A Radical-Based Synthesis of Lingzhiol

J Org Chem. 2017 Sep 15;82(18):9844-9850. doi: 10.1021/acs.joc.7b01416. Epub 2017 Aug 29.

Abstract

The polycyclic natural product lingzhiol [(±)-1] was synthesized from dimethoxytetralone 8 via cyclization of an intermediate benzylic radical, generated from spiroepoxide 14, onto an alkynyl substituent generating tetracyclic compound 13 with an exocyclic double bond. After oxidative cleavage of the double bond of 13 and reduction of the keto function of 23, the correct diastereomer, 12-syn, was converted to lingzhiol (1) via known steps. In a similar manner, lingzhiol analogue 39 was synthesized from 5-methoxy-1-tetralone (27).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzyl Compounds / chemistry*
  • Cyclization
  • Free Radicals / chemistry
  • Molecular Structure
  • Oxidation-Reduction
  • Terpenes / chemical synthesis*
  • Terpenes / chemistry

Substances

  • Benzyl Compounds
  • Free Radicals
  • Terpenes
  • lingzhiol