Chiral Holmium Complex-Catalyzed Synthesis of Hydrocarbazole from Siloxyvinylindole and Its Application to the Enantioselective Total Synthesis of (-)-Minovincine

J Org Chem. 2015 Sep 4;80(17):8859-67. doi: 10.1021/acs.joc.5b01393. Epub 2015 Aug 19.

Abstract

The catalytic and enantioselective total synthesis of (-)-minovincine has been accomplished. The key highly substituted hydrocarbazole derivative was obtained by an asymmetric Diels-Alder reaction of siloxyvinylindole catalyzed by 0.5 mol % of a chiral holmium complex. The Diels-Alder adduct was converted to a tetracyclic intermediate in a one-pot procedure. No waste stereoisomers were produced throughout the entire total synthesis.

Publication types

  • Research Support, Non-U.S. Gov't