Synthesis of indole alkaloid (−)-corynantheidol and formal synthesis of (−)-corynantheidine via one-pot asymmetric azaelectrocyclization
作者:Yanwu Li、Toyoharu Kobayashi、Shigeo Katsumura
DOI:10.1016/j.tetlet.2009.05.045
日期:2009.8
The highly efficient asymmetric total synthesis of indolealkaloid, (−)-corynantheidol, containing a 2,4,5-trisubstituted piperidine core, was achieved using a new version of the one-pot azaelectrocyclization reaction. The formal synthesis of (−)-corynantheidine was also achieved using the common synthetic intermediate for these corynantheines.
The stereocontrolled synthetic procedure for the preparation of 2,4,5-trisubstituted 2,5-chiral 1,2,5,6-tetrahydropyridines was established using a one-pot asymmetric azaelectrocyclization protocol; the generality of this protocol was demonstrated by synthesizing the title compounds with various aryl and alkenyl substituents at the C-2 position.