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Itens para a visualização no momento 11-20 of 45
Estudo da interação do alumínio com o ácido glucônico
(Universidade Federal de Santa Maria, 2005-08-19)
Parenteral solutions are used for patients with complexes diseases, for pre-term infants and surgical patients. The administration of solutions contaminated by aluminium for a long period of time can lead to severe ...
Uso de microondas na síntese de 3-alquil(aril)-5-hidróxi-5-triclorometil-4,5-diidro-1h-pirazol-1-carboxiamida
(Universidade Federal de Santa Maria, 2005-03-01)
A series of 3-alkyl and 3-aryl-5-hydroxy-5-trichloromethyl-4,5-dihydro-1Hpirazoles-1-carboxiamide that possess biological activity they were synthesized, in good yeld, through the cyclocondensation, in microwaves, of ...
Avaliação da atividade antimicrobiana de derivados isoxazóis
(Universidade Federal de Santa Maria, 2005-03-03)
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 ...
Síntese, reatividade e atividade antimicrobiana de β-enamino ésteres α-clorados utilizando K-10 e irradiação de microondas
(Universidade Federal de Santa Maria, 2005-12-15)
Enamino carbonylic compounds are important synthetic intermediates used in the synthesis of heterocycles and natural products. Our group of research has been dedicating much of our efforts to the development and implementation ...
Uso de modelos multivariados para a avaliação do valor de dienos em amostras de gasolina de pirólise
(Universidade Federal de Santa Maria, 2005-12-19)
The quality of gasoline may be affected by the presence of several compounds. Among them, the conjugated dienes play an important role due to the fact that their presence is strongly associated with gum formation, which ...
Determinação de cloridrato de propranolol em medicamentos por espectroscopia no infravermelho com calibração multivariada (PLS)
(Universidade Federal de Santa Maria, 2005-07-21)
In this work calibration multivariate models were developed with the use of the technique of partial least scores (PLS) for the dosage of tablets of propranolol hydrochloride using infrared spectroscopy. Samples were ground ...
Síntese e cristaloquímica de complexos de mercúrio(ii) com o ligante 1-(3-trifluorometilfenil)-3-(3-nitrofenil)triazeno
(Universidade Federal de Santa Maria, 2005-08-01)
This work shows the crystaline/molecular structure of two mercury(II) complexes with a same monocateneted triazene ligand previolsly deprotonated. The reaction between mercury(II) acetate, 1-(3-nitrophenyl)-3-(3-trifluor ...
Estudo fitoquímico e da atividade biológica de Zanthoxylum rhoifolium
(Universidade Federal de Santa Maria, 2005-08-12)
Four previously known dihydrobenzophenanthridine alkaloids,
Dihydrochelerythrine (39), Bocconoline (42), Chelerythrine (2) and 6- Acetonyldihydrochelerythrine (33), were isolated from the stem bark of Zanthoxylum rhoifolium, ...
Uso de K-10 e irradiação de microondas no estudo da metodologia de transesterificação e na síntese de β-enamino ésteres
(Universidade Federal de Santa Maria, 2005-05-20)
Due to the high chemical versatility of β-keto esters and the β-enamino carbonylic compounds as synthetic precursors, our research group has investigated and developed methodologies for their synthesis and reactivity. In ...
Reação de alquinos terminais com 1,1,1-trialo-4-alcóxi-3- alquen-2-onas
(Universidade Federal de Santa Maria, 2005-02-21)
In this work a convenient method of synthesis of 9 eninones is presented, through the reaction of different acetylenes (phenylacetylene, 1-heptyne and 1-hexyne) with n-butillithium and subsequently with electrophiles ...