Chemical constituents from Tinospora sinensis (Ⅱ) / 中成药

ABSTRACT

AIM To study the chemical constituents from Tibetan medicine Tinospora sinensis (Lour.)Merr..METHODS The ethyl acetate fraction of ethanol extract from T.sinensis was isolated and purified by silica,Sephadex LH-20,preparative HPLC column and recrystallization,then the structures of obtained compounds were identified by physicochemical properties and spectral data.RESULTS Nine compounds were isolated and identified as rutin (1),quercetin (2),kaempferol (3),luteolin (4),myricetin (5),paeonol (6),N-cisferuloyltyramine (7),myricetin-3-O-β-D-glucopyranoside (8),quercetin-3-O-α-L-rhamnoside (9).CONCLUSION All the compounds are isolated from this plant for the first time.