Showing papers by "Tom J. Mabry published in 1980"
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76 citations
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TL;DR: Three new heliangolides (niveusin-A, -B and -C) were isolated and characterized from a CHCl 3 extract of Helianthus niveus and the structures were deduced by 1 H and 13 C NMR as well as extensive decoupling experiments and derivatizations.
59 citations
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TL;DR: Dehydrodesacetylmatricarin, achillin, parishin-C, vulgarin and artecanin were isolated from A. ludoviciana var. as discussed by the authors.
40 citations
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TL;DR: In this article, six new and nine known flavonoids were obtained from Neurolaena oaxacana, including axillarin, nodifloretin, 6-hydroxyluteolin 7-glucoside, kaempferol 3,7-dimethyl ether, quercetagetin 3, 7-sulfate and patulitrin.
39 citations
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TL;DR: Brickellia chlorolepis has been used to identify eleven flavonoids including three new glycosides including one new and nine known compounds from B. dentata as mentioned in this paper.
38 citations
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TL;DR: Three new and eight known flavonols, all containing 6-methoxyl groups, were isolated from Brickellia veronicaefolia as discussed by the authors, and the new compounds were eupatolitin 3-sulfate, 6methoxyquercetin 7,3′-dimethyl ether (veronicafolin) 3-digalactoside and veronicafolis 3-Sulfate.
32 citations
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14 citations
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TL;DR: Variability among flavonoid complements supports the polyphyletic interpretation of the genus Haplopappus and supports the idea that primitive woody taxa and high base chromosome numbers among Haplipappus segregates are correlated with primitive woodY taxa.
11 citations
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9 citations
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TL;DR: In this article, 15 flavonoids were isolated from Trichophorum cespitosum including two new di-C -glycosylflavones, 6- C -arabinosyl-8- C-glucosylchr.
6 citations
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TL;DR: The distribution of flavonols based on quercetin and kaempferol in the leaves of Zaluzania supports phyletic interpretations based on morphology and cytology.