Collective Total Synthesis of (-)-Lundurines A-C

Org Lett. 2018 Mar 16;20(6):1509-1512. doi: 10.1021/acs.orglett.8b00210. Epub 2018 Mar 8.

Abstract

A collective asymmetric total synthesis of lundurines A-C using l-pyroglutamic acid derived from the chiral pool is described. The key steps include a tandem reductive amination/lactamization sequence to introduce the pyrrolidinone ring, a palladium-catalyzed intramolecular direct C-H vinylation of indole to construct the crucial polyhydroazocine ring, and a Lewis acid promoted formal [3 + 2] cycloaddition/N2 extrusion process to install the polysubstituted cyclopropyl ring.

Publication types

  • Research Support, Non-U.S. Gov't