Antonio L Braga

Summary

Affiliation: Universidade Federal de Santa Maria
Country: Brazil

Publications

  1. ncbi request reprint 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 request reprint 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. doi request reprint 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. doi request reprint 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 request reprint 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 request reprint 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 request reprint Effects of age on reserpine-induced orofacial dyskinesia and possible protection of diphenyl diselenide
    Marilise Burger
    Departamento de Fisiologia, CCS, Curso de Mestrado Doutorado em Ciências Biológicas Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105 900 Santa Maria, RS, Brazil
    Brain Res Bull 64:339-45. 2004
  8. ncbi request reprint Diethyl 2-phenyl-2 tellurophenyl vinylphosphonate: an organotellurium compound with low toxicity
    Daiana Silva de Avila
    Departamento de Quimica, Centro de Ciencias Naturais e Exatas, Universidade Federal de Santa Maria, CEP 97105 900 Santa Maria, RS, Brazil
    Toxicology 224:100-7. 2006
  9. doi request reprint 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
  10. doi request reprint 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

Collaborators

Detail Information

Publications16

  1. ncbi request reprint 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 request reprint 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. doi request reprint 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. doi request reprint 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 request reprint 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 request reprint 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 request reprint Effects of age on reserpine-induced orofacial dyskinesia and possible protection of diphenyl diselenide
    Marilise Burger
    Departamento de Fisiologia, CCS, Curso de Mestrado Doutorado em Ciências Biológicas Bioquímica Toxicológica, Universidade Federal de Santa Maria, 97105 900 Santa Maria, RS, Brazil
    Brain Res Bull 64:339-45. 2004
    ..However, additional studies are still necessary to establish whether this compound can be considered an effective antioxidant in other models of neurotoxicity...
  8. ncbi request reprint Diethyl 2-phenyl-2 tellurophenyl vinylphosphonate: an organotellurium compound with low toxicity
    Daiana Silva de Avila
    Departamento de Quimica, Centro de Ciencias Naturais e Exatas, Universidade Federal de Santa Maria, CEP 97105 900 Santa Maria, RS, Brazil
    Toxicology 224:100-7. 2006
    ..Since diethyl 2-phenyl-2 tellurophenyl vinylphosphonate had low toxicity to mice after sub-chronic exposure, it becomes important to investigate its possible pharmacological properties...
  9. doi request reprint 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)...
  10. doi request reprint 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
    ....
  11. ncbi request reprint 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
    ....
  12. doi request reprint 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...
  13. doi request reprint 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...
  14. ncbi request reprint Vinylic tellurides: from preparation to their applicability in organic synthesis
    Gilson Zeni
    Departamento de Quimica, Universidade Federal de Santa Maria, 97105 900 Santa Maria, RS, Brazil
    Chem Rev 106:1032-76. 2006
  15. doi request reprint Straightforward synthesis of non-natural l-chalcogen and l-diselenide N-Boc-protected-γ-amino acid derivatives
    Cristiane Y Kawasoko
    Departamento de Química, Universidade Federal de Santa Maria, 97105 900, Santa Maria, RS, Brazil
    Org Biomol Chem 11:5173-83. 2013
    ..Also, an l-diselenide-N-Boc-γ-amino acid was prepared in good yield. This new synthetic route represents an efficient method for preparing new l-chalcogen- and l-diselenide-γ-amino acids with biological potential. ..
  16. ncbi request reprint 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...