Modified eudesmanolides and other sesquiterpene lactones from Wunderlichia mirabilis and Actinoseris polymorpha |
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Authors: | Ferdinand Bohlmann Christa Zdero Harold Robinson Robert M King |
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Institution: | 1. Institute for Organic Chemistry, Technical University Berlin, D-1000 Berlin 12, West Germany |
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Abstract: | Re-investigation of Wunderlichia mirabilis afforded three new modified eudesmanolides of the same type isolated previously from an Onoseris species, and minute amounts of a germacranolide for which a structure only could be proposed. Actinoseris polymorpha also contained a new germacranolide, the angetate of desacetyllaurenobiolide. Structures were elucidated by spectroscopic methods and by some chemical transformations. The significance of these findings is discussed briefly. |
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Keywords: | Compositae Mutisieae sesquiterpene lactones modified eudesmanolides germacranolides |
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