Chemical constituents from leaves of Lindera aggregate / 中草药

Objective To study the chemical constituents in the leaves of Lindera aggregate.MethodsVarious column chromatographic techniques were used to separate and purify the chemical constituents and their structures were elucidated by spectral analyses.Results Nine compounds were isolated and identified as quercetin(Ⅰ),and kaempferol(Ⅱ),avicularin(Ⅲ),afzelin(Ⅳ),dihydrokaempferol(Ⅴ),astragaline(Ⅵ),kaempferol-3-O-?-D-xylopyranoside(Ⅶ),juglalin(Ⅷ),and kaempferol-3-O-(2″-O-?-D-glucopyranosyl)-?-L-rhamnopyranoside(Ⅸ).Conclusion Compounds Ⅲ—ⅠⅩ are isolated from the title plant for the first time.Compounds Ⅴ—Ⅸ are isolated from the plants of Lindera Thunb.for the first time.