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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

External Flavonoids in Two Grindelia Species

  • Barbara Timmermann , Eckhard Wollenweber , Marion Dörr , Sylvia Armbruster , Karin M. Valant-Vetschera and Eduardo R. Fuentes


A series of methylated flavonols and two methyl flavones have been identified in the exudate of the American gumweed species Grindelia glutinosa and Grindelia robusta. They resemble the flavonoid patterns observed in other species of this genus, which thus shows a tendency for accumulation of methylated flavonols.

Received: 1994-2-21
Published Online: 2014-6-2
Published in Print: 1994-6-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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