Adalinine, a New Piperidine Alkaloid from the Ladybird Beetles <i>Adalia</i> <i>bipunctata</i> and <i>Adalia </i><i>decempunctata</i>

Abstract

Adalinine (2), a new piperidine alkaloid, has been isolated from the European two-spotted ladybird beetle Adalia bipunctata, and its structure has been determined by spectroscopic methods. This alkaloid was also shown to be present in all the life cycle stages of Adalia bipunctata as well as in the adults of a related species, A. decempunctata.