Jin, Yafei; Gill, Sumandeep K.; Kirchhoff, Paul D.; Wan, Baojie; Franzblau, Scott G.; Garcia, George A.; Showalter, H.D. Hollis Bioorganic and Medicinal Chemistry Letters, 2011, vol. 21, # 20 p. 6094 - 6099 doi: 10.1016/j.bmcl.2011.08.054