参考文献

Hatakeyama, Susumi; Yoshida, Masashi; Esumi, Tomoyuki; Iwabuchi, Yoshiharu; Irie, Hiroshi; Kawamoto, Toshiki; Yamada, Hidetoshi; Nishizawa, Mugio Tetrahedron Letters, 1997, vol. 38, # 45 p. 7887 - 7890 doi: 10.1016/S0040-4039(97)10077-6