1. National Engineering Research Center for Carbohydrate SynthesisJiangxi Normal University, Nanchang 330022 Jiangxi China
2. Key Laboratory of Small Functional Organic Molecule, Ministry of EducationJiangxi Normal University, Nanchang Jiangxi 330022 P.R. China
3. Research Center for Traditional Chinese Medicine Resources and Ethnic Minority MedicineJiangxi University of Traditional Chinese Medicine China
4. Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of ChemistryChinese Academy of Sciences Beijing 100190 China