1. School of Pharmacy, Health Science Center, Xi'an Jiaotong University , No. 76, Yanta West Street, #54, Xi'an, Shaanxi 710061 , China
2. Department of Chemistry, Faculty of Science, Universiti Malaya , 50603 Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur , Malaysia
3. State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology , Avenida Wai Long, Taipa, Macau , China
4. State Key Laboratory of Shaanxi for Natural Medicines Research and Engineering , No. 76, Yanta West Street, #54, Xi'an, Shaanxi 710061 , China