Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)

Detalhes bibliográficos
Autor(a) principal: Almeida, José Gustavo Lima de
Data de Publicação: 2011
Tipo de documento: Tese
Idioma: por
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/15677
Resumo: This work describes the chemical composition of the marine species Palythoa caribaeorum and Protopalythoa variabilis, both collected at Paracuru beach, state of Ceará. The cromatographic fractionation of the hexane extract from P. caribaeorum resulted in the isolation of four tetracyclic sterols possessing the ergostan skeleton: 24(R)-ergost-5-en-3b-ol (P-1); 5 a,8a-epidioxy-24(R)-ergost-6-en-3b-ol (P-2); 24(R)- ergost-5-en-3b,7a-diol (P-4) and 24(R)-7a-hydroperoxy-ergost-5-en-3b-ol (P-7), a glycerol derivative, 1-O-hexadecylglycerol (P-3) and four ceramides: N- (2S,3R,4E,8E,1,3-dihydroxy-4,8-octadecadienyl)hexadecanamide (P-5); N- (2S,3R,4E,1,3-dihydroxy-4-octadecenyl)hexadecanamide (P-6); N-[2S,3R,4E,8E,1-(2”- methylamino-ethanosulfonyl)-3-hydroxy-4,8-octadecaenyl]hexadecanamide (P-8) and N-[2S,3R,4E,1-(2”-methylaminoethano-sulfonyl)-3-hydroxy-4-octadecenyl]hexadecanamide (P-9). The cromatographic fractionation of the ethanol extract permited the isolation of a steroid, 24(R)-ergost-7-en-3b,5a,6b-triol (P-10) and a nucleoside 2- methyltimidine (P-11). Column chromatography of the hexane extract of P. variabilis led to the isolation of nonyl hexadecanoate (P-12), the sterol 24(R)-B-norergostan-3b- 5b-diol-6b-carboxylic acid (P-13) and the same chemical constituents previously isolated from P. caribaeorum (P-1, P-2, P-3 e P-4) including the four ceramides (P-5, P-6, P-8 e P-9). The citotoxic and antifungal properties of all ceramides were evaluated, nevertheless none of them showed any activity. All compounds were isolated through adsorption column cromatography over silica gel followed by high performance liquid chromatography. The structures of the isolated compounds were elucidated using spectrometric techniques, such as: GC/MS, HRESIMS, IR and NMR (1H, 13C and 15N) through 1D and 2D pulse sequences and, whenever the case, comparison with literature data
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spelling Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)Chemical Constituents of the zoanthids Palythoa caribaeorum (Duchassaing & Michelotti, 1860) and Protopalythoa variabilis (Duerden, 1898)Palythoa caribaeorumProtopalythoa variabilisThis work describes the chemical composition of the marine species Palythoa caribaeorum and Protopalythoa variabilis, both collected at Paracuru beach, state of Ceará. The cromatographic fractionation of the hexane extract from P. caribaeorum resulted in the isolation of four tetracyclic sterols possessing the ergostan skeleton: 24(R)-ergost-5-en-3b-ol (P-1); 5 a,8a-epidioxy-24(R)-ergost-6-en-3b-ol (P-2); 24(R)- ergost-5-en-3b,7a-diol (P-4) and 24(R)-7a-hydroperoxy-ergost-5-en-3b-ol (P-7), a glycerol derivative, 1-O-hexadecylglycerol (P-3) and four ceramides: N- (2S,3R,4E,8E,1,3-dihydroxy-4,8-octadecadienyl)hexadecanamide (P-5); N- (2S,3R,4E,1,3-dihydroxy-4-octadecenyl)hexadecanamide (P-6); N-[2S,3R,4E,8E,1-(2”- methylamino-ethanosulfonyl)-3-hydroxy-4,8-octadecaenyl]hexadecanamide (P-8) and N-[2S,3R,4E,1-(2”-methylaminoethano-sulfonyl)-3-hydroxy-4-octadecenyl]hexadecanamide (P-9). The cromatographic fractionation of the ethanol extract permited the isolation of a steroid, 24(R)-ergost-7-en-3b,5a,6b-triol (P-10) and a nucleoside 2- methyltimidine (P-11). Column chromatography of the hexane extract of P. variabilis led to the isolation of nonyl hexadecanoate (P-12), the sterol 24(R)-B-norergostan-3b- 