Katoh, Tadashi; Izuhara, Takashi; Yokota, Wakako; Inoue, Munenori; Watanabe, Kazuhiro; Nobeyama, Ayaka; Suzuki, Takeyuki Tetrahedron, 2006, vol. 62, # 7 p. 1590 - 1608 doi: 10.1016/j.tet.2005.10.082