1. Department of Chemical Sciences, University of Naples “Federico II”, Via Cintia, 80126 Naples, Italy, http://chemicalsciences.unina.it/documents/research‐groups
2. IBB, CNR, Via Mezzocannone 16, 80134 Naples, Italy
3. Department of Structural and Functional Biology, University of Naples “Federico II”, Via Cintia, 80126 Naples, Italy
4. Department of Pharmaceutical Chemistry, School of Pharmacy, University of California, San Francisco San Francisco, CA 94158, USA