1. Department of Chemistry “U. Schiff” University of Florence via della Lastruccia 3–13 50019 Sesto F.no (FI) Italy
2. Department of Chemistry University of Copenhagen Universitetsparken 5 DK-2100 Copenhagen Ø Denmark
3. Laboratory of Molecular Genetics of Neurometabolic Diseases Department of Neuroscience and Medical Genetics, Meyer Children's Hospital IRCCS Viale Pieraccini 24 50139 Firenze Italy
4. Department of Neurosciences Psychology Drug Research and Child Health, University of Florence Viale Pieraccini 24 50139 Firenze Italy
5. Department of Experimental and Clinical Biomedical Sciences University of Florence Viale Morgagni 50 50134 Firenze Italy