Yokokawa, Fumiaki; Sameshima, Hirofumi; Katagiri, Daichi; Aoyama, Toyohiko; Shioiri, Takayuki Tetrahedron, 2002, vol. 58, # 46 p. 9445 - 9458 doi: 10.1016/S0040-4020(02)01224-3