1. Department of Natural products Chemistry, College of Pharmacy; Jilin University; 1266 Fujin Road Changchun 130021 People's Republic of China
2. Chinese Medicine Research Center; The Affiliated Hospital To Changchun University of Chinese Medicine; 1478 Gongnong Road Changchun 130021 People's Republic of China
3. College of Chemistry; Jilin University; 2699 Qianjin Street Changchun 130012 People's Republic of China