Finke, Paul E.; Meurer, Laura C.; Levorse, Dorothy A.; Mills, Sander G.; MacCoss, Malcolm; Sadowski, Sharon; Cascieri, Margaret A.; Tsao, Kwei-Lan; Chicchi, Gary G.; Metzger, Joseph M.; MacIntyre, D. Euan Bioorganic and Medicinal Chemistry Letters, 2006, vol. 16, # 17 p. 4497 - 4503 doi: 10.1016/j.bmcl.2006.06.035