Dessole, Gabriella; Branca, Danila; Ferrigno, Federica; Kinzel, Olaf; Muraglia, Ester; Palumbi, Maria Cecilia; Rowley, Michael; Serafini, Sergio; Steinkuehler, Christian; Jones, Philip Bioorganic and Medicinal Chemistry Letters, 2009 , vol. 19, # 15 p. 4191 - 4195