Chemical constituents from the flowers of Camellia chrysantha

The compounds were isolated from the flowers of Camellia chrysantha by chromatography on silica gel column,Sephadex LH-20 column,ODS column and recrystallization,the structures were determined on the basis of physicochemical evidence and ectroscopic analysis.Thirteen compounds were obtained and identified as quercetin(1),quercetin-7-O-β-D-glucopyranoside(2),quercetin-3-O-β-D-glucopyranoside(3),rutin(4),vitexin(5),kaempferol(6),kaempferol-3-O-β-D-glucopyranoside(7),lupeol(8),oleanolic acid(9),daucosterol(10),β-sitosterol(11),protocatechuicacid(12)and vanillin(13).Thirteen compounds,except(1),(6)and(9)were obtained from the title plant for the first time.