4-bis-O-tert-butyldiphenylsilyl-d-glucopyranoses as well as the corresponding phenyl 1-thio-d-glucopyranosides were investigated. Observations showed that the introduction of the two tert-butyldiphenylsilyl groups can flip the pyranose-ring into the 1C4 conformation possessing more axial substituents. All the substituents of the 3,4-bis-O-tert-butyldiphenylsilyl-β-d-glucopyranose were axially oriented.
的3,4-双-环构象ø -叔-butyldimethylsilyl-和3,4-双- ø -叔-butyldiphenylsilyl-
D-吡喃葡萄糖ef=https://www.molaid.com/MS_187149 target="_blank">吡喃
葡萄糖以及相应的苯基1-
硫代
D-吡喃葡萄糖ef=https://www.molaid.com/MS_187149 target="_blank">吡喃
葡萄糖苷进行了调查。观察表明,引入两个叔丁基二苯基甲
硅烷基可以将
吡喃糖环翻转为具有更多轴向取代基的1 C 4构象。3,4-双-的所有取代基ø -叔-butyldiphenylsilyl-β-d-
D-吡喃葡萄糖被轴向定向。