Kaller, Matthew R.; Zhong, Wenge; Henley, Charles; Magal, Ella; Nguyen, Thomas; Powers, David; Rzasa, Robert M.; Wang, Weiya; Xiong, Xiaoling; Norman, Mark H. Bioorganic and Medicinal Chemistry Letters, 2009 , vol. 19, # 23 p. 6591 - 6594