1. State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park Shanghai 201203 P. R. China
2. University of Chinese Academy of Sciences No. 19 A Yuquan Road Beijing 100049 P. R. China
3. College of Pharmaceutical Science Zhejiang University of Technology No. 18 Chaowang Road Hangzhou 310014 P. R. China
4. Jealott's Hill International Research Centre Syngenta Bracknell Berkshire RG42 6EY UK
5. Shandong Laboratory of Yantai Drug Discovery Bohai Rim Advanced Research Institute for Drug Discovery Yantai Shandong 264117 P. R. China