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Two new flavonoid glycosides from Semen Ziziphi Spinosae
Lin Zhang1, Zhi-Lin Xu, Chun-Fu Wu
1Department of Traditional Chinese Medicines, Shenyang Pharmaceutical University, Shenyang, China.
Abstract:
Two novel flavonoid glycosides, 6"'-dihydrophaseoylspinosin (1) and 6″,6"'-diferuloylspinosin (2), were isolated from the MeOH extract of Semen Ziziphi Spinosae, together with six known flavonoids, isovitexin-2″-O-β-(6-O-E-feruloyl)glucopyranoside (3), spinosin (4), isospinosin (5), 6"'-feruloylspinosin (6), swertisin (7), and isovitexin-2″-O-β-d-glucopyranoside (8). The structures of 1 and 2 were elucidated by spectroscopic methods including UV, IR, ESI-TOF-MS, 1D NMR, and 2D NMR experiments.
