Abstract: Three new sesquiterpenols, which were named as pterodondiol ,pterodontriol A and pterodontriol B, were isolated from Laggera pterodonta (DC.) Benth . Their structures were estab-lished to be 4β-dihydroxy-enantio-eudesmane, 2α,4β-trihydroxy-enantio-eudesmane and 1α,4β, 11-trihydroxy-enantio-eudesmane.

Key words: Laggera pterodonta

摘要： 从菊科植物臭灵丹(Laggera pterodonta)分离得到3个新的倍半萜醇，命名为臭灵丹二醇(pterodondiol)(1)，臭灵丹三醇甲(pterodontriol A)(2)和臭灵丹三醇乙(pterodontriol B)(3)。其结构分别被指定为：4β,11-二羟基- 对映-桉烷(l)，2α,4β,11-三羟基-对映-桉烷(2)和1α,4β,11-三羧基-对映-桉烷。

关键词: 臭灵丹, 倍半萜醇, 桉烷