Highly convergent total synthesis of (+)-lithospermic acid via a late-stage intermolecular C-H olefination

J Am Chem Soc. 2011 Apr 20;133(15):5767-9. doi: 10.1021/ja2010225. Epub 2011 Mar 28.

Abstract

The total synthesis of (+)-lithospermic acid is reported, which exploits two successive C-H activation reactions as key steps. Rh-catalyzed carbene C-H insertion reaction utilizing Davies's catalyst was used to forge dihydrobenzofuran core, and a late-stage intermolecular C-H olefination coupled the olefin unit with the dihydrobenzofuran core to construct the molecule in a highly convergent manner.

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

  • Alkenes / chemical synthesis
  • Alkenes / chemistry*
  • Benzofurans / chemical synthesis*
  • Benzofurans / chemistry
  • Catalysis
  • Depsides / chemical synthesis*
  • Depsides / chemistry
  • Stereoisomerism

Substances

  • Alkenes
  • Benzofurans
  • Depsides
  • lithospermic acid