Two new eremophilanolides from Xanthium sibiricum

Nat Prod Res. 2006 Nov;20(13):1265-70. doi: 10.1080/14786410600906780.

Abstract

Two new eremophilanolides, sibiriolides A (1) and B (2), were isolated from the aerial parts of Xanthium sibiricum. The structures of the new compounds were identified as 4S,5R,7R,8R, 11R-2-oxo-1(10)-eremophilen-12,8-olide (1) and 4S,5R,7R,8R,11S-2-oxo-1(10)-eremophilen-12,8-olide (2) by HREIMS and NMR spectroscopic techniques in combination with X-ray crystallographic analysis and CD measurements.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • China
  • Crystallography, X-Ray
  • Lactones / chemistry
  • Lactones / isolation & purification*
  • Mass Spectrometry
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Optical Rotation
  • Plant Components, Aerial / chemistry
  • Plant Extracts / chemistry
  • Plant Extracts / isolation & purification*
  • Sesquiterpenes / chemistry
  • Sesquiterpenes / isolation & purification*
  • Spectrophotometry, Infrared
  • Spectrophotometry, Ultraviolet
  • Xanthium / chemistry*

Substances

  • Lactones
  • Plant Extracts
  • Sesquiterpenes