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Determination of the structure for polysubstituted flavonoid and 6-C-glucosyl flavonoids using 13C-1H long range
1College of Pharmacy, Chung Ang University, Seoul, Korea.
Archives of Pharmacal Research
|December 1, 1994
Abstract:
A flavone glycoside was isolated from the leaves of Betula platyphylla var. latifolia and characterized as 4',6-Dimethoxy-5-hydroxyflavone-7-O-beta-D-glucoside(pectolinar igenin-7-O -beta-D-glucopyranoside) by method of chemical and NMR spectral analysis. 13C-1H long range coupling was confirmative for determination of its substituted position. In connection with this study, 6-C-Glucosylnalingenin and 6-C-Glucosylaromadendrin were confirmed its structures using this techniques.