Delstaphinine [1], a new C19-diterpenoid alkaloid, and 1-dehydrodel-phisine {7} have been isolated from the seeds of Delphinium staphisagria. The structures have been determined with the aid of1H- and13C-nmr spectroscopy and were confirmed by synthesis from neoline and delphisine, respectively. 1-Dehydrodelphisine has not been isolated from a natural source previously. © 1987, American Chemical Society. All rights reserved.