Norditerpenoid alkaloids from Delphinium kohatense Munz

A new aconitine-type norditerpenoid alkaloid, kohatenine (1) [10β-hydroxy-1α,8β,16β-trimethoxy-6α,14α-diacetyl-N-ethyl aconitane], along with four known alkaloids, condelphine (2), talatisamine (3), peregrine (4), and 14-O-acetyltalatisamine (5), was isolated from the aerial parts of Delphinium kohatense Munz. The structure of the new compound was deduced on the basis of combined MS (EI and FAB) and NMR (1D and 2D) spectroscopic techniques. The known compounds were confirmed by comparison of the physical and spectroscopic data with those reported in literature.