| 摘要 |
<p>The present invention addresses the problem of providing a highly-versatile method for easily producingα-O-pyranosides with a high degree of selectivity without establishing severe reaction conditions, and a pyranose donor used in said method. The 3,6-O-crosslinked pyranose compound according to the present invention is a compound represented by general formula (1) (therein, R1 represents a -SR6 group (R6 being an optionally-substituted lower alkyl group or the like) or the like, R2 represents a hydrogen atom or the like, R3 represents a hydrogen atom or the like, R4 and R5 each represent an optionally-halogenated lower alkyl group or the like, n represents an integer of 1-4, and p and q each represent an integer of 0-4), or an enantiomer thereof.</p> |
