Paper, D. and Franz, Gerhard (1989) Glycosylation of Cardenolide Aglycones in the Leaves of Nerium oleander L. Planta Medica 55, pp. 30-34.
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Application of [14C]-progesterone to the leaves of Nerium oleander L. (Apocynaceae) resulted in the formation of [14C]-digitoxigenin and [14C]-oleandrigenin glycosides; the labelled aglycones were obtained after hydrolysis from the cardenolide extract. Both radioactive cardenolide aglycones were further transformed by the leaves of Nerium oleander L. to the corresponding 3-O-β-glucosides digitoxigenin glucoside and oleandrigenin glucoside. It could be shown that both cardenolide glucosides are genuine constituents of the cardenolide fraction of Nerium oleander L. leaves. The structures of these newly identified compounds were verified by 1H-NMR and FAB+ mass spectroscopy and by enzymatic cleavage of the glycosidic bond with a β-glucosidase from Helix pomatia.
|Institutions:||Chemistry and Pharmacy > Institute of Pharmacy > Retired Professors > Prof. Franz|
|Subjects:||500 Science > 540 Chemistry & allied sciences|
500 Science > 570 Life sciences
|Created at the University of Regensburg:||Unknown|
|Deposited On:||09 Nov 2011 10:00|
|Last Modified:||09 Nov 2011 10:00|