Diterpenoid alkaloids from the aerial parts of Aconitum anthora L.

Isolation and identification of six diterpenoid alkaloids, from Aconitum anthora L. are described. All proton detected 2D NMR techniques have been used for unambiguous 1 H and 13 C chemical shift assignments of guan-fu-base-Y (6). This is the first investigation of the diterpenoid alkaloids of this plant species.