1. Department of Natural Resources Science, University of Rhode Island, 105 Coastal Institute in Kingston, 1 Greenhouse Road, Kingston, RI 02881, USA
2. Bioactive Botanical Research Laboratory, Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, 7 Greenhouse Road, University of Rhode Island, Kingston, RI 02881, USA
3. The Key Laboratory of Plant Resources and Chemistry of Arid Zone, State Key Laboratory of Xinjiang Indigenous Medicinal Plants Resource Utilization, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, China