Kobayashi, Toshitake; Sasaki, Satoshi; Tomita, Naoki; Fukui, Seiji; Kuroda, Noritaka; Nakayama, Masaharu; Kiba, Atsushi; Takatsu, Yoshihiro; Ohtaki, Tetsuya; Itoh, Fumio; Baba, Atsuo Bioorganic and Medicinal Chemistry, 2010 , vol. 18, # 11 p. 3841 - 3859