Sesquiterpenoid and acetylenic constituents of seven Clibadium species |
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Authors: | Horst Czerson Ferdinand Bohlmann Tod F. Stuessy N.H. Fischer |
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Affiliation: | 1. Institut für Organische Chemie der Technischen Universität Berlin, Straße des 17. Juni 135, D-1000 Berlin 12, W. Germany;2. Department of Botany, Ohio State University, Columbus, OH 43210, U.S.A.;3. Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, U.S.A. |
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Abstract: | The investigation of seven Clibadium species resulted in the isolation of a new germacrolide from C. surinamense, trans-β-bergamotene, a new sesquiterpene from C. asperum and a new C-17 acetylenic alcohol from C. glomeratum. Five known acetylenic compounds were present in some members of the genus. In good agreement with morphological data, the presence of ichthyothereol and its acetate in several members of Clibadium suggest affiliation with the genus Ichthyothere within the subtribe Milleriinae (Heliantheae-Compositae). |
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Keywords: | Compositae Heliantheae new germacrolide type sesquiterpene lactone new acetylenic alcohol new sesquiterpene hydrocarbon. |
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