Abstract
Two new flavonoid glycosides, 2′,4′-dihydroxydihydrochalcone-4-O-β-d-glucopyranoside (1) and medicarpin-3-O-β-d-apiofuranosyl (1 → 2)-β-d-glucopyranoside (2), together with 34 known flavonoids were isolated from the 75% EtOH extract of the dried roots of Glycyrrhiza uralensis Fisch. Their structures were elucidated on the basis of spectroscopic analyses. The flavonoids were classified into ten sub-types, namely, dihydrochalcone (1), pterocarpans (2–4), flavones (5–6), flavanones (7–11), chalcones (12–15), retro-chalcones (16–18), isoflavans (19–21), isoflavones (22–28), 3-arylcoumarins (29–30), and coumestans (31–36). The isolated flavonoids were evaluated for in vitro hepatoprotective activity against d-galactosamine-induced toxicity in human hepatoma HepG2 cells.
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Acknowledgements
This work was supported by State Key Program of National Natural Science Foundation of China (Grant number: 81430095).
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Cheng, M., Ding, L., Kan, H. et al. Isolation, structural elucidation and in vitro hepatoprotective activity of flavonoids from Glycyrrhiza uralensis. J Nat Med 73, 847–854 (2019). https://doi.org/10.1007/s11418-019-01329-0
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DOI: https://doi.org/10.1007/s11418-019-01329-0