Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Manancial - Repositório Digital da UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/4305 |
Resumo: | The present research describes the use of b-alcoxyvynil trihalomethyl ketones [CX3C(O)CR2CR1R, where X= Cl, F; R= OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2= H, Ph] in the regiospecific synthesis of 16 new 3(4)-alkyl(aryl) substituted 5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-1-tosylpyrazoles. These pyrazolines were obtained from the reaction of b-alcoxyvinyl trihalomethyl ketones with tosyl hydrazine (63-92%). In a following phase, aiming to develop an efficient methodology of dehydration. Two 4-methoxy-4-(4-fluorophenyl)-1,1,1-trihalo-3-buten-2-ones were submitted to the reactions with four dinucleophile: semicarbazide hydrochloride, thiosemicarbazide, methyl hydrazinocarboxylate and 2-furoic hydrazide furnishing, eigth new 1-substituted-3-(4-fluorophenyl)-5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-pyrazoles (63-98%). The dehydration reactions carried out in thionyl chloride/pyridine/benzene gave the best yields of 3-(4-fluorophenyl)-5-trihalomethyl-1H-pyrazoles (41-75%). The inhibitory activities of pyrazolinic compounds were tested using the autobiography technique for bacteria and fungis. The tosyl pyrazolinic compounds exhibit a significant activity for gram-positive bacteria and low activity to fungi. Among the tested compounds, 3-(4-fluorphenyl)-5-hydroxy-5-trifluoromethyl-4,5-dihydro-1H-1-tosylpyrazole exhibited the best inhibitory activity against Staphylococcus aureus (0,78 μg/μL). All the compounds were characterized by spectral and analytical experiments 1H s and 13C s NMR, and the purity was demostrated by elemental analyzes and CG/MS. |
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Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobianoSynthesis and structural characterization of trihalomethyl substituted pyrazolynil-tolylsulfones of antimicrobial interestQuímicaQuímica orgânicaSíntese químicaCompostos químicosMedicamentos antimicrobianosCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICAThe present research describes the use of b-alcoxyvynil trihalomethyl ketones [CX3C(O)CR2CR1R, where X= Cl, F; R= OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2= H, Ph] in the regiospecific synthesis of 16 new 3(4)-alkyl(aryl) substituted 5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-1-tosylpyrazoles. These pyrazolines were obtained from the reaction of b-alcoxyvinyl trihalomethyl ketones with tosyl hydrazine (63-92%). In a following phase, aiming to develop an efficient methodology of dehydration. Two 4-methoxy-4-(4-fluorophenyl)-1,1,1-trihalo-3-buten-2-ones were submitted to the reactions with four dinucleophile: semicarbazide hydrochloride, thiosemicarbazide, methyl hydrazinocarboxylate and 2-furoic hydrazide furnishing, eigth new 1-substituted-3-(4-fluorophenyl)-5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-pyrazoles (63-98%). The dehydration reactions carried out in thionyl chloride/pyridine/benzene gave the best yields of 3-(4-fluorophenyl)-5-trihalomethyl-1H-pyrazoles (41-75%). The inhibitory activities of pyrazolinic compounds were tested using the autobiography technique for bacteria and fungis. The tosyl pyrazolinic compounds exhibit a significant activity for gram-positive bacteria and low activity to fungi. Among the tested compounds, 3-(4-fluorphenyl)-5-hydroxy-5-trifluoromethyl-4,5-dihydro-1H-1-tosylpyrazole exhibited the best inhibitory activity against Staphylococcus aureus (0,78 μg/μL). All the compounds were characterized by spectral and analytical experiments 1H s and 13C s NMR, and the purity was demostrated by elemental analyzes and CG/MS.Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorO presente trabalho descreve a utilização de b-alcoxivinil trialometil cetonas [CX3C(O)CR2CR1R, onde X: Cl, F; R: OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2: H, Ph] na síntese regioespecífica de 16 novos 3(4)-alquil(aril)-5-trialometil-5-hidroxi-4,5-diidro-1H-1-tosilpirazois. As tosilpirazolinas foram obtidas a partir da reação das b-alcoxivinil trialometil cetonas com tosilhidrazina (63-92%). Em uma segunda etapa, visando desenvolver uma eficiente metodologia para desidratação das pirazolinas trialometil substituídas. Duas 4-metoxi-4-(4-fluorfenil)-1,1,1-trialo-3-buten-2-onas foram submetidas a reações com quatro dinucleófilos: cloridrato de semicarbazida, tiosemicarbazida, carboximetilhidrazina e 2-furanoilhidrazina, originando inicialmente 8 novos 3-(4-fluorfenil)-5-trialometil-5-hidroxi-4,5-diidro-1H-pirazóis (63-98%). As reações de desidratação realizadas em meio cloreto de tionila/piridina/benzeno produziram os melhores rendimentos para 6 novos 3-(4-fluorfenil)-5-trialometil-1H-pirazóis (41-75%). As atividades inibitórias dos compostos foram avaliadas frente bactérias e fungos, utilizando a técnica de autobiografia. Os compostos tosil pirazolínicos evidenciaram significante atividade frente a bactérias gram-positivas e pouco ativas para fungos. Dentre os compostos avaliados, o composto 3-(4-fluorfenil)-5-hidroxi-5-trifluormetil-4,5-diidro-1H-1-tosilpirazol apresentou o melhor resultado, inibindo o crescimento de Staphylococcus áureus (0,78 μg/μL). Os compostos foram caracterizados por experimentos de RMN de 1H e 13C, e sua pureza determinada via Análise Elementar e CG/MS.Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em QuímicaBonacorso, Helio Gauzehttp://lattes.cnpq.br/7275608974248322Martins, Marcos Antonio Pintohttp://lattes.cnpq.br/6457412713967642Zanatta, Nilohttp://lattes.cnpq.br/0719465062354576Ferreira, Julianohttp://lattes.cnpq.br/2694197910478313Wentz, Alexandre Pereira2017-05-102017-05-102006-02-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfapplication/pdfWENTZ, Alexandre Pereira. Synthesis and structural characterization of trihalomethyl substituted pyrazolynil-tolylsulfones of antimicrobial interest. 2006. 158 f. Tese (Doutorado em Química) - Universidade Federal de Santa Maria, Santa Maria, 2006.http://repositorio.ufsm.br/handle/1/4305porinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2023-03-03T13:28:34Zoai:repositorio.ufsm.br:1/4305Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2023-03-03T13:28:34Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano Synthesis and structural characterization of trihalomethyl substituted pyrazolynil-tolylsulfones of antimicrobial interest |
title |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano |
spellingShingle |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano Wentz, Alexandre Pereira Química Química orgânica Síntese química Compostos químicos Medicamentos antimicrobianos CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano |
title_full |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano |
title_fullStr |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano |
title_full_unstemmed |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano |
title_sort |
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano |
author |
Wentz, Alexandre Pereira |
author_facet |
Wentz, Alexandre Pereira |
author_role |
author |
dc.contributor.none.fl_str_mv |
Bonacorso, Helio Gauze http://lattes.cnpq.br/7275608974248322 Martins, Marcos Antonio Pinto http://lattes.cnpq.br/6457412713967642 Zanatta, Nilo http://lattes.cnpq.br/0719465062354576 Ferreira, Juliano http://lattes.cnpq.br/2694197910478313 |
dc.contributor.author.fl_str_mv |
Wentz, Alexandre Pereira |
dc.subject.por.fl_str_mv |
Química Química orgânica Síntese química Compostos químicos Medicamentos antimicrobianos CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
topic |
Química Química orgânica Síntese química Compostos químicos Medicamentos antimicrobianos CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
The present research describes the use of b-alcoxyvynil trihalomethyl ketones [CX3C(O)CR2CR1R, where X= Cl, F; R= OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2= H, Ph] in the regiospecific synthesis of 16 new 3(4)-alkyl(aryl) substituted 5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-1-tosylpyrazoles. These pyrazolines were obtained from the reaction of b-alcoxyvinyl trihalomethyl ketones with tosyl hydrazine (63-92%). In a following phase, aiming to develop an efficient methodology of dehydration. Two 4-methoxy-4-(4-fluorophenyl)-1,1,1-trihalo-3-buten-2-ones were submitted to the reactions with four dinucleophile: semicarbazide hydrochloride, thiosemicarbazide, methyl hydrazinocarboxylate and 2-furoic hydrazide furnishing, eigth new 1-substituted-3-(4-fluorophenyl)-5-trihalomethyl-5-hydroxy-4,5-dihydro-1H-pyrazoles (63-98%). The dehydration reactions carried out in thionyl chloride/pyridine/benzene gave the best yields of 3-(4-fluorophenyl)-5-trihalomethyl-1H-pyrazoles (41-75%). The inhibitory activities of pyrazolinic compounds were tested using the autobiography technique for bacteria and fungis. The tosyl pyrazolinic compounds exhibit a significant activity for gram-positive bacteria and low activity to fungi. Among the tested compounds, 3-(4-fluorphenyl)-5-hydroxy-5-trifluoromethyl-4,5-dihydro-1H-1-tosylpyrazole exhibited the best inhibitory activity against Staphylococcus aureus (0,78 μg/μL). All the compounds were characterized by spectral and analytical experiments 1H s and 13C s NMR, and the purity was demostrated by elemental analyzes and CG/MS. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-02-02 2017-05-10 2017-05-10 |
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 |
WENTZ, Alexandre Pereira. Synthesis and structural characterization of trihalomethyl substituted pyrazolynil-tolylsulfones of antimicrobial interest. 2006. 158 f. Tese (Doutorado em Química) - Universidade Federal de Santa Maria, Santa Maria, 2006. http://repositorio.ufsm.br/handle/1/4305 |
identifier_str_mv |
WENTZ, Alexandre Pereira. Synthesis and structural characterization of trihalomethyl substituted pyrazolynil-tolylsulfones of antimicrobial interest. 2006. 158 f. Tese (Doutorado em Química) - Universidade Federal de Santa Maria, Santa Maria, 2006. |
url |
http://repositorio.ufsm.br/handle/1/4305 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Química UFSM Programa de Pós-Graduação em Química |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria BR Química UFSM Programa de Pós-Graduação em Química |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Manancial - Repositório Digital da UFSM |
collection |
Manancial - Repositório Digital da UFSM |
repository.name.fl_str_mv |
Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
atendimento.sib@ufsm.br||tedebc@gmail.com |
_version_ |
1805922023125286912 |