Synthesis of dispirodioxanyl pseudo-oligosaccharides by selective protonic activation of isomeric glycosylfructoses in anhydrous hydrogen fluoride
作者:Jacques Defaye、José Manuel García Fernández
DOI:10.1016/0008-6215(94)84273-6
日期:1994.1
-beta-D-fructofuranose 1,2':2,1'-dianhydride were respectively obtained, on a preparative scale, by dissolution of the isomeric glycosylfructoses palatinose, leucrose, maltulose, lactulose, and turanose in anhydrous hydrogen fluoride. The reaction, involving selective protonation at the free anomeric position of the fructose unit, was extended to the preparation of the pseudotrisaccharides 6-O-alp
和无水氟化氢中的杜拉糖。该反应涉及在果糖单元的游离端异构位置处的选择性质子化,扩展到假三糖6-O-α-D-吡喃葡萄糖基-α-D-果糖呋喃糖β-D-果糖基1,2,:2的制备使用tu醛糖和麦芽糖作为二糖前体,从帕拉金糖和果糖中分离出',1-二酐,以及生成其3-O-,4-O-和4'-O-葡萄糖基类似物。帕拉金糖与麦芽糖和白糖的交叉反应导致制备6-O-α-D-吡喃葡萄糖基-α-D-果糖呋喃糖4-O-α-D-吡喃葡萄糖基-β-D-果糖吡喃糖1,2' :2,1'-二酐和6-O-α-D-吡喃葡萄糖基-α-D-果糖呋喃糖5-O-α-D-吡喃葡萄糖基-β-D-果糖吡喃糖1,2':2,1'-二酐分别。该反应涉及在果糖单元的游离端异构位置处的选择性质子化,扩展到假三糖6-O-α-D-吡喃葡萄糖基-α-D-果糖呋喃糖β-D-果糖基1,2,:2的制备使用tu醛糖和麦芽糖作为二糖前体,从帕拉金糖和果糖中分离出',1-