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Column chromatographic separation of the MeOH extract from the roots of Dicentra spectabilis yielded fourteen compounds, menisdaurin (1), menisdaurilide (2), trans-N-pcoumaroyltyramine (3), trans-N-p-feruloyltyramine (4), 4-Oferuloylquinicacid (5), chlorogenic acid (6), 3-O-feruloylquinicacid (7), ferulic acid (8), protopine (9), Kaempferol 3,7-di-O-β-Dglucopyranoside (10), kaempferol 3-O-β-D-glucopyranosyl-7-Oα-L-rhamnopyranoside (11), α-rhamnoisorobin (12), astragalin (13), and nicotiflorin (14). Their structures were determined on the basis of NMR spectroscopic data. Among them, compound 1, 38, and 10-14 isolated from this plant were reported for the first time. The isolated compounds (1-14) were tested for nitric oxide (NO) inhibitory activity on lipopolysaccharide-stimulated RAW 264.7 cells. Compound 3, 4 and 12 significantly inhibited NO production. Moreover, Compound 3 suppressed pro-inflammatory cytokines (TNF-α, IL-1β and IL-6) in a dosedependent manner. These data suggest that compound 3 possess anti-inflammatory activity and might be useful natural materials for development of anti-inflammatory agent.

Chemical constituents of Dicentra spectabilis and their anti-inflammation effect