1. Key Laboratory of Xin’an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230012, People’s Republic of China
2. Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
3. Anhui Biochem Pharmaceutical Company, Limited, Taihe County, Fuyang, Anhui 236699, People’s Republic of China