Ricardo Vessecchi

Summary

Country: Brazil

Publications

  1. ncbi 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. ncbi 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. ncbi 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. ncbi 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. ncbi request reprint Gas-phase dissociation of 1,4-naphthoquinone derivative anions by electrospray ionization tandem mass spectrometry
    Ricardo Vessecchi
    Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão, Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
    J Mass Spectrom 44:1224-33. 2009
  6. ncbi 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
  7. ncbi 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
  8. ncbi request reprint Fragmentation studies of synthetic 2-acylamino-1,4-naphthoquinones by electrospray ionization mass spectrometry
    Ricardo Vessecchi
    Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    J Mass Spectrom 41:1219-25. 2006
  9. ncbi 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
  10. ncbi request reprint A systematic investigation of the fragmentation pattern of two furanoheliangolide C-8 stereoisomers using electrospray ionization mass spectrometry
    Lucas Rossi Sartori
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos NPPNS Departamento de Física e Química, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe s n, 14040 903, Ribeirao Preto, SP, Brazil Institute of Food Chemistry, Westfalische Wilhelms Universitat Munster, Corrensstrasse 45, 48149, Munster, Germany
    Rapid Commun Mass Spectrom 28:723-30. 2014

Collaborators

  • Benedikt Cramer
  • Lucas Maciel Mauriz Marques
  • Norberto Peporine Lopes
  • Lucas Rossi Sartori
  • Antonio E M Crotti
  • Hans Ulrich Humpf
  • Anderson Rodrigo Moraes de Oliveira
  • Eduardo Afonso da Silva
  • Fernando Batista Da Costa
  • Massuo Jorge Kato
  • Dayana Rubio Gouvea
  • Mônica Tallarico Pupo
  • Erika S Bronze-Uhle
  • Norberto P Lopes
  • Paulo G B D Nascimento
  • Sérgio E Galembeck
  • Paulo M Donate

Detail Information

Publications11

  1. ncbi 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. ncbi 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. ncbi 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. ncbi 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. ncbi request reprint Gas-phase dissociation of 1,4-naphthoquinone derivative anions by electrospray ionization tandem mass spectrometry
    Ricardo Vessecchi
    Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão, Preto, Universidade de São Paulo, Ribeirão 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...
  6. ncbi 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...
  7. ncbi 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...
  8. ncbi request reprint Fragmentation studies of synthetic 2-acylamino-1,4-naphthoquinones by electrospray ionization mass spectrometry
    Ricardo Vessecchi
    Departamento de Fisica e Quimica, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Brasil
    J Mass Spectrom 41:1219-25. 2006
    ..There is evidence that the nitrogen atom is the protonation site, based on the nucleophilic atomic indices...
  9. ncbi 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...
  10. ncbi request reprint A systematic investigation of the fragmentation pattern of two furanoheliangolide C-8 stereoisomers using electrospray ionization mass spectrometry
    Lucas Rossi Sartori
    Núcleo de Pesquisa em Produtos Naturais e Sintéticos NPPNS Departamento de Física e Química, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, Avenida do Cafe s n, 14040 903, Ribeirao Preto, SP, Brazil Institute of Food Chemistry, Westfalische Wilhelms Universitat Munster, Corrensstrasse 45, 48149, Munster, Germany
    Rapid Commun Mass Spectrom 28:723-30. 2014
    ..It is also possible to use the fragmentation pattern obtained by Collision-Induced Dissociation (CID) and Higher Energy Collision-Induced Dissociation (HCD) to distinguish between the stereoisomers budlein A and centratherin...
  11. ncbi request reprint In vitro metabolism of the alkaloid piplartine by rat liver microsomes
    Lucas Maciel Mauriz Marques
    Departamento de Física Química, Faculdade de Ciencias Farmaceuticas de Ribeirao Preto, Universidade de Sao Paulo, 14040 903 Ribeirao Preto, Sao Paulo, Brazil
    J Pharm Biomed Anal 95:113-20. 2014
    ..For the first time, the in vitro metabolism studies employing microsomes were demonstrated to be a suitable tool for data regarding enzymatic kinetics and for the metabolites formed in the PPT mammalian metabolism...