1. Department of Chemistry; Federal University of Amazonas; Manaus- AM 69077-000 Brazil
2. Amazon Biotechnology Center; Manaus- AM 69075-351 Brazil
3. NMR Center; Federal Universisty of Paraná; Curitiba- PR 81531-990 Brazil
4. DeMpSter Mass Spectrometry Group; Amazonas State University; Manaus- AM 69050-010 Brazil