Matsui, Yumi; Yamaguchi, Takahiro; Yamazaki, Takanori; Yoshida, Masayuki; Arai, Masami; Terasaka, Naoki; Honzumi, Shoko; Wakabayashi, Kenji; Hayashi, Shinko; Nakai, Daisuke; Hanzawa, Hiroyuki; Tamaki, Kazuhiko Bioorganic and Medicinal Chemistry Letters, 2015, vol. 25, # 18 p. 3914 - 3920 doi: 10.1016/j.bmcl.2015.07.047