Microwave-Assisted Rapid and Efficient Synthesis of New Series of Chromene-Based 1,2,4-Oxadiazole Derivatives and Evaluation of Antibacterial Activity with Molecular Docking Investigation
作者:Nilofar Baral、Seetaram Mohapatra、Bishnu Prasad Raiguru、Nilima Priyadarsini Mishra、Pravati Panda、Sabita Nayak、Satyendra Kumar Pandey、P. Sudhir Kumar、Chita Ranjan Sahoo
DOI:10.1002/jhet.3430
日期:2019.2
This methodology is successfully applied to synthesize 18 numbers of new 2H‐chromene‐substituted 1,2,4‐oxadiazole derivatives in good to high yields. The structure of the product was ascertained by X‐ray crystallographic analysis. All the synthesized compounds were evaluated for their in vitro antibacterial activity against two different pathogenic bacterial strains, that is, Escherichia coli (MTCC614)
在常规油浴加热和微波辐射下,由多种基于苯并a的a肟与可轻易获得的羧酸合成了一系列新的基于苯并chrome的恶二唑衍生物。在DMF中结合微波加热使用市售的EDCI和HOBt作为偶联剂,可快速提高产品1,2,4-恶二唑的收率和纯度。该方法已成功应用于以高到高收率合成18种新的2 H-色烯取代的1,2,4-恶二唑衍生物。产品结构通过X射线晶体学分析确定。对所有合成的化合物进行体外评估对两种不同的病原细菌菌株(即大肠杆菌(MTCC614)和肺炎克雷伯菌)的抗菌活性。体外抗菌试验获得的结果表明,6g和6h表现出接近标准药物庆大霉素的良好抗菌活性。分子对接研究表明,化合物6g和6h与大肠杆菌的细菌目标DNA促旋酶发生氢键相互作用。