Dou, Dengfeng; He, Guijia; Li, Yi; Lai, Zhong; Wei, Liuqing; Alliston, Kevin R.; Lushington, Gerald H.; Eichhorn, David M.; Groutas, William C.
Bioorganic and Medicinal Chemistry, 2010 , vol. 18, # 3 p. 1093 - 1102

Nippon Kayaku Kabushiki Kaisha
Patent: US4091109 A1, 1978 ;