Toyota, Shinji; Mamiya, Daiki; Yoshida, Rie; Tanaka, Ryo; Iwanaga, Tetsuo; Orita, Akihiro; Otera, Junzo Synthesis (Germany), 2013 , vol. 45, # 8 art. no. SS-2013-F0043-OP, p. 1060 - 1068