Shigenaga, Akira; Morishita, Ko; Yamaguchi, Keiko; Ding, Hao; Ebisuno, Koji; Sato, Kohei; Yamamoto, Jun; Akaji, Kenichi; Otaka, Akira Tetrahedron, 2011 , vol. 67, # 46 p. 8879 - 8886