DITERPENOID ALKALOIDS FROM DELPHINIUM-ALBIFLORUM

Investigation of the aerial parts of Delphinium albiflorum resulted in the isolation and identification of deacetylheterophylloidine [1] alo ng with hetidine [2] and lycoctonine [3]. Structure 1 for this previou sly unreported naturally occurring alkaloid was established on the bas is of detailed nmr spectral studies and chemical correlation with deac etylheterophylloidine, obtained by the hydrolysis of heterophylloidine [4]. H-1- and C-13-nmr chemical shift assignments for 1 and 2 are rep orted herein.