Synthesis of 1,2,3-triazole linked 4(3H)-Quinazolinones as potent antibacterial agents against multidrug-resistant Staphylococcus aureus
作者:Srikanth Gatadi、Jitendra Gour、Manjulika Shukla、Grace Kaul、Swetarka Das、Arunava Dasgupta、Satyaveni Malasala、Ramya Sri Borra、Y.V. Madhavi、Sidharth Chopra、Srinivas Nanduri
DOI:10.1016/j.ejmech.2018.08.070
日期:2018.9
development of new antibacterial agents acting via novel mechanisms to overcome this pressing issue. In this context, a number of 1,2,3-triazole linked 4(3H)-quinazolinone derivatives were designed and synthesized as potent antibacterial agents. When evaluated against ESKAP pathogen panel, compounds 7a, 7b, 7c, 7e, 7f, 7g, 7h, 7i, 9a, 9c, 9d and 9e exhibited significantly selective inhibitory activities towards
耐甲氧西林和万古霉素的金黄色葡萄球菌感染正在引起全球健康问题,导致发病率和死亡率增加。耐药性的持续增加强调了对发现和开发通过新颖机制起作用的新型抗菌剂以克服这一紧迫问题的需求。在这种情况下,许多1,2,3-三唑连接的4(3 H)-喹唑啉酮衍生物被设计并合成为有效的抗菌剂。当针对ESKAP病原体评估时,化合物7a,7b,7c,7e,7f,7g,7h,7i,9a,9c,9d和9e对金黄色葡萄球菌具有明显的选择性抑制活性。(MIC = 0.5-4 μ克/毫升)。为了理解和证实这些化合物的特异性,结合亚致死浓度的多粘菌素B九肽(PMBN)对化合物7a和9a进行了针对大肠杆菌和鲍曼不动杆菌的测试,发现它们是无活性的。这清楚地表明,这些化合物对金黄色葡萄球菌具有特定和有效的活性,并且对革兰氏阴性病原体没有活性。令人鼓舞的是,还发现这些化合物对Vero细胞无毒,并显示出良好的选择性指数(SI = 40