Chemical constituents of C-glycosylflavones from Mimosa pudica

AimTo study chemical constituents of Mimosa pudica of Hainan province. Methods The constituents were separated and purified by column chromatography with macroporous adsorption resin Diaion HP-20, Sephadex LH-20, Toyopearl HW-40, MCI Gel CHP-20, RP-18 and normal phase silica gel. Their structures were identified on the basis of physical and spectral data. ResultsFour compounds were isolated and identified as: 7,8,3′,4′-tetrahydroxyl-6-C-［α-L-rhamnopyranosyl-(1→2)］-β-D-glucopyranosyl flavone (I); 5,7,4′-trihydroxyl-8-C-［α-L-rhamnopyranosyl-(1→2)］-β-D-glucopyranosyl flavone (II); 5,7,3′,4′-tetrahydroxyl-6-C-［α-L-rhamnopyranosyl-(1→2)］-β-D-glucopyranosyl flavone (III); catcher (IV). ConclusionCompound I is a new compound and componuds II-IV were isolated from this plant for the first time.