Research Topics
| Antonio L BragaSummaryAffiliation: Universidade Federal de Santa Maria Country: Brazil Publications
| Collaborators
|
Detail Information
Publications
Diphenyl diselenide decreases the prevalence of vacuous chewing movements induced by fluphenazine in ratsRoselei Fachinetto
Departamento de Quimica, Programa de Pos Graduacao em Bioquimica Toxicologica, Universidade Federal de Santa Maria, 97105 900, Santa Maria, RS, Brazil
Psychopharmacology (Berl) 194:423-32. 2007..Chronic treatment with neuroleptics causes, as a side effect, tardive dyskinesia in humans; however, the mechanisms involved in its pathophysiology remain unclear...
Synthesis of new chiral aliphatic amino diselenides and their application as catalysts for the enantioselective addition of diethylzinc to aldehydesAntonio L Braga
Departamento de Quimica, Universidade Federal de Santa Maria, Santa Maria, RS, 97105 900, Brazil
Org Lett 5:2635-8. 2003..The influence of the alkyl group substituents on the stereoselectivity has been studied, and in the best case, an enantiomeric excess up to 99% could be obtained by using only 0.5 mol % of the chiral diselenide 3a...
Synthesis of telluroamino acid derivatives with remarkable GPx like activityAntonio L Braga
Departamento de Quimica, Universidade Federal de Santa Maria, 97 105 900, Santa Maria, RS, Brazil
Org Biomol Chem 7:43-5. 2009..A series of modular telluroamino acid derivatives with remarkable GPx-like behavior was prepared in an efficient and short two-step synthesis...
Acceleration of arylzinc formation and its enantioselective addition to aldehydes by microwave irradiation and aziridine-2-methanol catalystsAntonio L Braga
Universidade Federal de Santa Maria, Departamento de Quimica, 97105 900, Santa Maria RS, Brazil
J Org Chem 73:2879-82. 2008..Of the amino acid derived catalysts tested, the conformationally restricted bulky substituted aziridine-2-methanols derived from serine show the best overall performance in the formation of diarylmethanols...
Chiral seleno-amines from indium selenolates. A straightforward synthesis of selenocysteine derivativesAntonio L Braga
Departamento de Quimica, Universidade Federal de Santa Maria, Santa Maria, RS, 97105 900, Brazil
J Org Chem 71:4305-7. 2006..As an application, the synthesis of selenocysteine and selenotreonine derivatives has been accomplished...
Efficient synthesis of chiral beta-seleno amides via ring-opening reaction of 2-oxazolines and their application in the palladium-catalyzed asymmetric allylic alkylationAntonio L Braga
Departamento de Quimica, Universidade Federal de Santa Maria, RS, Brazil
J Org Chem 70:9021-4. 2005..Additionally, these new compounds were evaluated in the palladium-catalyzed asymmetric allylic alkylation, giving the alkylated products in up to 98% ee...
Ephedrine-based diselenide: a promiscuous catalyst suitable to mimic the enzyme glutathione peroxidase (GPx) and to promote enantioselective C-C coupling reactionsLetiére C Soares
NanoBio, Dpto de Química, CCNE, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
Org Biomol Chem 10:6595-9. 2012..33 min (eleven times faster than PhSeSePh)...
Modulation of diorganoyl dichalcogenides reactivity by non-bonded nitrogen interactionsWaseem Hassan
Departamento de Quimica, Centro de Ciencias Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria CEP 97105 900, RS, Brazil
Chem Biol Interact 199:96-105. 2012....
Comparative studies on dicholesteroyl diselenide and diphenyl diselenide as antioxidant agents and their effect on the activities of Na+/K+ ATPase and delta-aminolevulinic acid dehydratase in the rat brainIge J Kade
Departamento de Quimica, Centro Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
Neurochem Res 33:167-78. 2008....
Synthesis of diorganyl selenides mediated by zinc in ionic liquidSenthil Narayanaperumal
Departamento de Quimica, Universidade Federal de Santa Maria, 97105 900, Santa Maria, Brazil
J Org Chem 75:3886-9. 2010..Compared to the usual organic solvents, BMIM-BF(4) exhibited higher performance with the advantage to be reused up to five successive runs...
Imidazolium ionic liquids containing selenium: synthesis and antimicrobial activityEduardo E Alberto
Departamento de Quimica, Universidade Federal de Santa Maria, Santa Maria, Brazil
Org Biomol Chem 9:1001-3. 2011..Minimum inhibitory concentration revealed that these compounds are especially active against algae, and their activity is modulated by substituents attached to the selenium moiety as well as by the counterion...
Vinylic tellurides: from preparation to their applicability in organic synthesisGilson Zeni
, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
Chem Rev 106:1032-76. 2006
Chiral organoselenium-transition-metal catalysts in asymmetric transformationsMarcelo Godoi
Departamento de Quimica, Universidade Federal de Santa Catarina, Florianopolis, SC 88040 970, Brazil
Dalton Trans 40:11347-55. 2011..Important selective contributions within the field of chiral selenium complexes are examined, according to their applications. As final remarks, future developments and perspectives of the field are discussed...
