College of Chemistry & Chemical Engineering Xianyang Normal University Xianyang 712000 China;
College of Chemistry & Chemical Engineering Xianyang Normal University Xianyang 712000 China;
College of Chemistry & Chemical Engineering Xianyang Normal University Xianyang 712000 China;
Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China and School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an 710062 China;