作者:Yu-Ting Fang、Chia-Ning Lin、Huan-Ting Wu、Yean-Jang Lee
DOI:10.1002/jccs.200700119
日期:2007.6
Total synthesis of (±)-glyflavanones and glychalcones was accomplished starting from the known 1-(5-hydroxy-7-methoxy-2,2-dimethyl-2H-chromen-6-yl)ethanone (6). A new approach to synthesis of flavanones, based on a high yielding N-benzylcinchoninium salt catalyzed chromane ring forming enantio-selective cyclization process, is described. Also, synthesis of (+)-glyflavanone 1, the natural enantiomer
(±)-glyflavanones 和 glychalcones 的全合成是从已知的 1-(5-hydroxy-7-methoxy-2,2-dimethyl-2H-chromen-6-yl)ethanone (6) 开始的。描述了一种基于高产 N-苄基辛可宁盐催化色烷环形成对映选择性环化过程的黄烷酮合成新方法。此外,天然对映异构体 (+)-glyflavanone 1 的合成是通过外消旋合成中的关键中间体的光学拆分实现的。