Koshio, Hiroyuki; Hirayama, Fukushi; Ishihara, Tsukasa; Taniuchi, Yuta; Sato, Kazuo; Sakai-Moritani, Yumiko; Kaku, Seiji; Kawasaki, Tomihisa; Matsumoto, Yuzo; Sakamoto, Shuichi; Tsukamoto, Shin-Ichi Bioorganic and Medicinal Chemistry, 2004 , vol. 12, # 9 p. 2179 - 2191