Nature-inspired stereospecific total synthesis of P-(+)-dispegatrine and four other monomeric sarpagine indole alkaloids

Angew Chem Int Ed Engl. 2012 Nov 19;51(47):11762-5. doi: 10.1002/anie.201206015. Epub 2012 Oct 16.

Abstract

Non-phenolic oxidative coupling: The first total synthesis of the C-2 symmetric indole alkaloid P-(+)-dispegatrine (1) is reported. A late-stage thallium(III)acetate mediated intermolecular oxidative coupling was employed to construct the C(9)-C(9′) bond with complete regio- and stereocontrol. The exclusive formation of a single atropodiastereomer 12 in this critical step arises due to internal asymmetric induction, as planned. In addition, the first total synthesis of four other monomeric sarpagine indole alkaloids is described.

Publication types

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

MeSH terms

  • Alkaloids / chemical synthesis*
  • Alkaloids / chemistry
  • Biomimetic Materials / chemistry
  • Indole Alkaloids / chemical synthesis*
  • Indole Alkaloids / chemistry
  • Models, Molecular
  • Molecular Conformation
  • Stereoisomerism

Substances

  • Alkaloids
  • Indole Alkaloids
  • dispegatrine
  • sarpagine