Asymmetric hetero Diels-Alder as an access to carbacephams

J Org Chem. 2002 Jan 25;67(2):598-601. doi: 10.1021/jo016186h.

Abstract

A short and efficient asymmetric synthesis of the (6R,7S)-7-tert-butoxycarbonylamino-2-ketocarbacepham is described. The key step involves the hetero Diels-Alder reaction of the benzylimine derived from the enantiomer of Garner's aldehyde with Danishefsky's diene.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbapenems / chemical synthesis*
  • Carbapenems / chemistry*
  • Catalysis
  • Cephalosporins / chemical synthesis*
  • Cephalosporins / chemistry
  • Chromatography, Thin Layer
  • Crystallography, X-Ray
  • Cyclization
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Spectrometry, Mass, Electrospray Ionization
  • Spectrophotometry, Infrared
  • Stereoisomerism
  • Structure-Activity Relationship

Substances

  • 7-tert-butoxycarbonylamino-2-ketocarbacepham
  • Carbapenems
  • Cephalosporins