A new norditerpenoid alkaloid designated as ajadinine Ill has been isolated from the seeds of Debhinium ujacis. Its structure E11 was established from physical and spectroscopic data. The known alkaloids desoline, delcosine, and gigactonine have also been obtained from this same source. Complete and unambiguous nmr assignments for thelycoctoninetype norditerpenoid alkaloids 14-deacetylajadine 121, ajacine E3l, delcosine I41, and ambiguine 157 are also presented in this work. Assignments for the aromatic protons of the C-18 N-acetyl anthranilic acid ester group were made by selective INEPT nmr experiments.