Isoflavone,wax and triterpene constituents of Wyethia mollis |
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Authors: | Thomas G Waddell Mark H Thomasson Michael W Moore Houston W White Dorothy Swanson-Bean Margaret E Green Gene S Van Horn Henry M Fales |
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Institution: | 1. Department of Biology, University of Tennessee, Chattanooga, TN 37402, U.S.A.;2. National Heart and Lung Institute, National Institutes of Health, Bethesda, MD 20014, U.S.A. |
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Abstract: | The hexane extract of Wyethia mollis contains the n-alkanes C15-C18, C20-C25, C27 and C29. Linoleic acid was the only detectable acidic component. A mass spectral analysis of the wax ester fraction indicated that it was a mixture of homologues, the saturated even-carbon acids n-C16-C30 esterfield with the saturated even-carbon alcohols n-C18-C26. The chloroform extract yielded the known isoflavones santal and 3′-O-methylorobol along with a new lanostane-type triterpene, 22,25-epoxy-lanosta-7:9(11)-dien-3-one. The wide distribution of n-alkanes and the decreased odd-even carbon ratio are consistent with the proposed primitive nature of this plant. |
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Keywords: | Compositae wax esters isoflavones santal new triterpene 22 25-epoxylanota-7:9(11)-dien-3-one |
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