作者:Asish R. Das、Gargi Pal、Pranabes Bhattacharyya、Arnab K. Ghosh、Debasri Mukherjee、Debasish Bandyopadhyay
DOI:10.1016/j.tetlet.2012.10.057
日期:2012.12
A series of novel coumarinyl 1,4-benzodioxanes were successfully synthesized from electronically diverse 2-[(o-iodophenoxy)methyl]oxiranes and different positional isomers of hydroxycoumarin via one-pot tandem nucleophilic displacement and copper-mediated intramolecular C–O coupling reaction using CuI and 1,10-phenanthroline as the efficient catalytic system. All the compounds were characterized by
通过一锅串联亲核取代和铜介导的分子内C-O偶联反应,成功地从电子上不同的2-[((邻-碘苯氧基)甲基]氧杂环戊烷和羟基香豆素的不同位置异构体中合成了一系列新型香豆素基1,4-苯并二恶烷使用CuI和1,10-菲咯啉作为高效催化体系。所有化合物均通过1 H,13 C NMR,IR,HRMS光谱进行表征,并且一组新近合成的化合物以系统的剂量依赖性方式提供了显着的体外游离羟基自由基清除活性,这表明它们具有出色的生物学潜力。