Oshiyama, Takashi; Satoh, Takahito; Okano, Kentaro; Tokuyama, Hidetoshi Tetrahedron, 2012 , vol. 68, # 46 p. 9376 - 9383,8 Oshiyama, Takashi; Satoh, Takahito; Okano, Kentaro; Tokuyama, Hidetoshi Tetrahedron, 2012 , vol. 68, # 46 p. 9376 - 9383