Total syntheses of racemic, natural (-) and unnatural (+) glyceollin I

Org Lett. 2008 Nov 6;10(21):5007-10. doi: 10.1021/ol802112r. Epub 2008 Sep 26.

Abstract

The first total syntheses of racemic glyceollin I and its enantiomers are described. A Wittig approach was utilized as an entry to the appropriately substituted isoflav-3-ene so that an osmium tetroxide mediated asymmetric dihydroxylation could be deployed for stereospecific introduction of the 6a-hydroxy group. While using triphenylphosphine hydrobromide, a novel method was found for gently removing MOM from protected phenolic hydroxyl groups present within sensitive systems.

Publication types

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

MeSH terms

  • Biological Products / chemical synthesis*
  • Biological Products / chemistry
  • Molecular Structure
  • Pterocarpans / chemical synthesis*
  • Pterocarpans / chemistry
  • Stereoisomerism

Substances

  • Biological Products
  • Pterocarpans
  • glyceollin