Kiho, Toshihiro; Nakayama, Mizuka; Yasuda, Kayo; Miyakoshi, Shunichi; Inukai, Masatoshi; Kogen, Hiroshi Bioorganic and Medicinal Chemistry, 2004, vol. 12, # 2 p. 337 - 361 doi: 10.1016/j.bmc.2003.10.055