Pfefferkorn, Jeffrey A.; Choi, Chulho; Song, Yuntao; Trivedi, Bharat K.; Larsen, Scott D.; Askew, Valerie; Dillon, Lisa; Hanselman, Jeffrey C.; Lin, Zhiwu; Lu, Gina; Robertson, Andrew; Sekerke, Catherine; Auerbach, Bruce; Pavlovsky, Alexander; Harris, Melissa S.; Bainbridge, Graeme; Caspers, Nicole Bioorganic and Medicinal Chemistry Letters, 2007, vol. 17, # 16 p. 4531 - 4537 doi: 10.1016/j.bmcl.2007.05.097