作者:Yuka Noguchi、Rikako Takeda、Keisuke Suzuki、Ken Ohmori
DOI:10.1021/acs.orglett.8b00873
日期:2018.5.18
The first total synthesis of selligueain A (4), a plant-derived sweet polyphenol, has been achieved. The key step was the de novo synthetic approach to the selectively protected epiafzelechin unit 10, which was divergently converted to three flavan units 7, 8, and 9. These components were combined by an orthogonal activation and annulation method, enabling assembly of the characteristic trimeric structure
已经实现了植物来源的甜味多酚-雪红蛋白A(4)的第一个全合成。的关键步骤是从头合成的方法来选择性保护epiafzelechin单元10,将其转换发散至三个黄烷单元7,8,和9。这些成分通过正交活化和环化方法结合在一起,从而能够组装具有单黄酮键和双黄酮键的特征性三聚体结构。