Ricardo Vessecchi

Summary

Country: Brazil

Publications

  1. doi request reprint Electronic structure and gas-phase chemistry of protonated α- and β-quinonoid compounds: a mass spectrometry and computational study
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    Rapid Commun Mass Spectrom 27:816-24. 2013
  2. doi request reprint Gas-phase reactivity of protonated 2-oxazoline derivatives: mass spectrometry and computational studies
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Ribeirao Preto, SP, Brasil
    Rapid Commun Mass Spectrom 26:1061-9. 2012
  3. doi request reprint Generation of naphthoquinone radical anions by electrospray ionization: solution, gas-phase, and computational chemistry studies
    Ricardo Vessecchi
    Departamento de Química, Faculdade de Filosofia Ciências e Letras, Universidade de São Paulo, Ribeirão Preto, SP 14040 901, Brasil
    J Phys Chem A 115:5453-60. 2011
  4. doi request reprint Gas-phase reactivity of 2-hydroxy-1,4-naphthoquinones: a computational and mass spectrometry study of lapachol congeners
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    J Mass Spectrom 47:1648-59. 2012
  5. doi request reprint Fragmentation studies and electrospray ionization mass spectrometry of lapachol: protonated, deprotonated and cationized species
    Ricardo Vessecchi
    Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    Rapid Commun Mass Spectrom 24:2101-8. 2010
  6. doi request reprint Gas-phase dissociation of 1,4-naphthoquinone derivative anions by electrospray ionization tandem mass spectrometry
    Ricardo Vessecchi
    Departamento de Quimica, Faculdade de Filosofia Ciências e Letras de Ribeirão, Preto, Universidade de Sao Paulo, Ribeirao Preto, SP, Brazil
    J Mass Spectrom 44:1224-33. 2009
  7. doi request reprint Gas-phase fragmentation of gamma-lactone derivatives by electrospray ionization tandem mass spectrometry
    Antonio E M Crotti
    Departamento de Quimica, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto USP, Ribeirao Preto, SP, Brazil
    J Mass Spectrom 44:1733-41. 2009
  8. doi request reprint Re-examination of the anion derivatives of isoflavones by radical fragmentation in negative electrospray ionization tandem mass spectrometry: experimental and computational studies
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe s n, 14040 903 Ribeirão Preto SP, Brasil
    Rapid Commun Mass Spectrom 25:2020-6. 2011

Collaborators

  • Benedikt Cramer
  • Antonio E M Crotti
  • Sérgio E Galembeck
  • Paulo G B D Nascimento
  • Paulo M Donate
  • Erika S Bronze-Uhle
  • Norberto P Lopes

Detail Information

Publications8

  1. doi request reprint Electronic structure and gas-phase chemistry of protonated α- and β-quinonoid compounds: a mass spectrometry and computational study
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    Rapid Commun Mass Spectrom 27:816-24. 2013
    ....
  2. doi request reprint Gas-phase reactivity of protonated 2-oxazoline derivatives: mass spectrometry and computational studies
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Ribeirao Preto, SP, Brasil
    Rapid Commun Mass Spectrom 26:1061-9. 2012
    ....
  3. doi request reprint Generation of naphthoquinone radical anions by electrospray ionization: solution, gas-phase, and computational chemistry studies
    Ricardo Vessecchi
    Departamento de Química, Faculdade de Filosofia Ciências e Letras, Universidade de São Paulo, Ribeirão Preto, SP 14040 901, Brasil
    J Phys Chem A 115:5453-60. 2011
    ..These results are important for understanding the formation and reactivity of radical anions and to establish their correlation with the reducing properties by electrospray ionization analyses...
  4. doi request reprint Gas-phase reactivity of 2-hydroxy-1,4-naphthoquinones: a computational and mass spectrometry study of lapachol congeners
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    J Mass Spectrom 47:1648-59. 2012
    ..The side chain at position C(3) was found to play important roles in the fragmentation mechanisms of these compounds...
  5. doi request reprint Fragmentation studies and electrospray ionization mass spectrometry of lapachol: protonated, deprotonated and cationized species
    Ricardo Vessecchi
    Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    Rapid Commun Mass Spectrom 24:2101-8. 2010
    ..Potential energy surfaces for fragmentation reactions were obtained by the B3LYP/6-31+G(d,p) model...
  6. doi request reprint Gas-phase dissociation of 1,4-naphthoquinone derivative anions by electrospray ionization tandem mass spectrometry
    Ricardo Vessecchi
    Departamento de Quimica, Faculdade de Filosofia Ciências e Letras de Ribeirão, Preto, Universidade de Sao Paulo, Ribeirao Preto, SP, Brazil
    J Mass Spectrom 44:1224-33. 2009
    ..Possible pathways have been suggested, and their mechanisms have been elucidated on the basis of Gibbs energy and enthalpy values for the anions previously described at each pathway...
  7. doi request reprint Gas-phase fragmentation of gamma-lactone derivatives by electrospray ionization tandem mass spectrometry
    Antonio E M Crotti
    Departamento de Quimica, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto USP, Ribeirao Preto, SP, Brazil
    J Mass Spectrom 44:1733-41. 2009
    ..The energetic aspects involved in the protonation and gas-phase fragmentation processes were interpreted on the basis of thermochemical data obtained by computational quantum chemistry...
  8. doi request reprint Re-examination of the anion derivatives of isoflavones by radical fragmentation in negative electrospray ionization tandem mass spectrometry: experimental and computational studies
    Ricardo Vessecchi
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe s n, 14040 903 Ribeirão Preto SP, Brasil
    Rapid Commun Mass Spectrom 25:2020-6. 2011
    ..Finally, energy-resolved experiments were carried out to give more details about the gas-phase dissociation reaction of the isoflavones and the results are in agreement with the theoretical approaches...