(6S)-Hydroxy-3-oxo-alpha-ionol glucosides from Capparis spinosa fruits

  • Phytochemistry. 2002 Feb;59(4):451-7. doi: 10.1016/s0031-9422(01)00399-5.
Ihsan Caliş  1 ,  Ayşe Kuruüzüm-Uz ,  Piergiorgio A Lorenzetto ,  Peter Rüedi
Affiliations
  • 1. Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, 06100 Ankara, Turkey.
PMID: 11830166 DOI: 10.1016/s0031-9422(01)00399-5
Abstract

Two new (6S)-hydroxy-3-oxo-alpha-ionol glucosides, together with corchoionoside C ((6S,9S)-roseoside) and a prenyl glucoside, were isolated from mature fruits of Capparis spinosa. The structures were established on the basis of spectroscopic, chiroptic and chemical evidence. In addition, the 13C-resonance of C-9 was found to be of particular diagnostic value in assigning the absolute configuration at that center in ionol glycosides. The alpha-ionol derivatives are metabolites of (+)-(S)-abscisic acid.

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