From the aerial parts of Aconitum cochleare WOROSCHIN, two new norditerpenoid alkaloids named aconitilearine (1) and N- deethylmethyllycaconitine (2) were isolated along with the eight known norditerpenoid alkaloids 3-10. The structures for the new compounds were established on the basis of 1H, 13C, DEPT, homonuclear 1H,1H-COSY, NOESY, HSQC, and HMBC NMR studies. © 2006 Verlag Helvetica Chimica Acta AG.