Pyrrolizidine Alkaloids by Intramolecular Palladium-Catalysed Allylic Alkylation: Synthesis of (±)-Isoretronecanol
作者:Sébastien Lemaire、Giuliano Giambastiani、Guillaume Prestat、Giovanni Poli
DOI:10.1002/ejoc.200400135
日期:2004.7
An efficient and stereoconvergent approach to 3-substituted hexahydroindol-2-one derivatives by palladium-catalysed intramolecular allylicalkylation has been developed. Subsequently, the straightforward conversion of the hexahydroindol-2-one 7d into the alkaloid (±)-isoretronecanol has been performed. The synthesis entails 11 steps starting from 1,3-cyclohexadiene, affording the final target in a