Shimamoto, Keiko; Shigeri, Yasushi; Yasuda-Kamatani, Yoshimi; Lebrun, Bruno; Yumoto, Noboru; Nakajima, Terumi Bioorganic and Medicinal Chemistry Letters, 2000, vol. 10, # 21 p. 2407 - 2410 doi: 10.1016/S0960-894X(00)00487-X