Choi, Ha-Soon; Wang, Zhicheng; Richmond, Wendy; He, Xiaohui; Yang, Kunyong; Jiang, Tao; Sim, Taebo; Karanewsky, Donald; Gu, Xiang-Ju; Zhou, Vicki; Liu, Yi; Ohmori, Osamu; Caldwell, Jeremy; Gray, Nathanael; He, Yun Bioorganic and Medicinal Chemistry Letters, 2006 , vol. 16, # 8 p. 2173 - 2176