拉萨翠雀花生物碱成分的研究

摘要

From the roots of Delphinium gyalanum Marq.et Shaw native to China,a pair of newregioisomeric diterpenoid alkaloids as a mixture,named gyalanine A and B,was isolated whosestructures were shown to be 4 and 5,respectively,on the basis of spectral data.The knownditerpenoid alkaloids,delsemine A(1)and B(2),methyllycaconitine(3)and lycoctonine,werealso obtained.