The molecule is the delta-lactam obtained by formal oxidation at the 2-position of sparteine. The major alkaloid from the seeds of Lupinus exaltatus, L. mexicanus and L. rotundiflorus, it is among the most important of the tetracyclic quinolizidine alkaloids. It is a quinolizidine alkaloid, a tertiary amine and a delta-lactam. It is a conjugate base of a lupanine(1+). It derives from a hydride of a sparteine.
(1S,2R,9S,10S)-7,15-diazatetracyclo[7.7.1.02,7.010,15]heptadecan-6-one