Total synthesis of (-)-8-deoxyserratinine via an efficient Helquist annulation and double N-alkylation reaction

Org Lett. 2010 Aug 6;12(15):3430-3. doi: 10.1021/ol1012444.

Abstract

The first enantioselective total synthesis of (-)-8-deoxyserratinine has been achieved in 15 steps from enone 4 with 7% overall yield. The key features include a highly efficient Helquist annulation to furnish the cis-fused 6/5 bicycle, facile construction of the aza nine-membered ring system employing double N-alkylation strategy, as well as asymmetric Shi epoxidation, delivering the desired beta-epoxide stereospecifically.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkylation
  • Epoxy Compounds / chemistry*
  • Indolizines / chemical synthesis*
  • Indolizines / chemistry
  • Lycopodium / chemistry
  • Molecular Structure
  • Stereoisomerism

Substances

  • 8-deoxyserratinine
  • Epoxy Compounds
  • Indolizines