Carbonylation
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Recent Developments on Palladium-Catalyzed Carbonylation Reactions in Renewable Solvents
Palladium-catalyzed carbonylation reaction has surfaced as a robust tool for insertion of the carbonyl group into organic molecules, and in the last decades enormous progress has been made. Nowadays, a plethora of methodologies is available to synthesize all kinds of carbonyl compounds. However, the focus has shifted during recent years to address rising con
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Effects of aquatic exercise on mental health, functional autonomy and oxidative stress in depressed elderly individuals: A randomized clinical trial
OBJECTIVES: The aim of this study was to investigate the effects of aquatic exercise on mental health, functional autonomy and oxidative stress parameters in depressed elderly individuals. METHODS: Initially, ninety-two elderly individuals were included in the study and were allocated into the depression group (n=16) and nondepression group (n=14). Both gr
Clinics. Publicado em: 27/06/2019
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3. Evaluation of the antioxidant potential of Copaifera multijuga in Ehrlich tumor-bearing mice
RESUMO Copaifera multijuga, ou copaíba, é utilizada popularmente como chá para o tratamento de diversas afecções, o que se deve à presença de substâncias antioxidantes em sua composição, que protegem as células contra danos causados pelos radicais livres. O óleo-resina da árvore é usado como antiinflamatório e antitumoral. O presente estudo av
Acta Amaz.. Publicado em: 2019-03
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4. A NEW HOMOGENEOUS ELECTROCATALYST FOR ELECTROCHEMICAL CARBONYLATION OF METHANOL TO DIMETHYL CARBONATE
Electrosynthesis of dimethyl carbonate (DMC) from methanol and carbon monoxide using an Cu(phen)Cl2 catalyst was achieved at room temperature and atmospheric pressure. The catalytic activity of the ligand 1,10-phenanthroline (phen) and the catalytic system were analyzed. The IR characterization results for the complex catalyst showed that copper ions were co
Quím. Nova. Publicado em: 2015-03
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5. EFEITO in vitro DE Paullinia cupana NO METABOLISMO OXIDATIVO DE ESPERMATOZÓIDES HUMANOS EXPOSTOS AO CLORETO DE METILMERCÚRIO / EFFECT OF Paullinia cupana in vitro oxidative metabolism HUMAN SPERM EXPOSED TO CHLORIDE METHYLMERCURY
Investigations suggests that methylmercury (MeHg) toxicitiy is related to oxidative stress promotion caused by lipid peroxidation of cell membranes as well as genotoxicity. The methylmercury (MeHg) exposition causes production of adverse effects as deterioration of semen quality, testicular degeneration, and male reproductive failure. Since human sperm is a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2012
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6. Influência da variabilidade genética sobre biomarcadores de dano oxidativo e não oxidativo em pacientes com doença pulmonar obstrutiva crônica (DPOC)
Chronic Obstructive Pulmonary Disease (COPD) is a slowly progressive condition of poor reversibility that is characterized by airflow limitation associated with an abnormal inflammatory response of the lungs. Its development and progression are related to increased oxidative stress, which is an important pathogenic component of airway inflammation in this di
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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7. Antioxidant effects of crude extracts from Baccharis species: inhibition of myeloperoxidase activity, protection against lipid peroxidation, and action as oxidative species scavenger
The objective of this study was to show a comparison of the antioxidant properties of aqueous and ethanolic extracts obtained from Baccharis articulata (Lam.) Pers., Baccharis trimera (Less.) DC., Baccharis spicata (Lam.) Baill. and Baccharis usterii Heering, Asteraceae, by several techniques covering a range of oxidant species and of biotargets. We have inv
Revista Brasileira de Farmacognosia. Publicado em: 20/05/2011
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8. Adaptação oxidativa e funcional progressiva do sistema cardiopulmonar secundária à hipertensão arterial pulmonar em ratos
Pulmonary Arterial Hypertension (PAH) is a disease that affects the pulmonary vessels, essentially pre-capillaries, leading to remodeling of the vascular wall. It is characterized hemodynamic syndrome, which is the increase in pulmonary vascular resistance and right ventricular afterload. A growing body of evidence shows the involvement of oxidative stress i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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9. Effect of (-)-∆9-tetrahydrocannabinoid on the hepatic redox state of mice
(-)-∆9-Tetrahydrocannabinol (∆9-THC), a psychoactive component of marijuana, has been reported to induce oxidative damage in vivo and in vitro. In this study, we administered ∆9-THC to healthy C57BL/6J mice aged 15 weeks in order to determine its effect on hepatic redox state. Mice were divided into 3 groups: ∆9-THC (N = 10), treated with 10 mg/kg bo
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-04
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10. Transition-metal catalyzed synthesis of ketoprofen
Reações catalisadas por complexos de metais de transição tais como carbonilação, hidrovinilação e hidrogenação foram empregadas na síntese do ácido -(3-benzoilfenil)propanóico (Cetoprofeno). Acoplamento do tipo Heck entre 3-bromobenzofenona e etileno conduziu à 3-vinilbenzofenona que na seqüência, por carbonilação catalisada por paládio
Publicado em: 2010
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11. The role of Na+,K+-ATPase enzyme on cognitive deficit and in the prophylactic effect induced by exercise after Traumatic Brain Injury / O papel da enzima Na+,K+-ATPase no déficit cognitivo e no efeito profilático induzido pelo exercício físico após o Traumatismo Crânio-Encefálico
O Traumatismo crânio-encefálico (TCE) é uma das maiores causas de morte ou déficits cognitivos nos países industrializados. Apesar de os estudos indicarem que o estresse oxidativo e os déficits funcionais que ocorrem após TCE serem eventos interrelacionados, os mecanismos que delineiam o desenvolvimento destes déficits cognitivos são, ainda, limitad
Publicado em: 2009
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12. Efeitos da suplementação de taurina sobre os parâmetros de estresse oxidativo muscular induzidos por exercício excêntrico / Efeitos da suplementação de taurina sobre os parâmetros de estresse oxidativo muscular induzidos por exercício excêntrico / Taurine supplementation effects on muscle oxidative stress induced by eccentric exercise / Taurine supplementation effects on muscle oxidative stress induced by eccentric exercise
This study was to investigate the effects of taurine supplementation on biomarkers of oxidative stress after eccentric exercise. Twenty four male rats Wistar were divided into the following groups (n=6): control (C); eccentric exercise (EE); eccentric exercise plus taurine (EET); eccentric exercise plus saline (EES). Taurine was administered with solution of
Publicado em: 2009