Abstract: A new ent-kauranoid named rabdoternin H(1) was isolated from the aerial part of Isodon ternifolius and is structure was determined by the spectroscopic methods. Five known ent-kaurane diterpenoids, isodonal (2), longikaurin A,E,g(3-5)and effusanin E(6), together with luteolin (7), apigenin(8),α-amyrin(9),ursolic acid(10)and 2α-hydroxy-ursolic acid (11)were also reported in this paper.

Key words: Isodon ternifolius

摘要： 从牛尾草[Isodon ternifolius (D. Don) Kudo] 的地上部分分离得到一个新的对映-贝壳杉烷型二萜,命名为牛尾草素H(1),通过波谱方法鉴定了它的结构.此外,还分离得到5个已知的对映-贝壳杉烷型二萜化合物:香茶菜醛(2),长管香茶菜素A,E和G(3-5),开展香茶菜素E(6),以及木樨草素(7),芹菜素(8 ),α-香树脂醇(9),乌索酸(10)和2α-羟基乌索酸(11).

关键词: 牛尾草, 唇形科, 对映-贝壳杉烷型二萜, 牛尾草素H