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  • Title: Kaempferol, isorhamnetin and their glycosides in the flowers of Asclepias syriaca L.
    Author: Sikorska M, Matławska I.
    Journal: Acta Pol Pharm; 2001; 58(4):269-72. PubMed ID: 11693731.
    Abstract:
    The following flavonoid compounds have been isolated and identified from the flowers of Asclepias svriaca L.: kaempferol, kaempferol 7-O-beta-glucoside, kaempferol 3-O-beta-galactopyranoside, kaempferol 3-O-beta-xylopyranosyl (1-->2)-beta-galactopyranoside, kaempferol 3-O-beta-glucopyranosyl (1-->2)-beta-galactopyranoside, isorhamnetin, isorhamnetin 7-O-beta-glucoside, isorhamnetin 3-O-beta-galactoside and isorhamnetin 3-O-beta-xylopyranosyl (1-->2)-beta-galactopyranoside. Their structures were established by conventional (acid, enzymatic hydrolysis and H2O2 oxidation) and spectral analysis (UV, 1H NMR, 13C NMR).
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