參考文獻:
Kopecky, David J. Hao, Xiaolin Chen, Yi Fu, Jiasheng Jiao, XianYun Jaen, Juan C. Cardozo, Mario G. Liu, Jinsong Wang, Zhulun Walker, Nigel P.C. Wesche, Holger Li, Shyun Farrelly, Ellyn Xiao, Shou-Hua Kayser, Frank Bioorganic and Medicinal Chemistry Letters, 2008 , vol. 18, # 24 p. 6352 - 6356