Miyazawa, Mamoru; Tokuhashi, Takashi; Horibata, Akiyoshi; Nakamura, Takatoshi; Onozaki, Yu; Kurono, Nobuhito; Senboku, Hisanori; Tokuda, Masao; Ohkuma, Takeshi; Orito, Kazuhiko Journal of Heterocyclic Chemistry, 2013, vol. 50, # SUPPL.1 p. E48-E54 doi: 10.1002/jhet.1044