Ent-kauranes and other constituents of three Helianthus species |
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| Authors: | Werner Herz Palaniappan Kulanthaivel Kinzo Watanabe |
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| Affiliation: | Department of Chemistry, The Florida State University, Tallahassee, FL 32306, U.S.A. |
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| Abstract: | Aerial parts of Helianthus debilis subsp. cucumerifolius, H. occidentalis and H. simulans afforded a variety of known and some unknown ent-kauranoic acids. H. occidentalis gave, in addition, ciliaric acid and a new biogenetically related atisane derivative occidentalic acid. H. simulans gave the heliangolide leptocarpin and the flavone hymenoxin in addition to ent-kauranes. Several of the diterpenoids from these species inhibited larval growth of the sunflower moth. |
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| Keywords: | Compositae Heliantheae ciliaric acid occidentalic acid heliangolide flavone larval growth inhibitors. |
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