Showing papers by "Tom J. Mabry published in 1983"
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TL;DR: Ten aglycones and six glycosides of luteolin and apigenin were identified from the leaves of Salvia palaestina Bentham (Labiatae) and cirsimaritin showed a high activity against Staphylococcus aureus and Escherichia coli.
Abstract: Ten aglycones and six glycosides of luteolin and apigenin were identified from the leaves of Salvia palaestina Bentham (Labiatae). Among them cirsimaritin showed a high activity against Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Klebsiella pneumoniae, Proteus vulgaris, and Pseudomonas aeruginosa, while the others have little or no activity against the same bacterial strains.
112 citations
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TL;DR: Among the classes of secondary compounds treated here, benzylisoquinoline alkaloids, iridoids and be–talains are shown to be the most important systematic markers used at present at higher levels of classification, although glucosinolates, polyacetylenes and some other types of alkaloid are also demonstrated to be valuable criteria for making taxonomic judgments above the family rank.
Abstract: The restricted distributions of some classes of secondary metabolites in the angiosperms make them valuable taxonomic characters in assessing systematic relationships at higher levels of classification. Yet, for several reasons, secondary metabolites have not, until recently, been widely used as taxonomic characters above the family level. In this paper, the distributions of a number of classes of secondary compounds are discussed with reference to four recently published systems of higher angiosperm classification: Cronquist's of 1981, Dahlgren's of 1980, Takhtajan's of 1980 and Thome's of 1981. Some of the problems faced in choosing and using secondary metabolite data for systematic purposes (including the effects of our increasing understanding of their functional significance) are covered as well. Among the classes of secondary compounds treated here, benzylisoquinoline alkaloids, iridoids and be–talains are shown to be the most important systematic markers used at present at higher levels of classification, although glucosinolates, polyacetylenes and some other types of alkaloids are also demonstrated to be valuable criteria for making taxonomic judgments above the family rank. In addition, certain terpenoids, flavonoids, phenolics, cyanogenic glycosides and non–protein amino acids are illustrated to be of systematic use in particular cases.
89 citations
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TL;DR: Two new salicyloyl and angeloyl esters of jaeschkeanadiol, together with the known benzoic, p -hydroxybenzoic and vanillic acid esters, were isolated from Ferula elaeochytris.
41 citations
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TL;DR: Subtype PIII sieve-element plastids, anthocyanins, spinulose, perforate-tectate pollen grains and the specific seed-coat sculpturing found in two Macarthuria species consolidate their placement within Molluginaceae.
Abstract: Subtype PIII sieve-element plastids, anthocyanins, spinulose, perforate-tectate pollen grains and the specific seed-coat sculpturing found in twoMacarthuria species (M. australis, M. neocambrica) consolidate their placement withinMolluginaceae. The unique form of the sieve-element plastids, i.e. with cubic crystals and starch grains (PIIIc″fs), finds its closest counter-part inLimeum. The multiple intertwinement of different genera of theMolluginaceae with many other centrospermous families led to a consideration of their more central position withinCaryophyllales.
22 citations
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TL;DR: In this article, four flavonoids, including two new compounds, were isolated from the leaf extract of Thymbra spicata, and the new compounds were the 7,3′-dimethyl and 7, 3′,4′-trimethyl ethers of 6-hydroxyluteolin.
21 citations
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TL;DR: Two known C -glycosylflavones, embinin and vicenin-2, were obtained from Siphonoglossa sessilis as discussed by the authors.
15 citations
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14 citations
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TL;DR: In this article, eleven c-glycosylflavones were isolated from the leaves of passiflora coactilis, including two new 4′-o-glucosides of 2″-rhamnosylorientin and 2″ rhamnosylon vitexin.
10 citations
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TL;DR: In this article, six c-glycosylflavones including two new compounds, 4′-o-rhamnosylswertisin and 4´o´o''n−swertiajaponin, were isolated from leaves of passiflora biflorea.
8 citations
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TL;DR: Eight identical 6-methylated flavonols including aglycones and glycosides were isolated from two geographically disjunction population of Brickellia cylindracea from Mount Livermore and Austin, Texas, suggesting that they are best treated as a single taxon.
8 citations
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TL;DR: In this article, three benzoylated quercetin glycosides were isolated from Delphinium carolinianum and two related glycolytes were partially characterized.