參考文獻:
Cooper, Laura C. Chicchi, Gary G. Dinnell, Kevin Elliott, Jason M. Hollingworth, Gregory J. Kurtz, Marc M. Locker, Karen L. Morrison, Denise Shaw, Duncan E. Tsao, Kwei-Lan Watt, Alan P. Williams, Angela R. Swain, Christopher J. Bioorganic and Medicinal Chemistry Letters, 2001 , vol. 11, # 9 p. 1233 - 1236