Sekiguchi, Mitsuaki; Obika, Satoshi; Harada, Yasuki; Osaki, Tomohisa; Somjing, Roongjang; Mitsuoka, Yasunori; Shibata, Nao; Masaki, Miyuki; Imanishi, Takeshi Journal of Organic Chemistry, 2006, vol. 71, # 4 p. 1306 - 1316 doi: 10.1021/jo051187l