1. College
of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, People’s Republic of China
2. Basic Medical College of Zhengzhou University, Zhengzhou, Henan 450001, People’s Republic of China
3. Key Laboratory of Chemical
Biology and Organic Chemistry of Henan Province, Zhengzhou University, Zhengzhou, Henan 450052, People’s Republic of China
4. Convance Laboratories, Incorporated, Madison, Wisconsin 53704-2523, United States