5b-diol-6b-carboxylic acid (P-13) and the same chemical constituents previously isolated from P. caribaeorum (P-1, P-2, P-3 e P-4) including the four ceramides (P-5, P-6, P-8 e P-9). The citotoxic and antifungal properties of all ceramides were evaluated, nevertheless none of them showed any activity. All compounds were isolated through adsorption column cromatography over silica gel followed by high performance liquid chromatography. The structures of the isolated compounds were elucidated using spectrometric techniques, such as: GC/MS, HRESIMS, IR and NMR (1H, 13C and 15N) through 1D and 2D pulse sequences and, whenever the case, comparison with literature dataEste trabalho descreve a composição química das espécies marinha Palythoa caribaeorum e Protopalythoa variabilis, coletadas no município de Paracuru-CE. O fracionamento cromatográfico do extrato hexânico de P. caribaeorum, resultou no isolamento de quatro esteróides tetracíclico de esqueleto ergostano: 24(R)-ergost-5-en-3-ol (P-1); 5,8-epidioxi-24(R)-ergost-6-en-3-ol (P-2); 24(R)-ergost-5-en-3,7-diol (P-4) e 24(R)-7-hidroperoxi-ergost-5-en-3-ol (P-7), um derivado do glicerol, 1-O-hexadecilglicerol (P-3) e quatro ceramidas: N-(2S,3R,4E,8E,1,3-dihidroxi-4,8-octadecadieno)hexadecanamida (P-5); N-(2S,3R,4E,1,3-dihidroxi-4-octadeceno)-hexadecanamida (P-6), N-[2S,3R,4E,8E,1-(2”-metilamino-etanosulfonila)-3-hidroxi-4,8-octadeca¬dieno]hexadecanamida (P-8) e N-[2S,3R,4E,1-(2”-metilaminoetano-sulfonila)-3-hidroxi-4-octadeceno]hexadecanamida (P-9). Do fracionamento cromatográfico do extrato etanólico, foi possível isolar o esteróide 24(R)-ergost-7-en-3,56-triol (P-10) e o nucleosídeo 2-metil-timidina (P-11). Do estudo químico do extrato hexânico de P. variabilis obteve-se os mesmos constituintes químicos isolados de P. caribaeorum (P-1, P-2, P-3 e P-4) e as quatro ceramidas (P-5, P-6, P-8 e P-9). Além destes compostos foi isolado um éster de cadeia alifática, hexadecanoato de nonila (P-12) e o esteróide ácido 24(R)-B-norergostan-3-5-diol-6-carboxílico (P-13). O potencial citotóxico e antifúngico das ceramidas foi avaliado, entretanto, estas não apresentaram atividade. Os compostos foram isolados através de cromatografia de adsorção em gel de sílica e cromatografia líquida de alta eficiência. As estruturas dos compostos obtidos foram elucidadas utilizando técnicas espectroscópicas e espectrométricas, tais como: espectrometria de massa acoplada a cromatografia gasosa (CG/EM); espectrometria de massa de alta resolução (EMAR); espectroscopia na região do infravermelho (IV) e Ressonância Magnética Nuclear (RMN 1H, 13C e 15N) através de sequências de pulsos uni e bidimensionais e comparação com dados de RMN na literatura.Pessoa, Otília Deusdênia LoiolaAlmeida, José Gustavo Lima de2016-03-22T15:49:40Z2016-03-22T15:49:40Z2011info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfALMEIDA, J. G. L. Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898). 2011. 217 f. Tese (Doutorado em Química) - Universidade Federal do Ceará, Fortaleza, 2011.http://www.repositorio.ufc.br/handle/riufc/15677porreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2019-08-23T22:21:22Zoai:repositorio.ufc.br:riufc/15677Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:23:44.668537Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
Chemical Constituents of the zoanthids Palythoa caribaeorum (Duchassaing & Michelotti, 1860) and Protopalythoa variabilis (Duerden, 1898)
title Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
spellingShingle Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
Almeida, José Gustavo Lima de
Palythoa caribaeorum
