From the aerial parts of Consolida hellespontica (Boiss.) Chater we have isolated the new diterpenoid alkaloids chellespontine (1) and azitine (4). The norditerpenoid alkaloid 1-O-methyldelphisine (7) has not been reported earlier as occurring in nature, and the aporphine alkaloid (+)-corydine (11) has been isolated for the first time in the Ranunculaceae family. Besides these, the known alkaloids delphinine (8), delphisine (9) and bullatine C (14-acetylneoline) (10) have been isolated from this plant. The structures of these alkaloids were established by chemical correlation and spectroscopic studies. © 1993.