參考文獻:
Ennis, Michael D. Hoffman, Robert L. Ghazal, Nabil B. Olson, Rebecca M. Knauer, Christopher S. Chio, Chris L. Hyslop, Deborah K. Campbell, Jeffery E. Fitzgerald, Lawrence W. Nichols, Nanette F. Svensson, Kjell A. McCall, Robert B. Haber, Christopher L. Kagey, Michelle L. Dinh, Dac M. Bioorganic and Medicinal Chemistry Letters, 2003 , vol. 13, # 14 p. 2369 - 2372