参考文献

Beard, Richard L.; Teng, Min; Colon, Diana F.; Duong, Tien T.; Thacher, Scott M.; Arefieg, Taghreed; Chandraratna, Roshantha A.S. Bioorganic and Medicinal Chemistry Letters, 1997 , vol. 7, # 18 p. 2373 - 2378