Maruyama, Tatsuya; Onda, Kenichi; Hayakawa, Masahiko; Suzuki, Takayuki; Kimizuka, Tetsuya; Matsui, Tetsuo; Takasu, Toshiyuki; Nagase, Itsuro; Hamada, Noritaka; Ohta, Mitsuaki Chemical and Pharmaceutical Bulletin, 2010 , vol. 58, # 4 p. 533 - 545