Production method of 3,6 O building a bridge reversal pyranose chemical compound and O piranoshido

摘要

This invention O piranoshido selectively, designates that useful 3,6 O building a bridge reversal pyranose chemical compound is offered furthermore as a O Glico sill conversion medicine in order to produce simply as topic.As for 3,6 O building a bridge reversal pyranose chemical compound of this invention, general system (1) Conversion 1 [In formula, R ^A and R ^B, together or connecting the hydrogen atom, mutually, show the fact that it forms benzene ring. As for R ^C and R ^D, shows the hydrogen atom on the one hand, another side shows the or2 basis. R¹ shows hydroxyl group or the halogen atom. R² and R³ shows the protective group of each hydroxyl group. ]So it is displayed.