Selective protonic activation of isomeric glycosylfructoseswith pyridinium poly(hydrogen fluoride) and synthesis of spirodioxanyl oligosaccharides
作者:Jacques Defaye、José Manuel Garcia Fernández
DOI:10.1016/s0008-6215(92)84246-o
日期:1992.12
Selectiveactivation of the ketose unit in the isomericglycosylfructoses, palatinose, leucrose, maltulose, turanose and lactulose, with pyridinium poly(hydrogenfluoride) resulted in the almost quantitative formation of glycosylated difructose dianhydrides. The reaction preferentially involves a reactive fructofuranosyl oxocarbenium ion and is subject to stereoelectronic control. The relative amounts