1. Department
of Drug Discovery and Development, Istituto Italiano di Tecnologia, 16163 Genova, Italy
2. Department
of Pharmaceutical Chemistry, Philipps-University Marburg, Marbacher Weg
6, 35032 Marburg, Germany
3. Small
Molecule Platform/MIB, Merck KGaA, Merck Serono Research, Frankfurter
Str. 250, 64293 Darmstadt, Germany
4. Department
of Pharmacy and Biotechnology, University of Bologna, 40126 Bologna, Italy