参考文献

Yang, Xin; Matsuo, Daisuke; Suzuma, Yoshinori; Fang, Jing-Kun; Xu, Feng; Orita, Akihiro; Otera, Junzo; Kajiyama, Shingo; Koumura, Nagatoshi; Hara, Kohjiro Synlett, 2011 , # 16 art. no. U04611ST, p. 2402 - 2406