Leaf flavonoids of Ziziphus spina-christi |
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| Authors: | M.A.M. Nawwar M.S. Ishak H.N. Michael J. Buddrust |
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| Affiliation: | 1. National Research Centre, El-Dokki, Cairo, Egypt;2. Institut für Spektrochemie und Angewandte Spektroskopie, Postfach 778, D-4600 Dortmund 1, West Germany |
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| Abstract: | From the leaves of Ziziphus spina-christi, the new flavonoid quercetin 3-xylosyl(1→2)rhamnoside-4′-rhamnoside as well as rutin, hyperin and quercitrin were characterized. The structures were established by chromatography, chemical degradation and UV spectroscopy, and confirmed by 1H NMR and 13C NMR spectroscopy. |
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| Keywords: | Rhamnaceae flavonol glycosides quercetin 3-xylosyl(1→2)rhamnoside-4′-rhamnoside. |
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