Enantioselective Total Synthesis of (-)-Hamigeran F and Its Rearrangement Product

Org Lett. 2022 Jul 22;24(28):5161-5165. doi: 10.1021/acs.orglett.2c01997. Epub 2022 Jul 11.

Abstract

Herein, we report the first enantioselective total synthesis of the highly complex hamigeran diterpenoid (-)-hamigeran F and its rearrangement product. The synthetic strategy features key steps of asymmetric hydrogenation, Horner-Wadsworth-Emmons olefination, and intramolecular Friedel-Crafts acylation to construct the [6,6,5]-tricyclic skeleton bearing three consecutive stereocenters, a sequence of steps involving Rosenmund reduction, Wittig reaction, dihydroxylation to assemble the α-acetoxy ketone group, and an intramolecular aldol reaction to build the tetracyclic core structure.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acylation
  • Diterpenes*
  • Hydrogenation
  • Ketones*
  • Molecular Structure
  • Stereoisomerism

Substances

  • Diterpenes
  • Ketones