Diversity-oriented synthesis of spiro-oxindole-based 2,5-dihydropyrroles via three-component cycloadditions and evaluation on their cytotoxicity
作者:Wei Tan、Xiao-Tong Zhu、Shu Zhang、Gui-Juan Xing、Ren-Yi Zhu、Feng Shi
DOI:10.1039/c3ra40874d
日期:——
The construction of a spiro-oxindole-based 2,5-dihydropyrrole scaffold with potential bioactivity has been established via an efficient three-component reaction of isatin, amino-ester and alkyne. This protocol represents the first 1,3-dipolar cycloaddition of electron-deficient alkynes with isatin-derived azomethine ylides, providing an easy access to spiro-oxindole-based 2,5-dihydropyrroles with structural diversity in high yields (up to 99%). In addition, the bioscreen of these new spiro-dihydropyrroles has led to the finding of sixteen compounds with promising cytotoxicity to MCF-7 cells.
通过异吲哚酮、氨基酯和炔的三组分反应,建立了具有潜在生物活性的螺-羟吲哚基-2,5-二氢吡咯骨架。该方法首次实现了缺电子炔烃与异吲哚酮衍生的偶氮亚甲基叶立德的1,3-偶极环加成反应,为高收率(高达99%)获得结构多样的螺-羟吲哚基-2,5-二氢吡咯提供了一条简便途径。此外,对这些新型螺-二氢吡咯的生物筛选发现了十六个化合物对MCF-7细胞显示出有前景的细胞毒性。