(untitled) - Kogen, H; Toda, N; Tago, K; Marumoto, S; Takami, K; Ori, M; Yamada, N; Koyama, K; Naruto, S; Abe, K; Yamazaki, R; Hara, T; Aoyagi, A; Abe, Y; Kaneko, T (Org. Lett., 2002)