Greenfield, Alexander; Grosanu, Cristina; Dunlop, John; McIlvain, Beal; Carrick, Tikva; Jow, Brian; Lu, Qiang; Kowal, Dianne; Williams, John; Butera, John Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 22 p. 4985 - 4988