Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis

Detalhes bibliográficos
Autor(a) principal: Miranda, Carlos Alberto Silva
Data de Publicação: 1979
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFRRJ
Texto Completo: https://tede.ufrrj.br/jspui/handle/jspui/4347
Resumo: Three compounds were isolated from the ethanolic extract of the trunk wood of Sapotacea n? 250 -(INPA). Two Steroids: sitosterol and 3-0-B-glycosilspinasterol. The structure of the other compound was not determined because of the small amount isolated. The benzenic extract of Tovomita brasiliensis, Guttiferae, gave seven compounds. Two dihydroisocumarins: 8-hydroxy-3,5-dimetyl -3,4-dihydroisocumarin (Tb-6) and 8-hydroxy-5-metoxy-3-metil--3,4-dihydroisocumarin (Tb-1); one isocumarin: 7-cloro-8-hidroxy--6-metoxy-3-metilisocumarin (Tb-5); one xanthone: 1,5-dihydroxy--6,7-dimetoxixanthone (Tb-3); one triterpene: betulinic acid (Tb-4); one steroid: sitosterol (Tb-2) and one glycoside. The structures of their glycoside was not elucidated. A review of the 13CNMR was described and used for the structural determination of 1,5-dihydroxy-6,7-dimetoxyxanthone. The extracts were fractionated by chromtography. The structures were elucidated on the basis of spectral data and chemical transformations. A biosynthetic study of xanthones was useful in onder to suggest a biosynthetic path for the isolated xanthone from Tovomita brasiliensis.
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spelling Braz Filho, RaimundoGottlieb, Otto RichardBraz Filho, RaimundoMiranda, Carlos Alberto Silva2021-01-26T17:38:41Z1979-12-14MIRANDA, Carlos Alberto Silva. Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis. 1979. 193 f. Disserta??o (Mestrado em Qu?mica) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1979.https://tede.ufrrj.br/jspui/handle/jspui/4347Three compounds were isolated from the ethanolic extract of the trunk wood of Sapotacea n? 250 -(INPA). Two Steroids: sitosterol and 3-0-B-glycosilspinasterol. The structure of the other compound was not determined because of the small amount isolated. The benzenic extract of Tovomita brasiliensis, Guttiferae, gave seven compounds. Two dihydroisocumarins: 8-hydroxy-3,5-dimetyl -3,4-dihydroisocumarin (Tb-6) and 8-hydroxy-5-metoxy-3-metil--3,4-dihydroisocumarin (Tb-1); one isocumarin: 7-cloro-8-hidroxy--6-metoxy-3-metilisocumarin (Tb-5); one xanthone: 1,5-dihydroxy--6,7-dimetoxixanthone (Tb-3); one triterpene: betulinic acid (Tb-4); one steroid: sitosterol (Tb-2) and one glycoside. The structures of their glycoside was not elucidated. A review of the 13CNMR was described and used for the structural determination of 1,5-dihydroxy-6,7-dimetoxyxanthone. The extracts were fractionated by chromtography. The structures were elucidated on the basis of spectral data and chemical transformations. A biosynthetic study of xanthones was useful in onder to suggest a biosynthetic path for the isolated xanthone from Tovomita brasiliensis.Do extrato etan?lico do tronco da madeira da Sapot?cea n? 250 (INPA) foram isoladas tr?s subst?ncias, sendo 2 ester?ides: sitosterol e 3-0-B-glucosilespinasterol. A estrutura da outra subst?ncia n?o foi determinada devido a pequena quantidade isolada. Elabora??o do extrato benz?nico de Tovomita brasiliensis, Gutt?fera, forneceu 7 subst?ncias. Duas dihidroisocumarinas: 8-hidroxi-3,5-dimetil-3,4-dihidroisocumarina (Tb-6) e 8-hidroxi -5-metoxi-3-metil-3,4-dihidroisocumarina (Tb-1); uma isocumarina: 7-cloro-8-hidroxi-6metoxi-3-metilisocumarina; uma xantona: 1,5-dihidroxi-6,7-dimetoxixantona (Tb-3); um triterpeno: ?cido betul?nico (Tb-4); um esterol: sitosterol (Tb-2) e um glicos?deo cuja estrutura n?o foi definida. Uma revis?o sobre r.m.n.13C, serviu de apoio para o estabelecimento da estrutura da xantona. M?todos cromatogr?ficos foram utilizados no trabalho de isolamento das subst?ncias. As estruturas foram elucidadas com base na interpreta??o de dados espectrais das subst?ncias e de seus derivados, obtidos por acetila??o, metila??o e hidr?lise. Um estudo bioss?ntese de xantonas serviu para sugerir um caminho biossint?tico para a xantona isolada de Tovomita brasiliensis.Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2021-01-26T17:38:41Z No. of bitstreams: 1 1979 - Carlos Alberto Silva Miranda.pdf: 5624274 bytes, checksum: 12bae1d8b96a214e51c3811cfdf9b15d (MD5)Made available in DSpace on 2021-01-26T17:38:41Z (GMT). No. of bitstreams: 1 1979 - Carlos Alberto Silva Miranda.pdf: 5624274 bytes, checksum: 12bae1d8b96a214e51c3811cfdf9b15d (MD5) Previous issue date: 1979-12-14Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq)application/pdfhttps://tede.ufrrj.br/retrieve/63853/1979%20-%20Carlos%20Alberto%20Silva%20Miranda.pdf.jpgporUniversidade Federal Rural do Rio de JaneiroPrograma de P?s-Gradua??o em Qu?micaUFRRJBrasilInstituto de Ci?ncias ExatasTovomita brasiliensisSapot?ceaestudo qu?micoXantonasM?todos cromatogr?ficosQu?micaEstudo qu?mico de uma sapot?cea e de Tovomita brasiliensisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRRJinstname:Universidade Federal Rural do Rio de Janeiro (UFRRJ)instacron:UFRRJTHUMBNAIL1979 - Carlos Alberto Silva Miranda.pdf.jpg1979 - Carlos Alberto Silva Miranda.pdf.jpgimage/jpeg1755http://localhost:8080/tede/bitstream/jspui/4347/4/1979+-+Carlos+Alberto+Silva+Miranda.pdf.jpgfffd54f2294e8ab1392ce9ec813d53b5MD54TEXT1979 - Carlos Alberto Silva Miranda.pdf.txt1979 - Carlos Alberto Silva Miranda.pdf.txttext/plain94408http://localhost:8080/tede/bitstream/jspui/4347/3/1979+-+Carlos+Alberto+Silva+Miranda.pdf.txtedacaaaf416872c22ba9db1154faa6a4MD53ORIGINAL1979 - Carlos Alberto Silva Miranda.pdf1979 - Carlos Alberto Silva Miranda.pdfapplication/pdf5624274http://localhost:8080/tede/bitstream/jspui/4347/2/1979+-+Carlos+Alberto+Silva+Miranda.pdf12bae1d8b96a214e51c3811cfdf9b15dMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82089http://localhost:8080/tede/bitstream/jspui/4347/1/license.txt7b5ba3d2445355f386edab96125d42b7MD51jspui/43472021-01-27 02:00:20.771oai:localhost: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Biblioteca Digital de Teses e Dissertaçõeshttps://tede.ufrrj.br/PUBhttps://tede.ufrrj.br/oai/requestbibliot@ufrrj.br||bibliot@ufrrj.bropendoar:2021-01-27T04:00:20Biblioteca Digital de Teses e Dissertações da UFRRJ - Universidade Federal Rural do Rio de Janeiro (UFRRJ)false
dc.title.por.fl_str_mv Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
title Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
spellingShingle Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
Miranda, Carlos Alberto Silva
Tovomita brasiliensis
Sapot?cea
estudo qu?mico
Xantonas
M?todos cromatogr?ficos
Qu?mica
title_short Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
title_full Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
title_fullStr Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
title_full_unstemmed Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
title_sort Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis
author Miranda, Carlos Alberto Silva
author_facet Miranda, Carlos Alberto Silva
author_role author
dc.contributor.advisor1.fl_str_mv Braz Filho, Raimundo
dc.contributor.advisor-co1.fl_str_mv Gottlieb, Otto Richard
dc.contributor.referee1.fl_str_mv Braz Filho, Raimundo
dc.contributor.author.fl_str_mv Miranda, Carlos Alberto Silva
contributor_str_mv Braz Filho, Raimundo
Gottlieb, Otto Richard
Braz Filho, Raimundo
dc.subject.por.fl_str_mv Tovomita brasiliensis
Sapot?cea
estudo qu?mico
Xantonas
M?todos cromatogr?ficos
topic Tovomita brasiliensis
Sapot?cea
estudo qu?mico
Xantonas
M?todos cromatogr?ficos
Qu?mica
dc.subject.cnpq.fl_str_mv Qu?mica
description Three compounds were isolated from the ethanolic extract of the trunk wood of Sapotacea n? 250 -(INPA). Two Steroids: sitosterol and 3-0-B-glycosilspinasterol. The structure of the other compound was not determined because of the small amount isolated. The benzenic extract of Tovomita brasiliensis, Guttiferae, gave seven compounds. Two dihydroisocumarins: 8-hydroxy-3,5-dimetyl -3,4-dihydroisocumarin (Tb-6) and 8-hydroxy-5-metoxy-3-metil--3,4-dihydroisocumarin (Tb-1); one isocumarin: 7-cloro-8-hidroxy--6-metoxy-3-metilisocumarin (Tb-5); one xanthone: 1,5-dihydroxy--6,7-dimetoxixanthone (Tb-3); one triterpene: betulinic acid (Tb-4); one steroid: sitosterol (Tb-2) and one glycoside. The structures of their glycoside was not elucidated. A review of the 13CNMR was described and used for the structural determination of 1,5-dihydroxy-6,7-dimetoxyxanthone. The extracts were fractionated by chromtography. The structures were elucidated on the basis of spectral data and chemical transformations. A biosynthetic study of xanthones was useful in onder to suggest a biosynthetic path for the isolated xanthone from Tovomita brasiliensis.
publishDate 1979
dc.date.issued.fl_str_mv 1979-12-14
dc.date.accessioned.fl_str_mv 2021-01-26T17:38:41Z
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dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv MIRANDA, Carlos Alberto Silva. Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis. 1979. 193 f. Disserta??o (Mestrado em Qu?mica) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1979.
dc.identifier.uri.fl_str_mv https://tede.ufrrj.br/jspui/handle/jspui/4347
identifier_str_mv MIRANDA, Carlos Alberto Silva. Estudo qu?mico de uma sapot?cea e de Tovomita brasiliensis. 1979. 193 f. Disserta??o (Mestrado em Qu?mica) - Instituto de Ci?ncias Exatas, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1979.
url https://tede.ufrrj.br/jspui/handle/jspui/4347
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dc.publisher.program.fl_str_mv Programa de P?s-Gradua??o em Qu?mica
dc.publisher.initials.fl_str_mv UFRRJ
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Instituto de Ci?ncias Exatas
publisher.none.fl_str_mv Universidade Federal Rural do Rio de Janeiro
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ
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