A new flavonol glycoside from the seeds of Nigella glandulifera |
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Authors: | Liu Yu-Ming Liu Qing-Hua Chen Bao-Quan |
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Institution: | Department of Pharmacy Engineering , Tianjin University of Technology , Tianjin 300384 , China. coumarin1968@hotmail.com |
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Abstract: | A new flavonol glycoside, kaempferol 3-O-α-L-rhamnopyranosyl (1?→?6)-O-β-D-glucopyranosyl (1?→?2)-O-β-D-galactopyranosyl (1→2)]-O-β-D-glucopyranoside (1), together with a known compound, kaempferol 3-O-β-D-glucopyranosyl (1?→?2)-O-β-D-galactopyranosyl (1?→?2)-O-β-D-glucopyranoside (2) was isolated from the seeds of Nigella glandulifera. Their structures were elucidated on the basis of spectral analysis, including ESI-MS, ESI-MS/MS, HR-ESI-MS, DQF-COSY, TOCSY, HSQC and HMBC techniques. |
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