Quercetin and its glycosides in the flowers of Asclepias syriaca L
Sikorska, M.; Matławska, I.
Acta Poloniae Pharmaceutica 57(4): 321-324
2000
ISSN/ISBN: 0001-6837 PMID: 11126623 Document Number: 522106
The following flavonoid compounds have been isolated and identified from the flowers of Asclepiac syriaca L.: quercetin and its glycosides: 7-O-galactoside, 7-O-glucoside, 3-O-beta-D-xylopyranoside(1-->2) beta-D-galactoside and 3-O-beta-D-glucopyranoside(1-->2) beta-D-galactoside. Their structures were established by acid and enzymatic hydrolysis or H2O2 oxidation as well as spectral analysis (UV, 1H and 13C NMR).