Antonio L Braga

Summary

Affiliation: Universidade Federal de Santa Maria
Country: Brazil

Publications

  1. ncbi Diphenyl diselenide decreases the prevalence of vacuous chewing movements induced by fluphenazine in rats
    Roselei 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
  2. ncbi Synthesis of new chiral aliphatic amino diselenides and their application as catalysts for the enantioselective addition of diethylzinc to aldehydes
    Antonio L Braga
    Departamento de Quimica, Universidade Federal de Santa Maria, Santa Maria, RS, 97105 900, Brazil
    Org Lett 5:2635-8. 2003
  3. ncbi Synthesis of telluroamino acid derivatives with remarkable GPx like activity
    Antonio L Braga
    Departamento de Quimica, Universidade Federal de Santa Maria, 97 105 900, Santa Maria, RS, Brazil
    Org Biomol Chem 7:43-5. 2009
  4. ncbi Acceleration of arylzinc formation and its enantioselective addition to aldehydes by microwave irradiation and aziridine-2-methanol catalysts
    Antonio L Braga
    Universidade Federal de Santa Maria, Departamento de Quimica, 97105 900, Santa Maria RS, Brazil
    J Org Chem 73:2879-82. 2008
  5. ncbi Chiral seleno-amines from indium selenolates. A straightforward synthesis of selenocysteine derivatives
    Antonio L Braga
    Departamento de Quimica, Universidade Federal de Santa Maria, Santa Maria, RS, 97105 900, Brazil
    J Org Chem 71:4305-7. 2006
  6. ncbi Efficient synthesis of chiral beta-seleno amides via ring-opening reaction of 2-oxazolines and their application in the palladium-catalyzed asymmetric allylic alkylation
    Antonio L Braga
    Departamento de Quimica, Universidade Federal de Santa Maria, RS, Brazil
    J Org Chem 70:9021-4. 2005
  7. ncbi Ephedrine-based diselenide: a promiscuous catalyst suitable to mimic the enzyme glutathione peroxidase (GPx) and to promote enantioselective C-C coupling reactions
    Letiére C Soares
    NanoBio, Dpto de Química, CCNE, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
    Org Biomol Chem 10:6595-9. 2012
  8. ncbi Modulation of diorganoyl dichalcogenides reactivity by non-bonded nitrogen interactions
    Waseem 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
  9. ncbi 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 brain
    Ige 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
  10. ncbi Synthesis of diorganyl selenides mediated by zinc in ionic liquid
    Senthil Narayanaperumal
    Departamento de Quimica, Universidade Federal de Santa Maria, 97105 900, Santa Maria, Brazil
    J Org Chem 75:3886-9. 2010

Collaborators

Detail Information

Publications13

  1. ncbi Diphenyl diselenide decreases the prevalence of vacuous chewing movements induced by fluphenazine in rats
    Roselei 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...
  2. ncbi Synthesis of new chiral aliphatic amino diselenides and their application as catalysts for the enantioselective addition of diethylzinc to aldehydes
    Antonio 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...
  3. ncbi Synthesis of telluroamino acid derivatives with remarkable GPx like activity
    Antonio 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...
  4. ncbi Acceleration of arylzinc formation and its enantioselective addition to aldehydes by microwave irradiation and aziridine-2-methanol catalysts
    Antonio 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...
  5. ncbi Chiral seleno-amines from indium selenolates. A straightforward synthesis of selenocysteine derivatives
    Antonio 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...
  6. ncbi Efficient synthesis of chiral beta-seleno amides via ring-opening reaction of 2-oxazolines and their application in the palladium-catalyzed asymmetric allylic alkylation
    Antonio 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...
  7. ncbi Ephedrine-based diselenide: a promiscuous catalyst suitable to mimic the enzyme glutathione peroxidase (GPx) and to promote enantioselective C-C coupling reactions
    Letiére 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)...
  8. ncbi Modulation of diorganoyl dichalcogenides reactivity by non-bonded nitrogen interactions
    Waseem 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
    ....
  9. ncbi 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 brain
    Ige 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
    ....
  10. ncbi Synthesis of diorganyl selenides mediated by zinc in ionic liquid
    Senthil 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...
  11. ncbi Imidazolium ionic liquids containing selenium: synthesis and antimicrobial activity
    Eduardo 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...
  12. ncbi Vinylic tellurides: from preparation to their applicability in organic synthesis
    Gilson Zeni
    , Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
    Chem Rev 106:1032-76. 2006
  13. ncbi Chiral organoselenium-transition-metal catalysts in asymmetric transformations
    Marcelo 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...