Boschelli, Diane H.; Ye, Fei; Wu, Biqi; Wang, Yanong D.; Barrios Sosa, Ana Carolina; Yaczko, Deanna; Powell, Dennis; Golas, Jennifer M.; Lucas, Judy; Boschelli, Frank Bioorganic and Medicinal Chemistry Letters, 2003 , vol. 13, # 21 p. 3797 - 3800