1. CIDETEC Nanomedicine, Parque Cientı́fico y Tecnológico de Guipúzcoa, P° Miramón, 196, 20014 Donostia-San Sebastián, Spain
2. Department
of Chemistry, University of Florence, via della Lastruccia, 13, I-50019 Sesto F.no (FI), Italy
3. Instituto Finlay de Vacunas, Avenida
No. 21, 19810, Havana, Cuba
4. Department
of Bio-Organic Synthesis, Leiden Institute of Chemistry, Leiden University, Leiden, 2333 CC, The Netherlands
5. Department
of Parasiolgy, Leiden University Medical Center, Leiden, 2333 ZA, The Netherlands