摘 要 ：从著名民间药滇南草乌（Aconitum austroyunnanense W. T. Wang）新鲜根中分得11个二萜生物碱，其中碱1通过光谱研究及化学方法证明其结构为14－acetyl sachaconitine，是一新化合物，并命名为南乌碱甲（austroconitine A）（1）；碱2—8分别鉴定为：黄草马碱乙（vilmorrianine B，即karakoline)（2），isotalatizidine（3），黄草乌碱丁(vilmor－rianine D，即 sachaconitine）（4），黄草乌碱丙（vilmorrianine C）（5），talatisamine（6），黄草乌碱甲（vilmorrianine A）（7），8-去乙酚滇乌碱8－deacetyl yunaconitine）（8）。碱9—11的结构正在鉴定中。
Abstract:Eleven ditcrpenoid alkaloids were isolated from the fresh roots of Aconitnm austroyunnanense W. T. Wang, a famous folk herbal medicine with cura tivc effects of rheumatism, apoplexy palsy, fracture, etc. Alkaloid 1, a new compound, was determined to be 14-acetyl sachaconitine on the basis of its spectroscopic data and chemical method, and named austroconitine A( 1 ). Alkaloid 2 - 8, seven known compounds, were identified as vilmorrianine B (karakoline) (2), isotalatizidine (3), vilmorrianine D (sachaconitine) (4), vilmorrianine C(5), talatisamine (6), vilmorrianine A (7), 8 -deacetyl yunaconitine ( 8 ), respectively, through the direct comparison to those authentic samples. Alkaloids 9-11 are still under identification.