Kambe, Tohru; Maruyama, Toru; Nakano, Masayuki; Yamaura, Yoshiyuki; Shono, Tomoyuki; Seki, Akiteru; Sakata, Kiyoto; Maruyama, Takayuki; Nakai, Hisao; Toda, Masaaki Chemical and Pharmaceutical Bulletin, 2011, vol. 59, # 12 p. 1523 - 1534 doi: 10.1248/cpb.59.1523