Azami, Hidenori; Barrett, David; Tanaka, Akira; Sasaki, Hiroshi; Matsuda, Keiji; Sakurai, Minoru; Terasawa, Takeshi; Shirai, Fumiyuki; Chiba, Toshiyuki; Matsumoto, Yoshimi; Tawara, Shuichi Bioorganic and Medicinal Chemistry, 2001, vol. 9, # 4 p. 961 - 982 doi: 10.1016/S0968-0896(00)00314-X