1. Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
2. State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Xili, Nanshan District Shenzhen 518055 China
3. School of Biotechnology and Health Sciences Wuyi University Jiangmen 529020 China
4. International Institute of Rare Sugar Research and Education & Faculty of Agriculture Kagawa University Kagawa 761-0795 Japan
5. Faculty of Agriculture and Life Science Hirosaki University Hirosaki 036-8561 Japan