1. Key Laboratory of Marine Drugs Ministry of Education School of Medicine and Pharmacy Ocean University of China 5 Yushan Road 266003 Qingdao Shandong P. R. China
2. Laboratory of Marine Drugs and Biological Products Pilot National Laboratory for Marine Science and Technology School of Medicine and Pharmacy Ocean University of China 168 Middle Wenhai Road 266235 Qingdao Shandong P. R. China
3. State Key Laboratory of Coordination Chemistry and Jiangsu Key Laboratory of Advanced Organic Materials School of Chemistry and Chemical Engineering Nanjing University 163 Xianlin Avenue 210023 Nanjing Jiangsu P. R. China