1. Department of Chemistry and Industrial Chemistry, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
2. Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum - University of Bologna, Via Selmi, 2, 40126 Bologna, Italy
3. Chemistry Research and Drug Design, Chiesi Farmaceutici S.p.A., Centro Ricerche, Largo Belloli 11/A, 43122 Parma, Italy