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Flavonoids from chemotypes of the goldback fern, Pityrogramma triangularis |
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| Authors: | Eckhard Wollenweber Volker H. Dietz Gerhard Schilling Jean Favre-Bonvin Dale M. Smith |
| Affiliation: | 1. Institut für Botanik der TH, D-6100 Darmstadt, West Germany;2. Organisch-Chemisches Institut der Universität, D-6900 Heidelberg, West Germany;3. Biologie Végétale, Université Claude Bernard Lyon-I, F-69622 Villeurbanne, France;4. Department of Biological Sciences, University of California, Santa Barbara, CA 93106, U.S.A. |
| Abstract: | More than 20 flavonoid aglycones were identified from the frond exudate of various collections of Pityrogramma triangularis. Ten of them are novel natural products; most of the others are rare flavonoids. They are substituted at C-8; many are C-methylated. They mostly occur only as trace constituents in var. triangularis. Two compounds come from var. viscosa. One population of P. triangularis var. triangularis exhibits a unique flavonoid pattern not encountered before in any other chemotype studied. |
| Keywords: | varieties chemotypes frond exudate flavonoid aglycones novel natural products. |
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