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PubMed · 12242799

[Flavonoids from Beijing propolis].

L Zhou·J Guo·J Yu
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Abstract

OBJECTIVE: To separate and identify the active flavonoids from Beijing Propolis. METHOD: The flavonoids were isolated by column chromatography with silica gel and polyamide, purified with Sephadex LH-20, and elucidated on the basis of NMR, MS, UV, IR and CD spectra. RESULT: Six kinds of flavonoids were obtained and elucidated as I: pinostrobin, 5-hydroxy-7-methoxy-flavanone; II: pinocembrin, 5, 7-dihydroxy-flavanone; III: tectochrysin, 5-hydroxy-7-methoxy-flavone; IV: chrysin, 5, 7-dihydroxy-flavone; V: izalpinin, 5-hydroxy-7-methoxy-flavonol and VI: galangin, 5, 7-dihydroxy-flavonol. CONCLUSION: Compounds I, II, III and V were found for the first time from Beijing Propolis.

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FlavanonesFlavonoidsMateria MedicaPropolisJournal Article

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L Zhou, J Guo, J Yu. 1999. [Flavonoids from Beijing propolis].. https://pubmed.ncbi.nlm.nih.gov/12242799/

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