Investigation of a betainic alkaloid from Punica granatum.
Spectroscopic investigations reveal that a hydroquinone pyridinium alkaloid isolated from the leaves of pomegranates Punica granatum L. (X-ray) exists as a mixture of a conjugated and a cross-conjugated heterocyclic mesomeric betaine in aqueous and DMSO-d6 solution. Twofold deprotonation yields an anionic tripole.
Schmidt
Andreas
A
Clausthal University of Technology, Institute of Organic Chemistry, Leibnizstrasse 6, D-38678 Clausthal-Zellerfeld, Germany. schmidt@ioc.tu-clausthal.de
Mordhorst
Thorsten
T
Nieger
Martin
M
D000470:Alkaloids / Q000737:chemistry*; D029561:Lythraceae / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure
D000470:Alkaloids