Maezaki, Naoyoshi; Sakamoto, Atsunobu; Nagahashi, Noboru; Soejima, Motohiro; Li, Ying-Xia; Imamura, Tsuneaki; Kojima, Naoto; Ohishi, Hirofumi; Sakaguchi, Ken-Ichi; Iwata, Chuzo; Tanaka, Tetsuaki Journal of Organic Chemistry, 2000, vol. 65, # 11 p. 3284 - 3291 doi: 10.1021/jo9919409