Synthesis and biological evaluation of new imidazo[2,1-b][1,3,4]thiadiazole-benzimidazole derivatives
作者:Jurupula Ramprasad、Nagabhushana Nayak、Udayakumar Dalimba、Perumal Yogeeswari、Dharmarajan Sriram、S.K. Peethambar、Rajeshwara Achur、H. S. Santosh Kumar
DOI:10.1016/j.ejmech.2015.03.024
日期:2015.5
In this report, we describe the synthesis and biological evaluation of a new series of 2-(imidazo[2,1-b][1,3,4]thiadiazol-5-yl)-1H-benzimidazole derivatives (5a-ac). The molecules were analyzed by 1H NMR, 13C NMR, mass spectral and elemental data. The structure of one of the pre-final compounds, 6-(4-methoxyphenyl)-2-(4-methylphenyl)imidazo[2,1-b][1,3,4]thiadiazole-5-carbaldehyde (4d) and that of a
在本报告中,我们描述了一系列新的2-(咪唑并[2,1- b ] [1,3,4]噻二唑-5-基)-1 H-苯并咪唑衍生物(5a-ac)。通过1 H NMR,13 C NMR,质谱和元素数据分析分子。最终化合物之一的结构为6-(4-甲氧基苯基)-2-(4-甲基苯基)咪唑并[2,1- b ] [1,3,4]噻二唑-5-甲醛(4d)和目标化合物的2- [2-甲基-6-(4-甲基苯基)咪唑并[2,1- b ] [1,3,4]噻二唑-5-基] -1 H-苯并咪唑(5aa)由单晶XRD研究确认。筛选所有目标化合物的针对结核分枝杆菌H37Rv菌株的体外抗结核活性。29种化合物中的7种(5c,5d,5l,5p,5r,5z和5aa)显示出有效的抗结核活性,MIC为3.125μg/ mL。咪唑并[2,1- b ]中的对位取代苯基(对甲苯基或对氯苯基)] [1,3,4]噻二唑环和/或苯并咪唑环中的氯基会增强抗结核