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Itens para a visualização no momento 11-20 of 22
Síntese e avaliação biológica de calcogeno-oxadiazóis e calcogenotetrazóis
(Universidade Federal de Santa Maria, 2017-02-24)
This work first describes the synthesis of the starting materials, the 1,2,4- and 1,3,4-oxadiazoles, from arylamidoximes and arylhydrazides derivatives, respectively. These two precursors were previously reacted with the ...
Novos corantes moleculares derivados de sulfetos vinílicos: síntese e propriedades fotofísicas
(Universidade Federal de Santa Maria, 2017)
This thesis describes, initially, the synthesis and photophysical characterization
of new sulfides,sulphoxides and vinyl sulfones based dyes. The compounds in question
were obtained in good yields and good diastereoselectivity ...
Síntese e avaliação farmacológica de 7-amino-espiro[cromeno[4,3-b]quinolina-6,1’-cicloalcanos] e derivados
(Universidade Federal de Santa Maria, 2017)
The present thesis describes the synthesis and pharmacological evaluation of new tacrine structural analogues, as well as N-derivation reactions and C-C and C-N coupling on these compounds. By this way, a series of ...
Avaliação da técnica de extração sortiva em disco rotatório (RDSE) para determinação multirresíduo de agrotóxicos em água por UHPLC-MS/MS
(Universidade Federal de Santa Maria, 2017-02-24)
The use of pesticides in agriculture and urban areas has always been associated with advantages and disadvantages. As benefits, the increase of the productivity of crops and the control of vectors that cause diseases can ...
Síntese e funcionalização de azóis via formação de ligações carbono – carbono e carbono – nitrogênio
(Universidade Federal de Santa Maria, 2017-02-24)
This work describes the synthesis and functionalization of azoles employing different methodologies, based on organometallic catalysis or not. Firstly, we disclose the synthesis tetra-substituted 5-trifluoromethyl pyrazoles ...
Química supramolecular: uma jornada através da cristalização de 1,3,5-tris(pirazolil)benzenos e aminoisoxazóis e gelificação de n-fenilestearamidas
(Universidade Federal de Santa Maria, 2017-03-28)
This work presents the study of intermolecular interactions involved in the formation of molecular crystals and supramolecular gels. The compounds 3-amino-4-halo-5-methylisoxazoles and 1,3,5-Tris(pirazolyl)benzenes were ...
Caracterização química de extratos de plantas medicinais por LC-MS/MS e resposta in vivo da atividade anticonvulsivante da Jatropha gossypiifolia L.
(Universidade Federal de Santa Maria, 2017-08-17)
In this paper, two methods using LC-MS/MS were developed for the chemical
characterization of Amazonian medicinal plants and evaluated the anticonvulsive response in
vivo. An analytical method using LC-APPI-MS/MS with ...
Síntese, análise estrutural e aplicações de complexos de metais de transição como agentes antioxidantes.
(Universidade Federal de Santa Maria, 2017-08-31)
In this study, fifteen complexes were synthesized from the ligands derived from the condensation of 8-hydroxy-2-quinolinecarboxaldehyde with the primary amines: 2-aminoethanol (ethanolamine), 2-amino-1,3-propanediol (serinol) ...
Resíduos de agrotóxicos em ameixa, maçã, pera e pêssego: desenvolvimento de métodos de análise e monitoramento
(Universidade Federal de Santa Maria, 2017-02-06)
In recent years, the indiscriminate use of pesticides and a lack of adoption of good
agricultural practices have been evidenced by the results of analyzes of residues of
pesticides in food. Thus, the goal of this work ...
Determinação de elementos terras raras em petróleo e frações por amostragem direta e ICP-MS com vaporização eletrotérmica
(Universidade Federal de Santa Maria, 2017-07-29)
In this work, a method for the determination of rare earth elements (REE) present in low concentrations in crude oil, atmospheric distillation residue (RAT) and vacuum distillation residue (VR) using direct sampling and ...