1. State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University 550014 Guiyang P. R. China
2. Natural Products Research Center of Guizhou Province 550014 Guiyang P. R. China
3. National Key Laboratory of Green Pesticide State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering Key Laboratory of Green Pesticide and Agricultural Bioengineering Ministry of Education Center for Research and Development of Fine Chemicals Guizhou University 550025 Guiyang P. R. China