1. Key Laboratory of Medicinal Chemistry for Natural Resources
2. Chemistry Department
3. Yunnan University
4. Kunming
5. P. R. China
6. State Key Laboratory for Mechanical Behavior of Materials
7. Xi'an Jiaotong University
8. Xi'an
9. University of Stuttgart
10. Institute of Physical Chemistry
11. Stuttgart
12. Germany
13. Institute of Chemistry
14. Organic Chemistry
15. Martin Luther University Halle-Wittenberg
16. 06120 Halle/Saale