Misra, Raj N.; Xiao, Hai-Yun; Rawlins, David B.; Shan, Weifang; Kellar, Kristen A.; Mulheron, Janet G.; Sack, John S.; Tokarski, John S.; Kimball, S. David; Webster, Kevin R. Bioorganic and Medicinal Chemistry Letters, 2003, vol. 13, # 14 p. 2405 - 2408 doi: 10.1016/S0960-894X(03)00381-0