Hu, Baihua; Ellingboe, John; Gunawan, Iwan; Han, Stella; Largis, Elwood; Li, Zenan; Malamas, Michael; Mulvey, Ruth; Oliphant, Alexander; Sum, Fuk-Wah; Tillett, Jeff; Wong, Victoria Bioorganic and Medicinal Chemistry Letters, 2001 , vol. 11, # 6 p. 757 - 760