A New Diterpenoid Alkaloid from the Roots of a White-Flowering Aconitum orientale Sample

From the roots of a white-flowering Aconitum orientaleMiller sample, collected in Artvin-Savsat, Turkey, a new diterpenoid alkaloid named aconitorientaline (1) was isolated, along with the known diterpenoid alkaloids septentiriodine, lappaconitine, finaconitine, ranaconitine, puberanidine and delstaphinine (Fig.). The structure of 1 was established on the basis of 1H- and 13C-NMR, DEPT, 1H,1H-COSY, NOESY, HSQC, and HMBC studies. All the known compounds were identified by comparison of their 1H- and 13C-NMR data and co-TLC behavior with those of authentic samples.