arnicin

Previous phytochemical studies have demonstrated the presence in the plant of quassinoids as well as indole alkaloids.

本论文引言部分对19世纪60年代至今，从臭椿中分离出的20多种苦木苦味素类物质的化学结构及相关的生物活性研究进行了综述。

CONCLUSION Nine new compounds, namely, sonchifoliasolides H-P were isolated.

结论有9个是未见报道的新化合物,命名为:苦碟子苦素H~P。

OBJECTIVE This research is to isolating sonchifoliasolide A from the aerials and roots of Ixeris sonchifolia Hance and using this compound as the material to give a derivative reaction.

目的从苦碟子地上部分和根部中分离制备苦碟子苦素A,并以此为原料进行衍生化反应。