Abstract: The roots of S. lappo C. B. Clarke afforded in addition to thirteen sesquiterpenoid con-stituents (1 and 3~ 14) reported a new sesquiterpene aldehyde (2). The structure of the new com-pound was established by spectral method. Moreover, among the thirteen known sesquiterpenoid constituents, Compound 4, 12 and 14 have been obtained from this plant source for the first time.

Key words: Saussurea lappa

摘要： 从云南丽江产云木香（Saussurea lappe C. B. Clarke）的根中分离得到了14个倍半萜化合物，它们的结构通过波谱和化学的方法得到鉴定。其中化合物2被鉴定为是一新化合物，化合物4，12和14为首次从该植物中分离得到。

关键词: 云木香, 菊科, 倍半萜, 倍半萜内酯, 倍半萜内酯甙