Suzuki, Toshio; Matsumura, Ryuji; Oku, Ken-ichi; Taguchi, Keiichi; Hagiwara, Hisahiro; Hoshi, Takashi; Ando, Masayoshi Tetrahedron Letters, 2001, vol. 42, # 1 p. 65 - 67 doi: 10.1016/S0040-4039(00)01880-3