Powell, Dennis; Gopalsamy, Ariamala; Wang, Yanong D.; Zhang, Nan; Miranda, Miriam; McGinnis, John P.; Rabindran, Sridhar K. Bioorganic and Medicinal Chemistry Letters, 2007, vol. 17, # 6 p. 1641 - 1645 doi: 10.1016/j.bmcl.2006.12.116