The structure of 3-
![](/images/gifchars/beta2.gif)
-hydroxylupa
nine, a major alkaloid isolated fromthe seeds of
Lupinus mutabilisS., was unequivocally established through dedicated
1H and
13C NMR experiments, thus revealinga novel general strategy for error-free structural assignment of lupinealkaloids.Keywords: Lupinus mutabilis; Leguminosae; structural analysis; quinolizidinealkaloids; NMR