Fang, Jing-Kun; An, De-Lie; Wakamatsu, Kan; Ishikawa, Takeharu; Iwanaga, Tetsuo; Toyota, Shinji; Matsuo, Daisuke; Orita, Akihiro; Otera, Junzo
Tetrahedron Letters, 2010 , vol. 51, # 6 p. 917 - 920