Ceccarelli, Simona M.; Jaeschke, Georg; Buettelmann, Bernd; Huwyler, Joerg; Kolczewski, Sabine; Peters, Jens-Uwe; Prinssen, Eric; Porter, Richard; Spooren, Will; Vieira, Eric Bioorganic and Medicinal Chemistry Letters, 2007 , vol. 17, # 5 p. 1302 - 1306