(untitled) - Zeng, X X; Zheng, R L; Zhou, T; He, H Y; Liu, J Y; Zheng, Y; Tong, A P; Xiang, M L; Song, X R; Yang, S Y; Yu, L T; Wei, Y Q; Zhao, Y L; Yang, L (Bioorg. Med. Chem. Lett., 2010)