Kang, Dong Wook; Ryu, HyungChul; Lee, Jeewoo; Lang, Krystle A.; Pavlyukovets, Vladimir A.; Pearce, Larry V.; Ikeda, Tetsurou; Lazar, Jozsef; Blumberg, Peter M. Bioorganic and Medicinal Chemistry Letters, 2007 , vol. 17, # 1 p. 214 - 219