Carmichaeline A: A New C2o-diterpenoid Alkaloid from Aconitum carmichaeli

The roots of Aconitum carmichaeli Debx. are known for their medicinal value. A new C20-diterpenoid alkaloid designated as carmichaeline A (1) has been isolated, along with eight known diterpenoid alkaloids from the roots of the plant. Their structures were elucidated on the basis of spectroscopic data interpretation.