Novel acetylated flavonoid glycosides from the leaves of Allium ursinum |
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| Authors: | Hou Wu Slavik Dushenkov Chi-Tang Ho Shengmin Sang |
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| Affiliation: | 1. Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, United States;2. Rutgers University, Foran Hall, 59 Dudley Road, New Brunswick, NJ 08901, United States;3. Human nutrition research program, Julius L. Chambers Biomedical/Biotechnology Research Institute, North Carolina Central University, North Carolina Research Campus, 500 Laureate Way, Kannapolis, NC 28081, United States;4. Department of Chemistry, North Carolina Central University, 1801 Fayetteville Street, Durham, NC 27707, United States |
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| Abstract: | Seven flavonoid glycosides, kaempferol 3-O-α-L-rhamnopyranosyl (1→2)-3-O-acetyl]-β-D-glucopyranoside (1), kaempferol 3-O-α-L-rhamnopyronosyl (1→2)-6-O-acetyl]-β-D-glucopyranoside (2), kaempferol 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (3), kaempferol 3-O-β-D-glucopyranoside (4), kaempferol 3,7-di-O-β-D-glucopyranoside (5), 7-O-β-D-glucopyranosyl kaempferol 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (6), kaempferol 3-O-α-L-rhamnopyranosyl (1→2)-β-D-glucopyranoside-7-O-2-O-(trans-p-coumaroyl)]-β-D-glucopyranoside (7) were isolated from the n-butanol fraction of Allium ursinum L. and the structures of these compounds were elucidated on the basis of mass spectrometry, 1H NMR, 13C NMR, HMQC and HMBC data. Among them, 1 and 2 are novel compounds and compounds 4 and 5 were isolated from this plant species for the first time. |
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| Keywords: | Allium ursinum L Flavonoids Kaemferol glycosides NMR spectroscopy |
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