Cephalotoside A:: a tridesmosidic cycloartane type glycoside from <i>Astragalus cephalotes</i> var. <i>brevicalyx</i>

Calis I., Yusufoglu H., Zerbe O., Sticher O.

PHYTOCHEMISTRY, no.5, pp.843-847, 1999 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Publication Date: 1999
  • Doi Number: 10.1016/s0031-9422(98)00601-3
  • Journal Name: PHYTOCHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Index Chemicus (IC)
  • Page Numbers: pp.843-847
  • Hacettepe University Affiliated: Yes

Abstract

A new tridesmosidic cycloartane type glycoside, cephalotoside A was isolated from the roots of Astragahus cephalotes var. brevicalyx in addition to the known glycosides cyclocanthosides A, D and E. The structure of the new compound was determined by spectral (IR, H-1- and C-13-NMR, and FABMS) and chemical (acetylation) methods and established as 3 beta-(beta-D-xylopyranosyl)oxy-16 beta-(beta-D-glucopyranosyl)oxy-24- (beta-D-xylopyranosyl)oxy-cycloarlane-6 alpha,25-diol. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.