Abstract:To study the chemical constituents of Camellia oleifera (Abel.), ten compounds were isolated from the 95% ethanol extract. On the basis of spectral data, their structures were identified as 3α-spinasterol (1), ergosta-4,6,8(14),22-tetraen-3-one (2), (R)-de-O-metillasiodiplodin (3), 4',5,7-trihydroxyflavanone (4), emodin (5), 6-ethyl-5-hydroxy-2,7-dimethoxy-1,4-naphthoquinone (6), ω-hydroxyemodin (7), macrophorin A (8), negunfurol (9), 1-(3',5'-dimethoxy)-phenyl-2-(4"-hydroxy) phenylethane (10). Compounds 1-9 were obtained from this species for the first time, and compounds 2, 3, 5-9 were obtained from the genus Camellia for the first time.