Flavonoids in Altai Chaihu(Altai Bupleurum Root)

Objective To study the chemical constituents in Altai Chaihu(Altai Bupleurum Root). Method Chromatographic technique was used for isolation and purification of Altai Chaihu,and the structure was identified according to physiochemical property and spectrum data.Result There were 8 compounds isolated and identified,including①3,5,7-trihydroxy-3′,4′-dimethoxy-flavone,②quercetin,③isoliquiritigenin,④hyperoside,⑤5,2′,4′-trihydroxy-6,7,5′-trimethoxyflavone,⑥5, 8-dihydroxy-6,7-dimethoxyflavone,⑦isorhamnetin,and⑧kaemferol.Conclusion All of these 8 compounds are isolated from Altai Chaihu for the first time.