The flavonoids of tetragonotheca (compositae) |
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| Authors: | John D. Bacon Lowell E. Urbatsch Louis H. Bragg Tom J. Mabry Paula Neuman David W. Jackson |
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| Affiliation: | 1. Department of Biology, The University of Texas at Arlington, Arlington, TX 76019, U.S.A.;2. Department of Botany, Louisiana State University, Baton Rouge, LA 70803, U.S.A.;3. The Department of Botany, The University of Texas at Austin, Austin, TX 78712, U.S.A. |
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| Abstract: | Fifteen flavonols, five aglycones and ten glucosides were isolated from the four species of Tetragonotheca, T. repanda, T. helianthoides, T. texana and T. ludoviciana. Included among the isolated flavonols are four previously unreported 7-O-glucosides, 6-hydroxykaempferol 7-O-glucoside, 6-hydroxykaempferol 6-methyl ether 7-O-glucoside, quercetagetin 6,3′-dimethyl ether 7-O-glucoside and quercetagetin 3,6-dimethyl ether 7-O-glucoside. |
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| Keywords: | Compositae Heliantheae 6-hydroxyflavonols |
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