Takashiro, Eiji; Watanabe, Takashi; Nitta, Tamayo; Kasuya, Atsushi; Miyamoto, Shuichi; Ozawa, Yuji; Yagi, Ryuichi; Nishigaki, Takashi; Shibayama, Takahiro; Nakagawa, Akihiko; Iwamoto, Aikichi; Yabe, Yuichiro Bioorganic and Medicinal Chemistry, 1998, vol. 6, # 5 p. 595 - 604 doi: 10.1016/S0968-0896(98)00004-2