Total Synthesis of <i>seco</i>-Plakortolide E and (−)-<i>ent</i>-Plakortolide I: Absolute Configurational Revision of Natural Plakortolide I
作者:Bogdan Barnych、Jean-Michel Vatèle
DOI:10.1021/ol203185f
日期:2012.1.20
A first total synthesis of (−)-ent-plakortolide I and seco-plakortolide E was accomplished from (S)-2-methylglycidol. The relevant key reactions involve a diastereoselective Mukaiyama aldol reaction, a regioselective hydroperoxysilylation, and elaboration of the 1,2-dioxane ring by intramolecular Michael addition of a hydroperoxide group to a butenolide. This synthesis allowed the revision of the absolute
( - ) -的第一全合成ENT -plakortolide I和开环-plakortolide E的从(完成小号)-2- methylglycidol。相关的关键反应包括非对映选择性的Mukaiyama羟醛反应,区域选择性的氢过氧化甲硅烷基化,以及通过分子内迈克尔将氢过氧化物基团加到丁烯酸内酯来精制1,2-二恶烷环。该合成允许对普拉托利特I的绝对构型进行修改,并对普拉托利特E进行结构上的修改。