1. Laboratory of Medicinal and
Technological Chemistry, Chemistry Institute, University of Brasília (UnB), Campus Universitário
Darcy Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília-DF, Brazil
2. ThoMSon Mass Spectrometry Laboratory, University of Campinas-UNICAMP, Campinas, SP, Brazil
3. Universidade Federal da Fronteira Sul, Chapecó, SC, Brazil
4. Laboratory of Molecular Catalysis, Institute of Chemistry, UFRGS, 91501-970, Porto Alegre,
RS, Brazil