Aotake, Tatsuya; Yamashita, Yuko; Okujima, Tetsuo; Shirasawa, Nobuhiko; Jo, Yukari; Fujimori, Shigeo; Uno, Hidemitsu; Ono, Noboru; Yamada, Hiroko
Tetrahedron Letters, 2013 , vol. 54, # 14 p. 1790 - 1793