Iyoda, Masahiko; Kuwatani, Yoshiyuki; Ogura, Eiji; Hara, Kenji; Suzuki, Hironori; Takano, Takahiro; Takeda, Koji; Takano, Jun-ichi; Ugawa, Kohei; Yoshida, Masato; Matsuyama, Haruo; Nishikawa, Hiroyuki; Ikemoto, Isao; Kato, Takehiro; Yoneyama, Naoki; Nishijo, Jun-ichi; Miyazaki, Akira; Enoki, Toshiaki
Heterocycles, 2001 , vol. 54, # 2 p. 833 - 848