YUE Xuan-Feng1, XIE Zun-Yuan1, WANG Shan-Shan1, WANG Zi-Zhen1, HONG Xin1, ZHANG Yan-Ni2**
1. Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering of Shaanxi Normal University, Xi’an 710062, China; 2. Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, School of Life Science of Shaanxi Normal University, Xi’an 710062, China