1. Key Laboratory of Marine Drugs
2. The Ministry of Education of China
3. School of Medicine and Pharmacy
4. Ocean University of China
5. Qingdao 266003
6. Marine Biotechnology Laboratory
7. State Key Laboratory of Microbial Metabolism
8. School of Life Sciences & Biotechnology
9. Shanghai Jiao Tong University
10. Shanghai 200240
11. Key Laboratory of Pharmaceutical Quality Control of Hebei Province
12. College of Pharmaceutical Sciences
13. Hebei University
14. Baoding 071002
15. People's Republic of China