Synthesis and evaluation of new quinazolin-4(3H)-one derivatives as potent antibacterial agents against multidrug resistant Staphylococcus aureus and Mycobacterium tuberculosis
作者:Srikanth Gatadi、Jitendra Gour、Manjulika Shukla、Grace Kaul、Arunava Dasgupta、Y.V. Madhavi、Sidharth Chopra、Srinivas Nanduri
DOI:10.1016/j.ejmech.2019.04.067
日期:2019.8
demonstrated equipotent MIC against multiple drug-resistant strains of S. aureus including VRSA, concentration dependent bactericidal activity against S. aureus and synergized with FDA approved drugs. Moreover, compound 4′c exhibited more potent activity in reducing the biofilm and exhibited a PAE of ∼2 h at 10X MIC which is comparable to levofloxacin and vancomycin. In vivo efficacy of 4'c in murine neutropenic
金黄色葡萄球菌和结核分枝杆菌是导致全球范围内严重影响医院和社区的严重感染的主要病原体。几十年来,这些病原体已经对多种抗生素产生了抗药性,从而极大地影响了发病率和死亡率。因此,这些顽固性病原体是最强大的微生物病原体之一,国际医疗机构已要求其积极鉴定和开发用于化学干预的新型抗菌剂。在我们目前的工作中,一系列新的喹唑啉4(3 H设计,合成并评估了一种衍生物对ESKAP病原体和致病性分枝杆菌的抗菌活性。该实验表明4'c,4'e,4'f和4'H显示选择性的和有效的抑制活性对金黄色葡萄球菌与MIC值范围为0.03-0.25 μ克/毫升。此外,化合物4'c和4'e被认为是良性到Vero细胞(CC 50 => 5 μ克/毫升)并显示分别有前途的选择性指数(SI)> 167和> 83.4。此外,4'c和4'e针对多重耐药菌株表现出等效的MIC的金黄色葡萄球菌,包括VRSA,针对浓度依赖性杀菌活性的金黄