云南刺桐中木脂素类成分研究OA

To study the chemical constituents of the twigs and leaves of Erythrina yunnanensis.The ethyl acetate extraction was isolated and purified by column chromatography over silica gel,Sephadex LH-20,MCI gel,as well as on semi-preparative HPLC.The structures of the obtained compounds were identified through NMR spectral data.nine compounds were isolated and identified to be:4'-hydroxy-3,3',4,5,5'-pentamethoxy-7,9':7',9-diepoxylignane(1),syringaresinol(2),jatrointelignan D(3),lar-iciresinol(4),ficusal(5),3-methoxy-4-hydroxy-1'-allyl-2',6'-dimethoxy-8,4'-oxyneoligna-7,9-diol(6),ω-hydroxyproioquaiacone(7),coniferaldehyde(8)and vanillin(9).