New germacranolides and other sesquiterpene lactones from Dicoma species |
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| Authors: | Ferdinand Bohlmann Pahup Singh Jasmin Jakupovic |
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| Affiliation: | Institute for Organic Chemistry, Technical University of Berlin, D-1000 Berlin 12, West Germany |
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| Abstract: | Two subspecies of Dicoma anomala afforded, in addition to known compounds, an eudesmanolide, a guaianolide and four germacranolides, the latter being closely related 8, 12-lactones. D. schinzii gave three new germacranolides and D. zeyheri a pair of isomeric acetylenic compounds. The structures were elucidated by highfield 1H NMR spectroscopy. The chemotaxonomic situation of this genus is discussed briefly. |
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| Keywords: | Compositae Mutisieae sesquiterpene lactones germacranolides eudesmanolide guaianolide acetylenic compounds. |
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