Abstract: A new named infexusin(1) together with a known compound,kamebacetal A,were usilated from the leaves of Rabdosia inflexus (Thumb.)Kundo collected at Song county,Henan Province,and their were determined by spectroscopic analysis. Inflexusin is elucidated as ent-1β,6,11β,15α-tertraacetoxy-6,7-secopirolactone-kaur-16-ent(1).

Key words: Rabdosia inflexus

摘要： 从河南省嵩县产内折香茶菜(Rabdosia inflexus(Thunb.)Kudo)叶中分离到两种对映-贝壳杉烯型二萜化合物，根据各种光谱数据推断一个为新化合物，其化学结构为：对映-1β,6,11β,15α-四乙酰氧基-6，7-螺断内酯-16-贝壳杉烯(l)，命名为内折香茶菜素(inflexusin)；另一个为已知化合物kamebacetal A。

关键词: 内折香茶菜, 对映-贝壳杉二萜, 内折香茶菜素