New quercetin quercetin 3-[2,3,4-triacetyl-a-L-arabinosyl(1→6)-b-D-glucoside] has been isolated together with the dihydroflavonol glucoside callunin and quercetin 3-a-L-arabinoside. Structural elucidation of these natural products was achieved mainly by 1H and 13C NMR spectroscopy. Furthermore, 1H NMR assignments for H-2 and H-3 of the dihydroflavonol glucoside were interchanged.
5, 7, 3, 8, Calluna vulgaris, Ericaceae, flowers, 4′-tetrahydroxyflavonol, 4′-tetrahydroxydihydroflavonol 8-glucoside, callunin, quercetin 3-[2, 4-triacetyl-a-L-arabinosyl(1->6)-b-D-glucoside], acylated flavonoid glycosides
Publication DOI: 10.1016/0031-9422(93)85253-NJournal NLM ID: 0151434Publisher: Elsevier
Institutions: Laboratoire de Chimie Physique and UFR de Pharmacie, Université de Limoges, Limoges Cedex, France, Laboratoire de Pharmacognosie, UFR de Pharmacie, Université de Limoges, Limoges Cedex, France, Laboratoire de Pharmacognosie, UFR de Pharmacie, Université Joseph Fourier-Grenoble I, Domaine de la Merci, Tronche Cédex, France
Methods: 13C NMR, 1H NMR, gel filtration, TLC, HPLC
Found