Mori, Yuichiro; Kobayashi, Juta; Manabe, Kei; Kobayashi, Shi
Tetrahedron, 2002 , vol. 58, # 41 p. 8263 - 8268

Murakami, Kei; Ohmiya, Hirohisa; Yorimitsu, Hideki; Oshima, Koichiro
Tetrahedron Letters, 2008 , vol. 49, # 15 p. 2388 - 2390