Avaliação da atividade antimicrobiana de derivados isoxazóis

• Ano de defesa: 2005
• Autor(a) principal: Piovesan, Luciana Almeida
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Santa Maria; BR; Química; UFSM; Programa de Pós-Graduação em Química
• Palavras-chave em Português: Isoxazóis; Avaliação antimicrobiana; Isoxazoles; Antimicrobial evaluation; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
• Link de acesso: http://repositorio.ufsm.br/handle/1/10395

Isoxazoles compounds have been showing a great variety of pharmacological activities. Such activities might be increased by the presence of halomethyl-substitute groups in isoxazoles. This work shows the synthesis of the series of 5-trichloromethyl-5-hydroxi-4,5- dihydroisoxazoles 2a-o, 5-carboxy-isoxazoles 3a-o e 3-aryl-5- trichloro(fluoro)methylisoxazoles, 4j, 4p-t, 5j, 5p-t compounds, and further evaluation of the antimicrobial activity, by using the broth dillution technique, considering a bank of catalogued strains, represented by Gram-positive bacteria (Staphylococcus aureus), Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa), and yeast (Candida spp and Cryptococcus neoformans). All of the tested isoxazoles have presented antimicrobial activity at the tested concentrations, and the yeast species were more vulnerable than the bacteria species, being the values of minimum inhibitory concentration between 0,019 mg/mL and 1,25 mg/mL.