N. A. Artamonova, G. K. Nikonov, K. Nusipbekova
Sep 1, 1987
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Journal
Chemistry of Natural Compounds
Abstract
The features of the ~SC NMR spectrum that we obtained of the glycoside isolated and literature figures for spiraeoside from plants of the genus Allium [7] are very close. The values of the signals of the carbon atoms of quercetin 3'-glucoside -C-2 146.3, C-3 136.2, C--I' 122.1, C-2' 116.7, C-3' 145.0, C-4' 149.1, C-5' 116.1, C-6' 123.3 -calculated in the light of the glycosylation effect with the use of corrections [7] found in a comparison of the chemical shifts of the signals of the carbon atoms of luteolin and luteolin 3'-glucoside differ substantially from the values of the signals of the carbom atoms of the glycoside that we had isolated. The chemical shifts of the signals of the carbohydrate moiety of the glycoside were close to those for methyl O-B-D-glucopyranoside [8]. On the basis of the XSC NMR spectrum, the main flavonoid glycoside from the leaves of European meadowsweet has been identified as quercetin 4'-O-~-D-glucopyranoside, spiraeoside [2].