Enantioselective synthesis of natural (−)-tochuinyl acetate, (−)-dihydrotochuinyl acetate and (+)-β-cuparenone using both enantiomers of the same building block
作者:Samir Acherar、Gérard Audran、Fabrice Cecchin、Honoré Monti
DOI:10.1016/j.tet.2004.05.037
日期:2004.7
The first enantioselective synthesis of tochuinyl acetate and dihydrotochuinyl acetate, two natural marine products isolated from Tochuina tetraquetra and Gersemia rubiformis, has been achieved starting from an enantiopure building block. The key feature of the present synthesis is complete control of two vicinal quaternary stereogenic centers present in the natural products and elucidation of their
从对映体纯净的结构单元开始,实现了乙酸甲苯酯和乙酸二氢甲苯酯的首次对映体选择性合成,这两种天然水产品是从四叶草(Tochuina tetraquetra)和红叶Gersemia分离得到的。本合成的关键特征是完全控制天然产物中存在的两个邻近的季生立体中心,并阐明了它们的绝对立体化学,这在以前是未知的。此外,从相同构件的对映异构体开始,所应用的方法为天然(R)-(+)-β-cuparenone提供了一种新方法。