Iron-catalyzed aryl-aryl cross coupling route for the synthesis of 1-(2-amino)-phenyl)dibenzo[b,d]furan-2-ol derivatives and their biological evaluation
作者:Barreddi Chiranjeevi、Ganesh Koyyada、S. Prabusreenivasan、Vanaja Kumar、Pombala Sujitha、C. Ganesh Kumar、B. Sridhar、Saida Shaik、Malapaka Chandrasekharam
DOI:10.1039/c3ra43345e
日期:——
Naturally occurring dibenzofuran motifs represent promising lead structures for the development of novel antimycobacterial agents. Prompted by our recent development of cross dehydrogenative coupling using iron catalysis, we extended our strategy to synthesize 14 novel anilinodibenzofuranols and they were explored for anti-tubercular and cytotoxic activities. Consistent with our hypothesis, DBF-3, 14 and 16 exhibited promising activity against two strains (M. tuberculosis H37Rv and the clinical S, H, R, and E resistant isolate), while DBF-13, 18 exhibited selective inhibitory activity only against the clinical S, H, R and E resistant isolate. However, the compounds DBF-4 and DBF-8 showed promising and selective antitumor activity against the tested cancer cell lines.
天然存在的二苯并呋喃结构为开发新型抗分枝杆菌药物提供了有希望的先导结构。受到我们最近开发的使用铁催化的交叉脱氢偶联反应的启发,我们将策略扩展到了合成14种新型苯胺基二苯并呋喃醇,并探索了它们的抗结核和细胞毒性活性。与我们假设一致的是,DBF-3、14和16对两种菌株(结核分枝杆菌H37Rv和临床对S、H、R、E耐药的分离株)表现出显著的活性,而DBF-13、18仅对临床对S、H、R、E耐药的分离株表现出选择性抑制活性。然而,化合物DBF-4和DBF-8显示出对测试的癌细胞系具有显著且选择性的抗肿瘤活性。