Isolation of Anti-oxidant from Domestic Crataegus pinnatifida Bunge Leaves

In order to find the antioxidative compounds, fractionation of the MeOH extract of the leaves of Crataegus pinnatifida guided by DPPH scavenging test furnished seven phenolic compounds, quercetin-3-O-α-L-rhamnopyranosyl(1→6)-β-D-glucopyranoside (1), myricetin-3-O-rhamnose (2), quercetin-3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galctopyranoside (3), quercetin-3-O-β-D-galactopyranoside (4), quercetin (5), apigenin-8-C-β-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (2"-O-rhamnosylvitexin) (6) and (-)-epicatechin (7).