1. UCIBIO/REQUIMTE
2. Department of Chemistry and Biochemistry
3. Faculty of Sciences
4. University of Porto
5. 4169-007 Porto
6. LAQV/REQUIMTE
7. Department of Organic Chemistry
8. Faculty of Pharmacy
9. University of Santiago de Compostela
10. E-15782 Santiago de Compostela
11. Spain
12. Instituto de Química
13. Universidade Federal da Bahia
14. Salvador-BA
15. 40170-290 Brazil