1. Guangdong Medical College, School of Pharmacy
2. Dongguan, PR China
3. Guangxi Key Laboratory of Chemistry and Engineering of Forest Products
4. Guangxi University for Nationalities
5. College of Chemistry and Chemical Engineering
6. Nanning, China
7. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education
8. Shaanxi Key Laboratory of Physico-Inorganic Chemistry
9. Northwest University
10. Xi'an 710069, PR China
11. Department of Material and Biological Chemistry
12. Faculty of Science
13. Yamagata University
14. Yamagata 990-8560, Japan