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Wollenweber E, Dörr M, Christ M. Flavonoid Aglycones from the Leaf and Stem Exudates of Some Geraniaceae Species. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Six species of Pelargonium and one species of Geranium were studied for their surface flavonoids. Some of them were found to exhibit an unexpectedly high number of methylated flavonoids, mostly flavonols. The chemotaxonomic significance of exudate flavonoid diversification is shortly addressed.
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Affiliation(s)
- Eckhard Wollenweber
- Institut für Botanik der TU Darmstadt, Schnittspahnstrasse 3, D-64287 Darmstadt, Germany
| | - Marion Dörr
- Institut für Botanik der TU Darmstadt, Schnittspahnstrasse 3, D-64287 Darmstadt, Germany
| | - Matthias Christ
- Institut für Botanik der TU Darmstadt, Schnittspahnstrasse 3, D-64287 Darmstadt, Germany
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Wollenweber E, Wehde R, Christ M, Dörr M. Surface Flavonoids in Catalpa Ovata, Greyia Sutherlandii and Paulownia Tomentosa. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800300810] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Exudate flavonoids have been found on the green fruits of Catalpa ovata (Bignoniaceae) and Paulownia tomentosa (Scrophulariaceae) and on the leaf surfaces of Greyia sutherlandii (Melianthaceae) and Paulownia tomentosa, respectively. The flavonoid aglycones are mostly flavone and flavonol methyl ethers, including some rare natural products. Several flavanones and 2 dihydrochalcones have also been detected, the flavanones produced by Paulownia being geranylated products. The occurrence of exudate flavonoids on fruit tissue has been rarely noticed in the past.
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Affiliation(s)
- Eckhard Wollenweber
- Institut für Botanik der TU Darmstadt, D-64287 Darmstadt, Schnittspahnstrasse 3, Germany
| | - Rüdiger Wehde
- Institut für Botanik der TU Darmstadt, D-64287 Darmstadt, Schnittspahnstrasse 3, Germany
| | - Matthias Christ
- Institut für Botanik der TU Darmstadt, D-64287 Darmstadt, Schnittspahnstrasse 3, Germany
| | - Marion Dörr
- Institut für Botanik der TU Darmstadt, D-64287 Darmstadt, Schnittspahnstrasse 3, Germany
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