Flavonoids from the leaves of Ilex cornuta

AimTo study the chemical constituents of the leaves of Ilex cornuta Lindl. ex Paxt.MethodsThe compounds were isolated by column chromatography with silica gel and preparative HPLC. Their structures were determined on the basis of physicochemical properties and spectroscopic analysis.ResultsNine flavonoids were obtained and identified as kaempferol −3-O-β-D-glucopyranosyl-(1→2)-a-L-arabinopyranoside (1), quercetin-3-O-β-D-glucopyranosyl-(1→2)-a-L-arabinopyranoside (2), isorharmetin-3-O-β-D-glucopyranoside (3), hyperin (4), 3′-methoxydaidzin (5) isorhamnetin(6), formononetin (7), kaempferol (8), quercetin (9).ConclusionCompound 1 is a new flavonoid.