Tsuchida, Keiichi; Chaki, Hisaaki; Takakura, Tadakazu; Kotsubo, Hironori; Tanaka, Tadashi; Aikawa, Yukihiko; Shiozawa, Shunichi; Hirono, Shuichi Journal of Medicinal Chemistry, 2006 , vol. 49, # 1 p. 80 - 91