Abstract:Three new diterpenoid alkaloids,talitine A,talitine B and tali-tine Cwere isolated from Delphynium taliense Franch.The structures of talitine B and talitine C were established as (1)and (2) by MS, IR, 1H NMR and 13C NMR, Methyllycaconitine (3)and delsemine (4)were also isolatid from the same plant,