野桂花化学成分研究

从野桂花（Osmanthus yunnanensis）地上部分95％乙醇提取物中首次分离得到18个化合物，应用波谱方法及与已知品对照的手段鉴定它们为：E-阿魏酸二十烷基酯（1）、β-谷甾醇（2）、羽扇豆醇（3）、齐墩果酸（4）、7-oxo-β—sitosterol（5）、乙酰齐墩果酸（6）、（6＇-O－palmitoyl）－sitosterol-3-O-β—D—glucoside（7）、rotundioic acid（8）、地榆糖甙II（9）、3β-hydroxy－27-p－（E）－eoumaroyloxyolean－12－en-28－oicacid（10）、3β—laydroxy-27-p－（Z）－coumaroyloxy－olean－12－en-28-oicacid（11）、hycandinic acid ester（12）、绿原酸丁酯（13）、4，5-二咖啡酰奎尼酸丁酯（14）、28-O-β-D—glueopyranosyl rottmdioic acid（16）以及三个半萜类化合物：4，5-dihydroxyprenyl caffeate（15）、4-（6-O-caffeoyl -β-D—glucopyranosyloxy）-5-hydroxyprenyl caffeate（17）、4-β-D—glucopyranosyloxy5-hydroxyprenyl caffeate（18）。

Chemical Constituents of Osmanthus yunnanensis

Eighteen compounds were isolated from the 95% ethanol extract of the aerial parts of Osmanthus yunnanensis for the first time. On the basis of spectral data or comparison with authentic samples, they were identified as E-ferulic acid eicosyl ester(1) ,β-sitosterol (2), lupenol (3), oleanolic acid (4) ,7-oxo-β-sitosterol (5), acetyloleanolic acid (6), (6'-O-palmitoyl)-sitosterol-3-O-β-D-glucoside (7), rotundioic acid (8), ziyu glycoside Ⅱ (9), 3β-hydroxy-27-p-(E)-Coumaroyloxyolean-12-en-28-oic acid(10) ,3β-hydroxy-27-p-(Z)-coumaroyloxyolean-12-en-28-oic acid(11), hycandin-ic acid ester(12), chlorogenic acid butyl ester(13) ,4,5-di-O-caffeoylquinic acid butyl ester(14) ,28-O-β-D-glucopyr-anosyl rotundioic acid (16) and three hemiterpene derivatives : 4,5-dihydroxyprenyl caffeate (15), 4-(6-O-caffeoyl-β-D-glucopyranosyloxy)-5-hydroxyprenyl caffeate (achada-glycoside C, 17), 4-β-D-glucopyranosyloxy-5-hydroxyprenyl caf-feate(aohada-glycoside A,18).