1. China–Japan Research Institute of Medical and Pharmaceutical Sciences
2. Shenyang Pharmaceutical University
3. Shenyang 110016
4. China
5. Department of Natural Products Chemistry
6. Key Laboratory of Structure-Based Drug Design & Discovery (Ministry of Education)
7. Japan SLC, Inc.
8. Shizuoka 431-1103
9. Japan
10. Department of Medical Education & Primary Care
11. Kyoto Prefectural University of Medicine
12. Kyoto 602-8566