Hirayama, Fukushi; Koshio, Hiroyuki; Ishihara, Tsukasa; Watanuki, Susumu; Hachiya, Shunichiro; Kaizawa, Hiroyuki; Kuramochi, Takahiro; Katayama, Naoko; Kurihara, Hiroyuki; Taniuchi, Yuta; Sato, Kazuo; Sakai-Moritani, Yumiko; Kaku, Seiji; Kawasaki, Tomihisa; Matsumoto, Yuzo; Sakamoto, Shuichi; Tsukamoto, Shin-ichi Bioorganic and Medicinal Chemistry, 2002 , vol. 10, # 8 p. 2597 - 2610