Enantioselective sulfoxide-directed preparation of 1,2-diols from oxalic compounds: formal synthesis of the 10-membered lactone core of ascidiatrienolides and didemnilactones
作者:Irene Izzo、Robin Crumbie、Guy Solladié、Gilles Hanquet
DOI:10.1016/j.tetasy.2005.01.050
日期:2005.4
synthesis of diene 17, which is available in both possible absolute configurations is described. This diene constitutes the key intermediate of a previous synthesis of the 10-membered lactone core of the marine natural products ascidiatrienolides and didemnilactones. This intermediate is available via two successive highly diastereoselective sulfoxide-directed reductions of oxalic diamide 18.
描述了在两种可能的绝对构型中均可用的二烯17的合成。该二烯构成了海洋天然产物菊苣三烯内酯和双二内酯的10元内酯核心先前合成的关键中间体。该中间体可通过草酸二酰胺18的两个连续的高度非对映选择性亚砜导向的还原反应获得。