Institution: | a European Research Centre for Drug Discovery and Development (NatSynDrugs), via Aldo Moro, 2-Università di Siena, 53100 Siena, Italy b Dipartimento Farmaco Chimico Tecnologico, via Aldo Moro, 2 - Università di Siena, 53100 Siena, Italy c DNA Enzymology and Molecular Virology, Institute of Molecular Genetics IGM-CNR, National Research Council, 27100 Pavia, Italy d Dipartimento di Chimica Farmaceutica e Tossicologica, Università di Napoli Federico II, via D. Montesano 49, 80131 Napoli, Italy |