1. Laboratory of Natural Medicine Research and Development in Wuling Mountain School of Chemistry and Chemical Engineering Yangtze Normal University Fuling 408100 China
2. Key Laboratory of Marine Biogenetic Resources Third Institute of Oceanography, Ministry of Natural Resources 184 Daxue Road Xiamen 361005 China
3. State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan Key Laboratory of Natural Medicinal Chemistry Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China