1. University of Coimbra, CQC and Department of Chemistry, 3004-535 Coimbra, Portugal
2. LAQV-REQUIMTE, Rua Romão Ramalho, 59, University of Évora, 7000 Évora, Portugal
3. Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, E-41071 Seville, Spain
4. Institute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitaetsstrasse 1, 40225 Duesseldorf, NRW, Germany
5. University of Evora, Department of Chemistry, Rua Romão Ramalho, 59, 7000 Évora, Portugal