Abstract: Yunaconitine, a diterpenoid alkaloid native to Yunnan in the plants of Acordtum species, is the rich-est in content and the widest in distribution, but its toxicity is high. In order to utilize the rich resource, some structural modification from yunaconitine had been undertaken, and seven derivatives have been got. This paper reports the synthetic ways of these derivatives and their spectra.

Key words: Yunaconitine