Kambe, Tohru; Maruyama, Toru; Nakai, Yoshihiko; Oida, Hiroji; Maruyama, Takayuki; Abe, Nobutaka; Nishiura, Akio; Nakai, Hisao; Toda, Masaaki Bioorganic and Medicinal Chemistry, 2012, vol. 20, # 11 p. 3502 - 3522 doi: 10.1016/j.bmc.2012.04.008