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An acylated allose-containing 8-hydroxyflavone glycoside from Veronica filiformis |
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| Authors: | VMohan Chari Rence J Grayer-Barkmeijer Jeffrey B Harborne Bengt-Göran Österdahl |
| Institution: | 1. Plant Science Laboratories, The University, Reading, RG6 2AS, U.K.;2. Institute of Chemistry, Organic Chemistry Department, University of Uppsala, Uppsala, Sweden |
| Abstract: | A novel flavone glycoside has been obtained from the whole plant of Veronica filiformis and identified by means of 13C NMR spectroscopy as isoscutellarein 4′-methyl ether 7-O-β-(6?-O-acetyl-2″-O-allosylglucoside). The related isoscutellarein glycoside is also present. This is the first report of 2-allosylglucose as a disaccharide unit of flavonoids. 13`C NMR data on some A-ring trioxygenated flavonoids are also presented. |
| Keywords: | Scrophulariaceae flavone glycosides isoscutellarein 4′-methyl ether |
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