ABSTRACT
@#Twelve compounds were isolated and purified from ethyl acetatefraction of Cynanchum stauntonii by silica gel, Sephadex LH-20 and ODS column chromatography. Their structures were identified by spectral techniques and physicochemical properties as syringaresinol(1), (-)-(7R, 7′R, 7″R, 8S, 8′S, 8″S)-4′, 4″-dihydroxy-3, 3′, 3″, 5-tetramethoxy-7, 9′ ∶7′, 9-diepoxy-4, 8″-oxy-8, 8′-sesquineolignan-7″, 9″-diol(2), prinsepiol(3), 4-hydroxyacetophenone(4), baishouwubenzophenone(5), 2, 4-dihydroxyacetophenone(6), benzoic acid(7), 1, 4-benzenediol(8), 6-O-［E］-sinapoyl-α-D-glucopyranoside(9a), 6-O-［E］-sinapoyl-β-D-glucopyranoside(9b), 1-O-methyl-α-D-cymadropyranoside(10), β-daucosterol(11), and β-sitosterol(12). Compounds 1-3, 5 and 7-11 were firstly isolated from this plant.
ABSTRACT
@#Twelve compounds were isolated from the ethanol extract of Fructus Gleditsiae Abnormalis by macroporous resin, silica gel, Sephadex LH-20, MCI and ODS column chromatographies. Their structures were identified on the basis of physicochemical properties and spectral data as gleditsioside A(1), gleditsioside B(2), gleditsioside H(3), gleditsioside I(4), gleditsioside J(5), gleditsioside K(6), gleditsia saponins C′(7), tamarixetin-7-O-β-D-glucopyranoside(8), neohesperidin(9), chrysoeirol-7-O-neohesperidoside(10); syringaresinol- O-β-D-glucopyranoside(11), liriodendrin(12). Compounds 8-12 were firstly isolated from this genus.