Microwave-assisted synthesis and antimicrobial activity of some imidazo[2,1-b][1,3,4]thiadiazole derivatives
作者:Sharad Dhepe、Sujeet Kumar、R. Vinayakumar、Sureshbabu A. Ramareddy、Subhas S. Karki
DOI:10.1007/s00044-011-9671-8
日期:2012.8
Mass spectroscopy. Antibacterial and antifungal activity was performed using cup plate method against Staphylococcus aureus, Klebsiella, and Candida albicans microorganisms. 2-(4-nitro benzyl)-6-(4-bromo phenyl)imidazo[2,1-b][1,3,4]thiadiazole (4Ce) was the only derivative which showed activity against Klebsiella at low micromolar concentration (5 μg/ml) with moderate zone of inhibition. And 2-(4-nitro
开发了一种简单有效的方法,用于在微波(MW)活化下使用2-氨基-5-取代-1合成2,6-二取代-咪唑并[2,1-b] [1,3,4]噻二唑, 3,4-噻二唑和适当的溴代酮为原料。所有反应都证明了MW反应的好处:操作方便,反应时间短,产率高。通过IR,NMR和质谱对所有衍生物进行表征。使用杯板法对金黄色葡萄球菌,克雷伯菌和白色念珠菌微生物进行抗菌和抗真菌活性。2-(4-硝基苄基)-6-(4-溴苯基)咪唑并[2,1-b] [1,3,4]噻二唑(4Ce)是唯一对克雷伯菌具有活性的衍生物在低微摩尔浓度(5μg/ ml)下具有中等抑制区域。而2-(4-硝基苄基)-6-(4-氟苯基)咪唑并[2,1-b] [1,3,4]噻二唑(4Cf)作为最有效的抗真菌活性衍生物,相对于50μg/ ml与标准氟康唑比较的白色念珠菌。