A new norditerpenoid alkaloid, delbruninol (1), has been isolated from the aerial parts of Delphinium brunonianum Royle its structure has been established on the basis of its spectroscopic data (IR, HRFABMS, 1H, 13C,1H-1H and 1H-13C COSY, ROESY, TOCSY, HMQC-TOCSY and HMBC NMR spectra). The known alkaloids delcosine, browniine, blacknidine, delbrunine, 18-methoxygadesine and nudicaulamine were also isolated and identified. The roots of D. brunonianum Royle furnished the known alkaloids methyllycaconitine and lycoctonine.