1. Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf, Düsseldorf, Germany;
2. Department of Pharmaceutical and Medicinal Chemistry, Namdi Azikiwe University, Awka, Nigeria;
3. Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt;
4. Institute of Physiological Chemistry, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Germany;
5. State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Health Science Centre, Beijing, People’s Republic of China