Quercetin and its glycosides in the flowers of Asclepias syriaca L.
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).
Sikorska
M
M
Department of Pharmacognosy, Karol Marcinkowski University of Medical Sciences, 10 Sieroca Str., 61-771 Poznań, Poland.
Matławska
I
I
D002855:Chromatography, Thin Layer; D006027:Glycosides / Q000138:chemical synthesis / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry* / Q000302:isolation & purification
D006027:Glycosides; D010936:Plant Extracts; D011794:Quercetin