(untitled) - Yamamoto, T; Ohno, S; Niwa, S; Tokumasu, M; Hagihara, M; Koganei, H; Fujita, S.-i; Takeda, T; Saitou, Y; Iwayama, S; Takahara, A; Iwata, S; Shoji, M (Bioorg. Med. Chem. Lett., 2011)