Alkaloids from Consolida oliveriana

Four new diterpenoid alkaloids, olivimine (1), olividine (2), 8-O-methylcolumbianine (3), and 7α-hydroxycossonidine (4), were isolated from the aerial parts of Consolida oliveriana. Compounds 1 and 2, 3, and 4 belong to the lycoctonine-azomethine, aconitine, and hetisine types, respectively, and their structures were elucidated by spectral data interpretation.