Fisher, Matthew J.; Backer, Ryan T.; Husain, Saba; Hsiung, Hansen M.; Mullaney, Jeffrey T.; O'Brian, Thomas P.; Ornstein, Paul L.; Rothhaar, Roger R.; Zgombick, John M.; Briner, Karin Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 20 p. 4459 - 4462