Construction of Eight-Membered Ether Rings by Olefin Geometry-Dependent Internal Alkylation: First Asymmetric Total Syntheses of (+)-3-(<i>E</i>)- and (+)-3-(<i>Z</i>)-Pinnatifidenyne
作者:Hyoungsu Kim、Won Jun Choi、Jaeyoon Jung、Sanghee Kim、Deukjoon Kim
DOI:10.1021/ja035538u
日期:2003.8.1
The first and highly stereoselective asymmetric total syntheses of eight-membered ring ether marine natural products (+)-3-(E)-pinnatifidenyne and (+)-3-(Z)-pinnatifidenyne have been accomplished. Notable features of our syntheses include a novel and efficient construction of oxocene 5 by a highly stereo- and regioselective internal alkylation and direct ketone synthesis of ketone 16 from the alpha-alkyloxy
八元环醚海洋天然产物 (+)-3-(E)-pinnatifidenyne 和 (+)-3-(Z)-pinnatifidenyne 的第一个和高度立体选择性的不对称全合成已经完成。我们合成的显着特征包括通过高度立体和区域选择性的内部烷基化和从 oxocene 5 中的 α-烷氧基酰胺部分直接酮合成酮 16 来构建 oxocene 5。