Hamamoto, Hiromi; Mamedov, Vakhid A.; Kitamoto, Makiko; Hayashi, Nobuyuki; Tsuboi, Sadao Tetrahedron Asymmetry, 2000, vol. 11, # 22 p. 4485 - 4497 doi: 10.1016/S0957-4166(00)00418-3