头探索,以及3)苯基咪唑尾基修饰。总体而言,在保持全细胞抗菌活性的同时,实现了Cd FabK 抑制的改善。具体地,化合物1-((4-(4-溴苯基) -1H-咪唑-2-基)甲基)-3-(5-((3-(三氟甲基)吡啶-2-基)硫基)噻唑-2 -基)脲、1-((4-(4-溴苯基) -1H-咪唑-2-基)甲基)-3-(6-(三氟甲基)苯并[