1. Department of Chemical and Pharmaceutical Sciences, University of Trieste, P.le Europa 1, 34127 Trieste, Italy
2. Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Giorgieri 1, 34127 Trieste, Italy
3. Department of Chemistry and Technology of Biologically Active Substances, University “La Sapienza”, P.le Aldo Moro 5, 00185 Rome, Italy
4. Rottapharm—Madaus SpA, Via Valosa di Sopra 7, 20052 Monza, Italy
5. Université de Toulouse 3, EA 4552, I2MC, 1 Avenue Jean Poulhès, 31432 Toulouse, France