中文摘要：

目的 研究中药云木香的化学成分。方法 用质量分数为95％的乙醇对云木香进行回流提取，回收乙醇，所得浸膏用水混悬，依次用等体积的石油醚（30～60℃）、氯仿、乙酸乙酯、正丁醇萃取。然后利用各种柱色谱及HPLC等方法对氯仿、乙酸乙酯、正丁醇萃取物进行分离纯化，根据理化性质和波谱数据（^1H-NMR,^13C-NMR和MS）进行结构鉴定。结果 得到6个化合物，分别鉴定为二氢-α--环木香烯内酯（1）、8，8＇-二羟基松脂素（2）、甲基-α-D-呋喃果糖苷（3）、丁二酸（4）、β-谷甾醇（5）、胡萝卜苷（6）。结论 化合物1为新天然产物，化合物2～4为首次从该属植物中分得。

英文摘要：

Objective To study the chemical constituents of Saussurea lappa. Methods The roots of Saussurea lappa were extracted with 95 % ethanol under reflux. The alcoholic extract was concentrated and successively partitioned with petroleum ether（30-60℃ ）, CHCl3, AeOEt and n-BuOH. The compounds were isolated from the extraction of CHCl3, AcOEt and n-BuOH by column chromatography on silica gel, Diaion 101, Sephadex LH-20 and HPLC. Their structures were determined on the basis of physicoehemical properties and spectroscopic methods such as ^1H-NMR, ^13C-NMR and MS. Results Six compounds were identified as dihydro-α-eyelocostunolide （1）, 8, 8＇-dihydroxypinoresinol （2）, methyl-α-D-fruetofuranoside （3）, sueeinie acid （4）,β-sitosterol （5）, daucosterol （6）, respectively. Conclusions Compound 1 is a new natural product. Compounds 2, 3 and 4 are obtained from the Saussurea genus for the first time.