Nitrocompounds
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Gold Catalysis for Selective Hydrogenation of Aldehydes and Valorization of Bio-Based Chemical Building Blocks
Gold catalysts are best known for their selectivity in oxidation reactions, however, there is a promising future for gold in selective hydrogenations. Herein, the hydrogenation of several aldehydes and important bio-based chemical building blocks, namely 5-hydroxymethylfurfural (5-HMF), furfural and vanillin, was performed throughout the combination of Au na
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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2. Abordagem da química das fragrâncias de almíscares por estudos teóricos e espectroscópicos
Both pentadecanolide and exaltolide compounds were widely used by the perfume industry for their soft and persistent odor of musks, with high fixative power. However, once they have animal origin (customarily found in anal glands of the musk deer), their usage is controlled by high costs and, also, by environmental activist groups and by all animal lovers. A
Publicado em: 2010
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3. Aspectos mecanísticos da bioatividade e toxicidade de nitrocompostos
Nitrocompounds are bioactive molecules used as antibacterial, antiparasitic and antitumoral agents. In the past of years, these molecules have been broadly studied in several fields, such as medicinal chemistry, organic chemistry, biochemical, toxicology and electrochemistry. The nitrocompounds mode of action involves the biotransformation of the nitro group
Química Nova. Publicado em: 2009
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4. Identification studies of possible targets for azomethinic or oxadiazolinic nitrocompounds with antifungal and anti-T. cruzi activity / Estudos de identificação de possíveis alvos para nitro-compostos azometínicos ou oxadiazolínicos com atividade antifúngica e anti-T. cruzi
This study had as objective the study of Tridimensional Quantitative Structure-Activity Relationships, 3D QSAR, and the identification of potential targets for 5-nitro-heterocyclic compounds with azomethynic or oxadiazolynic structures presenting dual antifungal and anti-T. cruzi bioactivity, aiming the discovery of new compounds to be used as possible drug
Publicado em: 2009
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5. Comportamento eletroquímico de nitrofuranos em eletrodos de diamante dopado com boro-modelo para o mecanismo de ação de nitrocompostos com atividades antichagásica / Electrochemical behaviour of nitrofurans on highly boron doped diamond Electrodes-model for the action mechanism of the nitrocompounds with antichagasic activity
The electrochemical behaviour of nitrofural (NFZ) at carbon paste, glassy carbon and highly boron doped diamond (HBDD) electrodes was studied in Britton- Robinson (BR) buffer using cyclic voltammetry. The best results were obtained at HBDD electrodes, in which it was possible to stabilize the radical anion (R-NO2•‾) in predominantly aqueous mediu
Publicado em: 2007
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6. QSPR/SAR em derivados 5-nitro-heterocíclicos com atividades antichagásica. Estudo das relações entre o potencial de redução do grupo nitro e propriedades físico-químicas / QSPR/SAR in 5-nitro-heterocyclic derivatives with antichagasic activity. Study of relationships between the reduction potential of nitro group and the physicochemical properties
Alguns nitrocompostos apresentam atividade antichagásica resultante do processo de redução do grupo nitro com conseqüente formação de radical nitro ânion e de intermediários tóxicos ao parasita. A variação estrutural dos derivados 5-nitroheterocíclicos pode interferir no processo de redução destes compostos e, também, na atividade biológica.
Publicado em: 2007
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7. Hidrogenação de compostos orgânicos utilizando método eletroquímico para geração de hidrogênio in situ: hidrogenação eletrocatalítica
Electrocatalytic hydrogenation (HEC) may be compared to catalytic hydrogenation (HC). The difference between these methods is the hydrogen source: HC needs a hydrogen gas supply; HEC needs a source of protons (solvent) to be reduced at a cathode surface. HEC has presented interesting advances in the last decades due to investigation of the influence of the s
Química Nova. Publicado em: 2004-04
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8. In vitro evaluation of the activity of aromatic nitrocompounds against Trypanosoma cruzi
Fourteen compounds were evaluated for their activity against Trypanosoma cruzi blood stream forms at the concentration of 500 µg/ml. Six compounds were active and re-tested at lower concentrations.
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-01
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9. Novas pirimidinas: sÃntese e avaliaÃÃo de suas propiedades farmacolÃgicas
This work describes the synthesis of three series of compounds with pirimidinic ring and its pharmacological evaluations. First, the synthesis of compounds 4-amino-2,6-(diaryldissubistituted)- 5-carbonitrile-pyrimidines (5a-h) were achieved starting from arylamidine and bisnitriles. Second, the nitro-compounds (5k-o) have been reduced to their respective ami
Publicado em: 2003
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10. Nitrate Reductase of Rice Seedlings and Its Induction by Organic Nitro-Compounds
Nitrate simultaneously induced NADH- and NADPH-nitrate reductase activities in rice seedlings. Chloramphenicol, other organic nitro-compounds such as o-nitroaniline and 2,4-dinitrophenol and nitrite also induced nitrate reductase in rice seedlings. The nitrate- or nitrite-induced nitrate reductase could accept electrons more efficiently from NADH than NADPH.