1. College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China
2. Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi, P. R. China
3. Engineeing Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps Basin, Tarim University, Alar, China