Stereochemistry of chapliatrin and its congeners from Liatris gracilis |
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| Authors: | Werner Herz Kinzo Watanabe John F. Blount |
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| Affiliation: | 1. Department of Chemistry, The Florida State University, Tallahassee, FL 32306, U.S.A.;2. Research Division, Hoffmann-La Roche Inc., Nutley, NJ 07110, U.S.A. |
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| Abstract: | Re-examination of Liatris gracilis afforded the known sesquiterpene lactones chapliatrin, isochapliatrin, acetlisochapliatrin, five new closely related 5,10-epoxygermacranolides and a new eudesmanolide. The stereochemistry of the 5,10-epoxygermacranolides has been settled by an X-ray analysis of isochapliatrin. |
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| Keywords: | Compositae Eupatorieae 5,10-epoxygermacranolides sesquiterpene lactones chapliatrin isochapliatrin X-ray analysis. |
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