Diversity oriented multi-component reaction (DOS–MCR) approach to access natural product analogues: regio- and chemo-selective synthesis of polyheterocyclic scaffolds <i>via</i> one-pot cascade reactions
作者:Lakshmanan Palanivel、Vasuki Gnanasambandam
DOI:10.1039/d0ob00368a
日期:——
pyrrolo(3,4-d)pyridine-13-carboxamide, and furo-pyrrolo(1,2-a)imidazole-4-carboxamide fused polyheterocyclic hybrid scaffolds and a furo(2,3-b)furan core have been accessed via one-pot three-component reaction by exploiting the build/couple/pair strategy of diversity oriented synthesis (DOS). This protocol is metal free, has a good substrate scope and affords products with good to excellent yields and regio-
骨架复杂多样的氮杂-环戊二(cd)二茚,吡咯并(3,4-d)吡啶-13-羧酰胺和呋喃-吡咯并(1,2-a)咪唑-4-羧酰胺融合的多杂环杂合支架和呋喃通过利用面向多样性的合成(DOS)的构建/耦合/配对策略,通过一锅三组分反应可以访问2,3-b)呋喃核。该方案不含金属,具有良好的底物范围,并提供具有良好或优异的产率以及区域和化学选择性的产品。在这项研究中获得的杂环骨架模拟天然产物,如紫杉胺,香茅胺和前高效酚。