Synthesis and structure of azole-fused indeno[2,1-c]quinolines and their anti-mycobacterial properties
作者:Ram Shankar Upadhayaya、Popat D. Shinde、Aftab Y. Sayyed、Sandip A. Kadam、Amit N. Bawane、Avijit Poddar、Oleksandr Plashkevych、Andras Földesi、Jyoti Chattopadhyaya
DOI:10.1039/c0ob00445f
日期:——
were screened for their cytotoxic effect on mammalian cells (human monocytic cell line U937), which showed that the human cell survival is almost unperturbed (100% survival), except for compound 25, hence these new compounds with new scaffolds have been identified as potent anti-mycobacterials, virtually with no toxicity. Thus these “hit” molecules constitute our important “leads” for further optimization
由我们发现的新型一类构象锁定的茚并[2,1- c ]喹啉类作为抗分枝杆菌药,促使化合物2a和3a(图1; MIC分别<0.39μgmL -1和0.78μgmL -1) )14具有自由旋转的C 2-咪唑基取代基,我们在此描述五环唑稠合的喹啉衍生物4和5的合成,其中我们通过将C2-咪唑基部分融合到相邻的喹啉氮上来限制其旋转,以产生五元稠合的吡咯杂环。通过构象约束来锁定系统灵活性的想法只是为了减少其熵,从而减少其与靶受体结合的总自由能。出的22种不同的唑的稠合茚并[2,1- c ^ ]喹啉衍生物,七种结构上不同的化合物,9,15,17,25,27,28和29,都显示出的79-99%的生长抑制结核分枝杆菌在分枝杆菌H37Rv固定剂量6.25μgmL -1。在第一天单次给药后,使用BACTEC放射测定法在体外连续8/9天评估了这些化合物的功效。其中的9和28这两种化合物在MIC <0.39μgmL -1(分别为0