Arilpropan?ides em Embryobionta
Ano de defesa: | 1975 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal Rural do Rio de Janeiro
|
Programa de Pós-Graduação: |
Programa de P?s-Gradua??o em Qu?mica
|
Departamento: |
Instituto de Ci?ncias Exatas
|
País: |
Brasil
|
Palavras-chave em Português: | |
Área do conhecimento CNPq: | |
Link de acesso: | https://tede.ufrrj.br/jspui/handle/jspui/4351 |
Resumo: | Lignins are among the most abundant organic products on earth. Their polyarylpropanoid molecules were, for this reason, subject of many investigations. In opposition, relatively little is known about bisarylpropanoids (lignans, neolignans) and arylpropanoids (propenylphenols, allylphenols). These metabolites function in Embryobionta as social hormones. Their evolutive potentiation led to the derivatives of the biogenetic group of benzyltetrahydroisoquinoline. Mapping of the biosynthetic routes which lead to these alcaloids (in previous work), as well as to mono- and bisarylpropanoids, starts from phenylalanine and makes possible not only the classification, but also the rational codification of all skeleta involved. The analysis of the aromatic oxygenation pattern of each of the classes of lignans and neolignans suggests details of the oxidative coupling mechanisms. In the case of propenylphenols and allylphenols, such an analysis, associated with consideration of the natural distribution of the derivatives, does not corroborate in vivo evidence on the biosynthesis of allylphenols, recently obtained in Italy. The structural variation, of lignins, lignans, and neolignans through 350 x 106 years of plant evolution can be accompanied, paying attention to one of the basic principles of Biochemical Systematics: evolution of a biogenetic group of metabolites operates through gradual diversification of skeleta and their derivatives up to a maximum, initiating, in sequence, gradual retraction of the number of skeleta and number of corresponding derivatives. The different classes of arylpropanoids, can, for this reason, in combination with the benzyltetrahydroisoquinoline group, be used as chemosystematic markers, a fact which, in the present case, served to suggest the singular taxonomic position of the subclass Magnoliidae and the phylogenetic relation of its families. |
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Rezende, Ceres Maria Andrade da MataGottlieb, Otto RichardRezende, Ceres Maria Andrade da Matahttp://lattes.cnpq.br/3354457350968761Marx, Maria Claudia2021-01-27T17:20:53Z1975-06-27MARX, Maria Claudia. Arilpropan?ides em Embryobionta. 1975. 127 f. Disserta??o (Programa de P?s-Gradua??o em Qu?mica) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1975.https://tede.ufrrj.br/jspui/handle/jspui/4351Lignins are among the most abundant organic products on earth. Their polyarylpropanoid molecules were, for this reason, subject of many investigations. In opposition, relatively little is known about bisarylpropanoids (lignans, neolignans) and arylpropanoids (propenylphenols, allylphenols). These metabolites function in Embryobionta as social hormones. Their evolutive potentiation led to the derivatives of the biogenetic group of benzyltetrahydroisoquinoline. Mapping of the biosynthetic routes which lead to these alcaloids (in previous work), as well as to mono- and bisarylpropanoids, starts from phenylalanine and makes possible not only the classification, but also the rational codification of all skeleta involved. The analysis of the aromatic oxygenation pattern of each of the classes of lignans and neolignans suggests details of the oxidative coupling mechanisms. In the case of propenylphenols and allylphenols, such an analysis, associated with consideration of the natural distribution of the derivatives, does not corroborate in vivo evidence on the biosynthesis of allylphenols, recently obtained in Italy. The structural variation, of lignins, lignans, and neolignans through 350 x 106 years of plant evolution can be accompanied, paying attention to one of the basic principles of Biochemical Systematics: evolution of a biogenetic group of metabolites operates through gradual diversification of skeleta and their derivatives up to a maximum, initiating, in sequence, gradual retraction of the number of skeleta and number of corresponding derivatives. The different classes of arylpropanoids, can, for this reason, in combination with the benzyltetrahydroisoquinoline group, be used as chemosystematic markers, a fact which, in the present case, served to suggest the singular taxonomic position of the subclass Magnoliidae and the phylogenetic relation of its families.As ligninas figuram entre os mais abundantes produtos org?nicos na Terra. Suas mol?culas poliarilpropano?dicas foram por isto objetivo de muitos estudos. Em contraste, ? diminuto o n?mero de informa??es sobre bisarilpropan?ides (lignanas, neolignanas) e arilpropan?ides (propenilfen?is, alilfen?is). Estes metab?litos desempenham em Embryobionta papel de horm?nios sociais. Sua potencia??o evolutiva levou aos derivados do grupo biogen?tico da benziltetrahidroisoquinolina. O mapeamento dos caminhos biossint?ticos, que leva a estes alcal?ides (efetuado em trabalho anterior), como aos mono- e bisarilpropan?ides parte da fenilalanina e permite n?o s? a classifica??o, como ainda a codifica??o racional de todos os esqueletos envolvidos. O estudo do padr?o de oxigena??o arom?tico de cada uma das classes de lignanas e de neolignanas revela min?cias do mecanismo do acoplamento oxidativo. No caso de propenilfen?is e alilfen?is, tal estudo, associado ? considera??o da distribui??o natural dos derivados, n?o ap?ia evidentemente, a bioss?ntese de alilfen?is obtida recentemente in vivo na It?lia, A varia??o estrutural de ligninas, lignanas e neolignanas atrav?s de 350 x 106 anos de evolu??o vegetal, pode ser acompanhada, atentando para um dos princ?pios b?sicos da Sistem?tica Bioqu?mica: evolu??o de um grupo biogen?tico de metab?litos opera por gradual diversifica??o de esqueletos e de seus derivados at? um m?ximo, iniciando-se a seguir, retra??o em n?mero de esqueletos e n?mero de derivados correspondentes. Por esta raz?o, podem as diversas classes de arilpropan?ides serem utilizadas, em conjunto com o grupo da benziltetrahidroisoquinolina, como marcadores quimiossistem?ticos, fato que, no caso presente, serviu para destacar a posi??o taxon?mica singular da subclasse Magnoliidae e a rela??o filogen?tica de suas fam?lias.Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2021-01-27T17:20:53Z No. of bitstreams: 1 1975 - Maria Cl?udia Marx.pdf: 1878078 bytes, checksum: 4ef9de9b01d64983be2ff22d8415de4b (MD5)Made available in DSpace on 2021-01-27T17:20:53Z (GMT). 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dc.title.por.fl_str_mv |
Arilpropan?ides em Embryobionta |
title |
Arilpropan?ides em Embryobionta |
spellingShingle |
Arilpropan?ides em Embryobionta Marx, Maria Claudia Embryobionta Arilpropanoides Lignoides Alil- e propenilfen?is Quimiosistematica Qu?mica |
title_short |
Arilpropan?ides em Embryobionta |
title_full |
Arilpropan?ides em Embryobionta |
title_fullStr |
Arilpropan?ides em Embryobionta |
title_full_unstemmed |
Arilpropan?ides em Embryobionta |
title_sort |
Arilpropan?ides em Embryobionta |
author |
Marx, Maria Claudia |
author_facet |
Marx, Maria Claudia |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Rezende, Ceres Maria Andrade da Mata |
dc.contributor.advisor-co1.fl_str_mv |
Gottlieb, Otto Richard |
dc.contributor.referee1.fl_str_mv |
Rezende, Ceres Maria Andrade da Mata |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3354457350968761 |
dc.contributor.author.fl_str_mv |
Marx, Maria Claudia |
contributor_str_mv |
Rezende, Ceres Maria Andrade da Mata Gottlieb, Otto Richard Rezende, Ceres Maria Andrade da Mata |
dc.subject.por.fl_str_mv |
Embryobionta Arilpropanoides Lignoides Alil- e propenilfen?is Quimiosistematica |
topic |
Embryobionta Arilpropanoides Lignoides Alil- e propenilfen?is Quimiosistematica Qu?mica |
dc.subject.cnpq.fl_str_mv |
Qu?mica |
description |
Lignins are among the most abundant organic products on earth. Their polyarylpropanoid molecules were, for this reason, subject of many investigations. In opposition, relatively little is known about bisarylpropanoids (lignans, neolignans) and arylpropanoids (propenylphenols, allylphenols). These metabolites function in Embryobionta as social hormones. Their evolutive potentiation led to the derivatives of the biogenetic group of benzyltetrahydroisoquinoline. Mapping of the biosynthetic routes which lead to these alcaloids (in previous work), as well as to mono- and bisarylpropanoids, starts from phenylalanine and makes possible not only the classification, but also the rational codification of all skeleta involved. The analysis of the aromatic oxygenation pattern of each of the classes of lignans and neolignans suggests details of the oxidative coupling mechanisms. In the case of propenylphenols and allylphenols, such an analysis, associated with consideration of the natural distribution of the derivatives, does not corroborate in vivo evidence on the biosynthesis of allylphenols, recently obtained in Italy. The structural variation, of lignins, lignans, and neolignans through 350 x 106 years of plant evolution can be accompanied, paying attention to one of the basic principles of Biochemical Systematics: evolution of a biogenetic group of metabolites operates through gradual diversification of skeleta and their derivatives up to a maximum, initiating, in sequence, gradual retraction of the number of skeleta and number of corresponding derivatives. The different classes of arylpropanoids, can, for this reason, in combination with the benzyltetrahydroisoquinoline group, be used as chemosystematic markers, a fact which, in the present case, served to suggest the singular taxonomic position of the subclass Magnoliidae and the phylogenetic relation of its families. |
publishDate |
1975 |
dc.date.issued.fl_str_mv |
1975-06-27 |
dc.date.accessioned.fl_str_mv |
2021-01-27T17:20:53Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MARX, Maria Claudia. Arilpropan?ides em Embryobionta. 1975. 127 f. Disserta??o (Programa de P?s-Gradua??o em Qu?mica) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1975. |
dc.identifier.uri.fl_str_mv |
https://tede.ufrrj.br/jspui/handle/jspui/4351 |
identifier_str_mv |
MARX, Maria Claudia. Arilpropan?ides em Embryobionta. 1975. 127 f. Disserta??o (Programa de P?s-Gradua??o em Qu?mica) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1975. |
url |
https://tede.ufrrj.br/jspui/handle/jspui/4351 |
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por |
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por |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Federal Rural do Rio de Janeiro |
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Programa de P?s-Gradua??o em Qu?mica |
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UFRRJ |
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Brasil |
dc.publisher.department.fl_str_mv |
Instituto de Ci?ncias Exatas |
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Universidade Federal Rural do Rio de Janeiro |
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