Eight-Step Enantiodivergent Synthesis of (+)- and (-)-Lingzhiol

Org Lett. 2020 Jan 3;22(1):290-294. doi: 10.1021/acs.orglett.9b04322. Epub 2019 Dec 19.

Abstract

An eight-step enantioselective synthesis of lingzhiol is described herein. The sense of an asymmetric Michael reaction is reversed by the choice of metal source, enabling facile access to both enantiomers. A spontaneous semipinacol ring contraction enables mild construction of the lingzhiol core, and radical-mediated benzylic oxidation proceeds in the presence of an unprotected secondary alcohol. This represents the shortest enantioselective synthesis of lingzhiol to date and the only enantiodivergent approach to both enantiomers of this meroterpenoid natural product.

Publication types

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

MeSH terms

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

Substances

  • Biological Products
  • Terpenes
  • lingzhiol