Flavonoids of fossil miocene Platanus and its extant relatives |
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| Affiliation: | 1. Department of Pharmacognosy and Herbal and Traditional Medicines Research Center, School of Pharmacy, Haft-Bagh Blvd., P.O. Box 7616911319, Kerman, Iran;2. Department of Pharmaceutics and Pharmaceutics Research Center, Neuropharmacology Institute, School of Pharmacy, Haft-Bagh Blvd., P.O. Box 7616911319, Kerman, Iran;3. Research Center for Hydatid Disease in Iran, Kerman University of Medical Sciences, P.O. Box 7616914111, Kerman, Iran;4. Department of Pharmacology & Toxicology, School of Pharmacy, Kerman University of Medical Sciences, P.O. Box 7616911319, Kerman, Iran;5. Gastroenterology and Hepatology Research Center, Afzalipour”s Hospital, Imam Highway, P.O. Box 7616913911, Kerman, Iran;1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China;2. General Atomics, San Diego, CA, 92186-5608, USA;1. Department of Mechanical Engineering, Ames, Iowa, Iowa 50011, United States;2. Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa, Iowa 50011, United States |
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| Abstract: | Flavonoids of seven extant Platanus species and a fossil Platanus species from the Miocene Clarkia Flora of northern Idaho were compared. Sixteen flavonoids were isolated of which 15 were either wholly or partially identified. Flavonoids of Platanus are based on kaempferol and quercetin and most glycosides are linked at position 3. Because of an extremely high degree of overall chemical similarity and the presence of minor variation within some species, flavonoid data were of limited value in clarifying relationships among extant species. Flavonoid data suggest a closer chemical similarity of the fossil Platanus species to the Asiatic P. orientalis, rather than to the six investigated North American species. Morphologically, however, the fossil Platanus is very similar to P.occidentalis from eastern North America. These findings are similar to those reported in a paleobiochemical study of a fossil Liriodendron species from the same Miocene Flora. |
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