1. Department of Medicinal Chemistry, School of Pharmacy Qingdao University, Qingdao University Medical College Qingdao Shandong China
2. Institute of Innovative Drugs Qingdao University Qingdao Shandong China
3. State Key Laboratory Base for Eco‐Chemical Engineering in College of Chemical Engineering Qingdao University of Science and Technology Qingdao Shandong China