Wu, Chengde; Chan, Ming F.; Stavros, Fiona; Raju; Okun, Ilya; Mong, Seymour; Keller, Karin M.; Brock, Tommy; Kogan, Timothy P.; Dixon, Richard A. F. Journal of Medicinal Chemistry, 1997 , vol. 40, # 11 p. 1690 - 1697