參考文獻:
Chen, Jian Jeffrey Dewdney, Nolan Lin, Xiaohong Martin, Robert L. Walker, Keith A. M. Huang, Jane Chu, Frances Eugui, Elsie Mirkovich, Anna Kim, Yong Sarma, Keshab Arzeno, Humberto Van Wart, Harold E. Bioorganic and Medicinal Chemistry Letters, 2003 , vol. 13, # 22 p. 3951 - 3954