1. State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Chemical Biology of Hebei Province, Hebei Research Center of the Basic Discipline of Synthetic Chemistry, College of Chemistry and Materials Science, Hebei University, Baoding 071002, PR China
2. Department of Chemistry, Tianjin University, Tianjin 300354, PR China
3. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, P.R. China
4. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China