Chemical constituents in stems of Schima superba

Objective To study the chemical constituents in the stems of Shima superba.MethodsThe chemical constituents were isolated and purified by chromatography on silica gel,Sephadex LH-20 column,and HPLC.Their structures were determined on the basis of spectral data analyses.ResultsTwelve compounds were isolated,and structures were identified as camelliagenin A(1),Al-barrigenol(2),barringtogenol C(3),2,6-dimethoxybenzoquinone(4),2,4,6-trimethoxyphenol(5),syringic acid(6),coniferyl aldehyde(7),syringaldehyde(8),kaempferol(9),quercetin-3-O-β-D-glucopyranoside(10),quercetin-3-O-β-D-galactopyranoside(11),and acernikol(12),respectively.Conclusion All the compounds are isolated from this plant and plants of Schima Reinw except compound 2 for the first time.