Arienzo, Rosa; Clark, David E.; Cramp, Sue; Daly, Stephen; Dyke, Hazel J.; Lockey, Peter; Norman, Dennis; Roach, Alan G.; Stuttle, Keith; Tomlinson, Maxine; Wong, Melanie; Wren, Stephen P. Bioorganic and Medicinal Chemistry Letters, 2004 , vol. 14, # 15 p. 4099 - 4102