Development and Scope of the Arene-Fused Domino Michael/Mannich Reaction: Application to the Total Syntheses of Aspidosperma Alkaloids (-)-Aspidospermidine, (-)-Tabersonine, and (-)-Vincadifformine

J Org Chem. 2017 Jan 6;82(1):521-531. doi: 10.1021/acs.joc.6b02551. Epub 2016 Dec 12.

Abstract

The development and application of the arene-fused domino Michael/Mannich route to the tetrahydrocarbazole (ABE) core of Aspidosperma alkaloids is described. The scope of this novel transformation was studied in terms of the nucleophilic component (i.e., N-sulfinyl metallodienamine) and the electrophilic component (i.e., Michael acceptor). The successful application of this methodology toward the concise total syntheses of classical indole alkaloids (-)-aspidospermidine, (-)-tabersonine, and (-)-vincadifformine in 10-11 steps, respectively, is also discussed.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alkaloids / chemical synthesis*
  • Alkaloids / chemistry
  • Indole Alkaloids / chemical synthesis*
  • Indole Alkaloids / chemistry
  • Molecular Structure
  • Quinolines / chemical synthesis*
  • Quinolines / chemistry
  • Stereoisomerism

Substances

  • Alkaloids
  • Indole Alkaloids
  • Quinolines
  • aspidospermidine
  • vincadifformine
  • tabersonine