Withanolide glycosides from Dunalia australis

M Lischewski; N T Hang; A Porzel; G Adam; G Massiot; C Lavaud

doi:10.1016/0031-9422(92)80043-e

Withanolide glycosides from Dunalia australis

Phytochemistry. 1992 Mar;31(3):939-42. doi: 10.1016/0031-9422(92)80043-e.

Authors

M Lischewski¹, N T Hang, A Porzel, G Adam, G Massiot, C Lavaud

Affiliation

¹ Institute of Plant Biochemistry, Halle/Saale, Germany.

PMID: 1368042
DOI: 10.1016/0031-9422(92)80043-e

Abstract

Four new withanolide glycosides, (20R,22R)-O-(3)-[beta-D- xylopyranosyl(1----3), beta-D-xylopyranosyl(1----4)]-beta-D-glucopyranosyl-3 beta,20-dihydroxy-1 alpha-acetoxy-witha-5,24-dienolide, (20R,22R)-O-(3)-[beta-D-xylopyranosyl(1----3), beta-D-glucopyranosyl(1----4)]-beta-D-glucopyranosyl-3 beta,20-dihydroxy-1 alpha-acetoxy-witha-5,24-dienolide, (20R,22R)-O-(3)-[beta-D- glucopyranosyl(1----3), beta-D-glucopyranosyl(1----4)]-beta-D-glucopyranosyl- 3 beta,20-dihydroxy-1 alpha-acetoxy-witha-5,24-dienolide and (20R,22R)-O-(3)-[beta-D-glucopyranosyl(1----3), beta-D- glucopyranosyl(1----4)]-beta-D-glucopyranosyl-3 beta, 12 beta,20-trihydroxy- 1 alpha,acetoxy-witha-5,24-dienolide, named dunawithanines C, D, E and F, respectively, were isolated from Dunalia australis. Their structures were elucidated on the basis of spectral and chemical evidence, especially NMR data of the peracetates.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Carbohydrate Sequence
Ergosterol / analogs & derivatives*
Glycosides / chemistry
Glycosides / isolation & purification*
Hydrolysis
Magnetic Resonance Spectroscopy
Molecular Sequence Data
Plants / chemistry*

Substances

Glycosides
Ergosterol