Phytochemistry 2012-Apr
Anti-inflammatory flavonoids from Cryptocarya chingii.
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Six flavonoids named cryptogiones A-F, and nine known compounds were isolated from an ethanol extract of stems of Cryptocaryachingii. The structures of the compounds were elucidated by interpretation of comprehensive spectroscopic data and X-ray analysis. A majority of these flavonoids contained an acetic acid/lactone moiety, a possible taxonomic marker. Anti-inflammatory effects of the compounds were evaluated using in vitro assays. At 20 μM concentration, three compounds significantly inhibited TNFα-induced NF-кB activation and LPS-induced IL-1β expression.