1982
DOI: 10.1007/978-3-642-68641-2
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Micromolecular Evolution, Systematics and Ecology

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Cited by 84 publications
(46 citation statements)
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“…The widespread occurrence and variation in oxidation pattern has been used by some workers to compute cladograms for taxonomic analysis. In their approach, Rezende and Gottlieb (1973) and Gottlieb (1982) consider the xanthones from Guttiferae (Clusiaceae) and Gentianaceae as a single entity with a common biosynthetic pathway to the compounds. From a frequency count, they come to the conclusion that the 1,3,5,6-and 1,3,6,7-tetraoxygenation patterns are the primitive state, and using these criteria they calculate scores for reduction and oxygenation in the A-and the Bring.…”
Section: Resultsmentioning
confidence: 99%
“…The widespread occurrence and variation in oxidation pattern has been used by some workers to compute cladograms for taxonomic analysis. In their approach, Rezende and Gottlieb (1973) and Gottlieb (1982) consider the xanthones from Guttiferae (Clusiaceae) and Gentianaceae as a single entity with a common biosynthetic pathway to the compounds. From a frequency count, they come to the conclusion that the 1,3,5,6-and 1,3,6,7-tetraoxygenation patterns are the primitive state, and using these criteria they calculate scores for reduction and oxygenation in the A-and the Bring.…”
Section: Resultsmentioning
confidence: 99%
“…As médias dos NOX de todas as ocorrências de uma classe química, em um taxon, representam o AEO (Avanço Evolutivo em Relação a Oxidação) desse taxon, para um determinado tipo de metabólito 13 . Geralmente costuma-se dividir o parâmetro 'NOX' pelo número de átomos de carbonos de cada molécula resultando o parâmetro índice de oxidação (IO).…”
Section: Métodosunclassified
“…O uso em conjunto dos índices quimiotaxonômicos para diferentes classes químicas impossibilita a comparação dos números de oxidação 13 . Esses fatos estimularam uma revisão e adaptação da metodologia descrita na literatura 13 . Foi elaborado um novo parâmetro denominado 'passo oxidativo'.…”
Section: Métodosunclassified
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