Matsumura, Ryuji; Suzuki, Toshio; Sato, Kohki; Inotsume, Takashi; Hagiwara, Hisahiro; Hoshi, Takashi; Kamat, Vijayendra P.; Ando, Masayoshi Tetrahedron Letters, 2000, vol. 41, # 40 p. 7697 - 7700 doi: 10.1016/S0040-4039(00)01344-7