作者:Rakeshwar B. Chhor、Bernd Nosse、Sebastian Sörgel、Claudius Böhm、Michael Seitz、Oliver Reiser
DOI:10.1002/chem.200390019
日期:2003.1.3
development of a new method for the enantioselective synthesis of disubstituted gamma-butyrolactones is reported. Based on this strategy, the total synthesis of three paraconic acids, that is (-)-roccellaric acid, (-)-nephrosteranic acid and (-)-protopraesorediosic acid, and the formal total synthesis of (-)-methylenolactocin and (-)-protolichesterinic acid is described, which are important because of their
据报道,开发了一种对映选择性合成双取代的γ-丁内酯的新方法。在此策略的基础上,可以合成(-)-二十二碳六烯酸,(-)-肾甾酸和(-)-戊二酸二十二碳三酸,以及(-)-甲基烯醇内酯和(- )-原脂白蛋白酸,其具有重要的抗生素和抗肿瘤特性,因此非常重要。合成的关键步骤是铜(I)催化的呋喃的不对称环丙烷化,高度非对映选择性的樱井烯丙基化,路易斯酸或路易斯碱催化的逆向醇/内酯化级联反应,以及钌(II)催化的分子间交叉易位反应。