Sui, Zhihua; Guan, Jihua; Macielag, Mark J.; Jiang, Weiqin; Qiu, Yuhong; Kraft, Patricia; Bhattacharjee, Sheela; John, T. Matthew; Craig, Elizabeth; Haynes-Johnson, Donna; Clancy, Joanna Bioorganic and Medicinal Chemistry Letters, 2003 , vol. 13, # 4 p. 761 - 765