Three sesquiterpene lactones from Helianthus niveus subsp. canescens and H. argophyllus |
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| Authors: | Keisuke Watanabe Nobuo Ohno Tom J Mabry |
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| Institution: | 1. The Department of Botany, The University of Texas at Austin, Austin, TX 78713-7640, U.S.A. |
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| Abstract: | Further investigation of the minor terpenoids in Helianthus niveus subsp. canescens and H. argophyllus afforded two known 12,8-fused sesquiterpene lactones, 3-acetylchamissonin and simsiolide as well as one new germacranolide, argophyllin C. Identification and structure elucidation of these lactones by 1H NMR and chemical transformations are described. |
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| Keywords: | Heliantheae Compositae germacranolide 3-acetylchamissonin simsiolide argophyllin C |
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