The phytochemical study of M. polymnioides led to the isolation of two sesquiterpene lactones namely: 11alphaH-dihydrozaluzanin E and 1beta-hydroxy-4-oxo-11betaH-4-noreudesman-6,12-olide. Their structures were determined by spectroscopic methods. The relative stereochemistry was established by a combination of coupling constant analysis, NOESY correlations and molecular modeling. Three related known sesquiterpene lactones were also identified, and these data were used for chemotaxonomical purposes.
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| http://dx.doi.org/10.1016/j.phytochem.2004.08.009 | DOI Listing |
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