TY - JOUR AU - Leung, M.-K; Yang, C.-C; Lee, J.-H; Tsai, H.-H; Lin, C.-F; Huang, C.-Y; Su, Y O; Chiu, C.-F JO - Org. Lett. VL - 9 PY - 2007 DO - 10.1021/ol062668+ SP - 235 ER -