* Corresponding authors

^a Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an 710062, China
E-mail: wangpan@snnu.edu.cn
Tel: +86-29-8531-0275

^b School of Chemistry and Materials Science, Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, Key Laboratory of Applied Photochemistry, Nanjing Normal University, Wenyuan Road No. 1, Nanjing 210023, China
E-mail: shwei@njnu.edu.cn

^c Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, No. 16, Suojin 5th Village, Nanjing 210042, China