1. Department of Chemistry, National Cheng Kung University, Tainan, Taiwan, Republic of China, Pharmacological Institute, College of Medicine, National Taiwan University, Taipei, Taiwan, Republic of China, Graduate Institute of Pharmaceutical Chemistry and Department of Pharmacy, China Medical University, Taichung 401, Taiwan, Republic of China, Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, Yunnan, People‘s Republic of China, and Natural Products Research Laboratories, UNC...