Toward the Synthesis of Norzoanthamine: Building Carbocyclic Core by a Transannular Michael Reaction Cascade
作者:Haoran Xue、Jiong Yang、Peddabuddi Gopal
DOI:10.1021/ol2024554
日期:2011.10.21
A 12-step synthesis of the ABC carbocyclic core of norzoanthamine is described. It features an organocatalytic asymmetric intramolecular aldolization to set the stereochemistry of the entire molecule, a fragment coupling by selective alkylation of a bis-enolate, and a transannular Michael reaction cascade for rapid and stereoselective synthesis of the polycyclic core.
描述了去甲乙胺的ABC碳环核的12步合成。它具有有机催化不对称分子内缩醛反应,可设定整个分子的立体化学,通过双烯酸酯的选择性烷基化偶联片段,以及跨环迈克尔反应级联,可快速和立体选择性地合成多环核。