1. Institute
for the Organic Synthesis and Photoreactivity, Italian National Research Council, Via Gobetti 101, 40129 Bologna, Italy
2. I.R.S.T., Istituto Scientifico Romagnolo per lo Studio e la cura dei Tumori, Via P. Maroncelli, 40, 47014 Meldola, Forlì, Italy
3. Department
of Biochemistry, Biophysics and General Pathology, II University of Naples, Via L. De Crecchio, 7, 80138 Naples, Italy
4. Experimental
Chemotherapy Laboratory, Regina Elena National Cancer Institute, Via
delle Messi d’Oro, 156, 00158 Rome, Italy
5. Fondazione IRCCS Istituto Nazionale dei Tumori Milano, Via Amadeo, 42, 20133 Milano, Italy