Moore, Kevin W.; Bonner, Katrine; Jones, Elizabeth A.; Emms, Frances; Leeson, Paul D.; Marwood, Rosemary; Patel, Shil; Patel, Smita; Rowley, Michael; Thomas, Steven; Carling, Robert W. Bioorganic and Medicinal Chemistry Letters, 1999 , vol. 9, # 9 p. 1285 - 1290