苦丁茶化学成分的研究

STUDIES ON THE CONSTITUENTS OF ILEX KUDINCHA

从苦丁茶叶中分离鉴定出四种成份,其中之一经鉴定为一新五环三萜内酯,暂命名为苦丁茶甙元(kudinchagenin);其他三种成份分别鉴定为α-香树脂、β-谷甾醇和鸟苏酸。

Four compounds were isolated from Ilex kudincha C. J. Tseng. One ofthem-the major aglycone of this plant, has molecular formala of C30H42O3, m.p. 249-250℃, was a new compound and named kudinchagenin (Ⅳ). The structure of Ⅳ which was determined by means of spectral analysis (UV,IR,1H NMR, 13C NMR and MS) was proved to be a new pentacyclie triterpenoid with a lactone group. The others were identified as α-amyrin, β-sitosterol and ursolic acid.