Protopalythoa variabilis
title_short Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
title_full Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
title_fullStr Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
title_full_unstemmed Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
title_sort Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898)
author Almeida, José Gustavo Lima de
author_facet Almeida, José Gustavo Lima de
author_role author
dc.contributor.none.fl_str_mv Pessoa, Otília Deusdênia Loiola
dc.contributor.author.fl_str_mv Almeida, José Gustavo Lima de
dc.subject.por.fl_str_mv Palythoa caribaeorum
Protopalythoa variabilis
topic Palythoa caribaeorum
Protopalythoa variabilis
description This work describes the chemical composition of the marine species Palythoa caribaeorum and Protopalythoa variabilis, both collected at Paracuru beach, state of Ceará. The cromatographic fractionation of the hexane extract from P. caribaeorum resulted in the isolation of four tetracyclic sterols possessing the ergostan skeleton: 24(R)-ergost-5-en-3b-ol (P-1); 5 a,8a-epidioxy-24(R)-ergost-6-en-3b-ol (P-2); 24(R)- ergost-5-en-3b,7a-diol (P-4) and 24(R)-7a-hydroperoxy-ergost-5-en-3b-ol (P-7), a glycerol derivative, 1-O-hexadecylglycerol (P-3) and four ceramides: N- (2S,3R,4E,8E,1,3-dihydroxy-4,8-octadecadienyl)hexadecanamide (P-5); N- (2S,3R,4E,1,3-dihydroxy-4-octadecenyl)hexadecanamide (P-6); N-[2S,3R,4E,8E,1-(2”- methylamino-ethanosulfonyl)-3-hydroxy-4,8-octadecaenyl]hexadecanamide (P-8) and N-[2S,3R,4E,1-(2”-methylaminoethano-sulfonyl)-3-hydroxy-4-octadecenyl]hexadecanamide (P-9). The cromatographic fractionation of the ethanol extract permited the isolation of a steroid, 24(R)-ergost-7-en-3b,5a,6b-triol (P-10) and a nucleoside 2- methyltimidine (P-11). Column chromatography of the hexane extract of P. variabilis led to the isolation of nonyl hexadecanoate (P-12), the sterol 24(R)-B-norergostan-3b- 5b-diol-6b-carboxylic acid (P-13) and the same chemical constituents previously isolated from P. caribaeorum (P-1, P-2, P-3 e P-4) including the four ceramides (P-5, P-6, P-8 e P-9). The citotoxic and antifungal properties of all ceramides were evaluated, nevertheless none of them showed any activity. All compounds were isolated through adsorption column cromatography over silica gel followed by high performance liquid chromatography. The structures of the isolated compounds were elucidated using spectrometric techniques, such as: GC/MS, HRESIMS, IR and NMR (1H, 13C and 15N) through 1D and 2D pulse sequences and, whenever the case, comparison with literature data
publishDate 2011
dc.date.none.fl_str_mv 2011
2016-03-22T15:49:40Z
2016-03-22T15:49:40Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv ALMEIDA, J. G. L. Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898). 2011. 217 f. Tese (Doutorado em Química) - Universidade Federal do Ceará, Fortaleza, 2011.
http://www.repositorio.ufc.br/handle/riufc/15677
identifier_str_mv ALMEIDA, J. G. L. Constituintes Químicos dos Zoantídeos Palythoa caribaeorum (Duchassaing & Michelotti, 1860) e Protopalythoa Variabilis (Duerden, 1898). 2011. 217 f. Tese (Doutorado em Química) - Universidade Federal do Ceará, Fortaleza, 2011.
url http://www.repositorio.ufc.br/handle/riufc/15677
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instname_str Universidade Federal do Ceará (UFC)
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reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
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repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
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