Delbruninol, a new norditerpenoid alkaloid from Delphinium brunonianum Royle

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