Ikeda, Masahiko; Matsumura, Haruki; Sawada, Nobuyuki; Hashimoto, Katsuhiro; Tanaka, Tomoyuki; Noguchi, Toshihiro; Hayashi, Masaji Bioorganic and Medicinal Chemistry, 2000, vol. 8, # 7 p. 1809 - 1817 doi: 10.1016/S0968-0896(00)00106-1