目的研究金丝桃属植物元宝草Hypericum sampsonii 全株的化学成分,并通过药理试验寻找活性成分(或组份).方法在细胞毒筛选结果指导下,同步对元宝草活性部位进行化学成分分离纯化.硅胶为吸附剂,多次柱色谱、重结晶;并通过理化数据测定及波谱分析,鉴定化合物结构.结果分离鉴定出6种成分,分别是:1-苯甲酰基-3-(3-甲基-2-丁烯基)-6,6,13,13-四甲基-11-香叶基-5-唑四环[7.3.1.03,7.04,11] 十三烷-2,12-二酮(元宝草酮A,Ⅰ);1-苯甲酰基-5-(1-羟基-异丙基)-6,6,13,13-四甲基-11-香叶基-四环[7.3.1.1.03,7] 十四烷-2,12,14-三酮(元宝草酮F,Ⅱ);3-(1-羟基-5-甲基-4-己烯基)-6,10-二(3-甲基-2-丁烯基)-8-苯甲酰基-9,9-二甲基-4-唑三环[6.3.1.01,5] -5-十二碳烯-7,12-二酮(元宝草酮K,Ⅲ);1,2-二氢-3,6,8-三羟基-1,1-双(3-甲基-丁-2-烯基)--2,9-酮(金丝梅酮,Ⅳ);1,7-二羟基-4-甲氧基（口山）酮(Ⅴ)及1,3,6,7-四羟基-8-(3-甲基-丁-2-烯基)（口山）酮(Ⅵ).结论化合物Ⅳ～Ⅵ为首次从该植物中分离得到.另外,通过细胞毒试验发现,滇产元宝草的氯仿及醋酸乙酯提取物具有抗癌活性.

Object To study the chemical constituents of Hypericum sampsonii Hance from Yunnan Province Methods Cytotoxicity screening of extracts from wild and cultivated H sampsonii was carried out by L 1210 cell and KB cell Chemical constituents for wild H sampsonii were isolated by column chromatography The chemical structures were identified by physical and chemical properties and spectral data analysis Results Six compounds have been isolated and established as 1 benzoyl 3 (3 methyl 2 butenyl) 6, 6, 13, 13 tetramethyl 11 geranyl 5 lxatetracycol[73103, 704, 11 ] tridecane 2, 12 dione (sampsonione A, Ⅰ); 1 benzoyl 5 (1 hydroxy isopropyl) 6, 6, 13, 13 tetramethyl 11 geranyl tetracycol [731103, 7] tetradecane 2, 12, 14 trione (sampsonione F, Ⅱ); 3 (1 hydroxy 5 methyl 4 hexenyl) 6, 10 di (3 methyl 2 butyryl) 8 benzoyl 9, 9 dimethyl 4 oxatricycol [63101,5] 5 dodecene 7, 12 dione (sampsonione K, Ⅲ); 1,2 dihydro 3, 6, 8 trihydroxy 1, 1 bis (3 methyl but 2 enyl) xanthen 2, 9 dione (patulone, Ⅳ); 1, 7 dihydroxy 4 methoxy xanthone (Ⅴ) and 1, 3, 6, 7 tetrahydroxy 8 (3 methyl but 2 enyl) xanthone (Ⅵ) Conclusion Compounds Ⅳ-Ⅵ are first obtained from H sampsonii In addition, the fractions of chloroform extracting and ethyl acetate extracting possess anticancer activities by cytotoxicity tests.

云南省应用科学基金(1999B004M);云南省国际合作项目(GH200121)