Evolution of a strategy for total synthesis of the marine fungal alkaloid (+/-)-communesin F

J Org Chem. 2010 Apr 16;75(8):2667-80. doi: 10.1021/jo100339k.

Abstract

A new synthetic strategy for construction of the heptacyclic marine fungal alkaloid (+/-)-communesin F has been devised. Key reactions include an intramolecular Heck cyclization of a tetrasubstituted alkene to generate a tetracyclic enamide bearing one of the quaternary carbon centers (C7) of the alkaloid, an intramolecular reductive cyclization of an N-Boc aniline onto the oxindole moiety to form a pentacyclic framework containing the southern aminal, a stereoselective N-Boc-lactam enolate C-allylation to introduce the second quaternary carbon center (C8), and an azide reduction/N-Boc-lactam-opening cascade leading to the northern aminal.

Publication types

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

MeSH terms

  • Alkaloids / chemical synthesis*
  • Alkaloids / chemistry
  • Cyclization
  • Fungi / chemistry*
  • Heterocyclic Compounds, 4 or More Rings / chemical synthesis*
  • Heterocyclic Compounds, 4 or More Rings / chemistry
  • Oceans and Seas
  • Stereoisomerism
  • Substrate Specificity

Substances

  • Alkaloids
  • Heterocyclic Compounds, 4 or More Rings
  • communesin F