1. Innovation Research Institute of Traditional Chinese MedicineShanghai University of Traditional Chinese Medicine 1200 Cai Lun Road Shanghai 201203 China
2. National Engineering Research Centre for Carbohydrate SynthesisJiangxi Normal University Nanchang 330022 China
3. State Key Laboratory of Bioorganic and Natural Products ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Road Shanghai 200032 China