1. Department of Chemistry “Ugo Schiff” University of Florence Via della Lastruccia 13 50019 Sesto Fiorentino (FI) Italy
2. Department of Chemistry University of Copenhagen Universitetsparken 5 2100 Copenhagen Denmark
3. Paediatric Neurology Unit and Laboratories, Neuroscience Department Meyer Children's Hospital, and Department of Neurosciences Pharmacology and Child Health University of Florence Viale Pieraccini 24 50139 Firenze Italy