Semple, Graeme; Tran, Thuy-Anh; Kramer, Bryan; Hsu, Debbie; Han, Sangdon; Choi, Juyi; Vallar, Pureza; Casper, Martin D.; Zou, Ning; Hauser, Erin K.; Thomsen, William; Whelan, Kevin; Sengupta, Dipanjan; Morgan, Michael; Sekiguchi, Yoshinori; Kanuma, Kosuke; Chaki, Shigeyuki; Grottick, Andrew J. Bioorganic and Medicinal Chemistry Letters, 2009 , vol. 19, # 21 p. 6166 - 6171