Abstract: The guaianolide glucoside was obtained from the all-herbs of Ainsliaea pertyoides Fr. var. albo-tomeniosa Beauverd. The structure was establishad by spectroscopic and X-ray analysis as la-H-guai-4 (15)-en-6α-12-olide-10 α -0- β-D-glucopyranoside.

Key words: Ainsliuea pertyoides var. albo-tomeniosa

摘要： 叶下花（Ainsliaea pertyoides Fr. var albo-tomentosa Beauverd)为菊科多年生草本植物。味苦，有小毒，产于我国西南各省，民间用于治疗风湿性关节痛，跌打损伤，过敏性皮炎等[1]。我们从全草中分离出一个愈疮术内酯甙（guaianolide gluco－side) 经IR、1H NMR、13C NMR、MS和x-晶体衍射分析，测定结构为la-H-愈疮木-4（15）-烯-6a－12一内酯一10a－O-β-D-葡萄吡喃糖甙(la-H-guai-4(15)-en-6a-12一olidc－10a-O-β-D-glucopyranoside)(I).

关键词: 叶下花, 愈疮木内酯甙