Iguchi, Kazuo; Kaneta, Soichiro; Mori, Kenichiro; Yamada, Yasuji; Honda, Atsushi; Mori, Yo Tetrahedron Letters, 1985, vol. 26, # 47 p. 5787 - 5790 doi: 10.1016/S0040-4039(00)98927-5