Urinary metabolites of liquiritigenin were investigated in rats after intravenous administration. Four major urinary metabolites, isoliquiritigenin (2), liquiritigenin-4′-O-β-D-glucuronide (3), liquiritigenin-7-O-β-Dglucuronide (4), and davidigenin-2′-O-β-D-glucuronide (5), were isolated from the urine of rats. Their structures were elucidated on the basis of extensive spectroscopic methods, among which 5 was a new compound. Compound 2 showed significant inhibition of platelet aggregation induced by ADP, whose 50% inhibitory concentration (IC50) value was 20.38 ± 1.68 μM.
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This work was financially supported by the National Natural Science Foundation of China (Grant numbers 81403060 and 81202877).
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Published in Khimiya Prirodnykh Soedinenii, No. 3, May–June, 2018, pp. 377–379.
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Li, Yy., Yang, L., Chai, X. et al. Four Major Urinary Metabolites of Liquiritigenin in Rats and Their Anti-Platelet Aggregation Activity. Chem Nat Compd 54, 443–446 (2018). https://doi.org/10.1007/s10600-018-2375-2
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DOI: https://doi.org/10.1007/s10600-018-2375-2