Utilization of Sugars in Organic Synthesis. Part XXVI. Chemistry of Oxo-Sugars (1). Rearrangement of 2-Oxoglycosides in Pyridine: Evidence of Intramolecular Hydride Shift.
作者:Yoshisuke TSUDA、Hong-Min LIU
DOI:10.1248/cpb.40.1975
日期:——
Methyl α- and β-D-arabinohexopyranosid-2-uloses rearranged, in pyridine, into methyl α- and β-D-ribo-hexopyranosid-3-uloses through intermediacy of methyl α- and β-D-arabinohexopyranosid-3-uloses, respectively, indicating that an intramolecular hydride shift is the initial reaction for rearrangement of 2-oxoglycosides.
甲基 α- 和 β-D-arabinoxopyranosid-2-uloses 在吡啶中分别通过中间体甲基 α- 和 β-D-arabinoxopyranosid-3-uloses 重排为甲基 α- 和 β-D-ribo-hexopyranosid-3-uloses ,这表明分子内氢化物转移是 2-氧代糖苷重排的初始反应。