1. College of Pharmacy, Inner Mongolia Medical University, Jinshan Development Zone, Hohhot, Inner Mongolia, 010110, P. R. China
2. Academy of Mongolian Medicine, Inner Mongolia Medical University, Jinshan Development Zone, Hohhot, Inner Mongolia, 010110, P. R. China
3. Inner Mongolia Key Laboratory of Green Catalysis, College of Chemistry and Environmental Science, Inner Mongolia Normal University, Inner Mongolia, 010022, P. R. China
4. Institute of Mongolian Medicinal Chemistry, School of Chemistry & Chemical Engineering, Inner Mongolia University, Hohhot, Inner Mongolia, 010020, P. R. China