In D-glucose (X) and D-fructose (Y),which hyd | vedclass

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(A) In $D-glucose$ $(X)$,the hydroxyl group at $C-5$ attacks the aldehyde group at $C-1$ to form a six-membered pyranose ring (hemiacetal).In $D-fruct

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$C-5$ in both $X$ and $Y$

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(A) In $D-glucose$ $(X)$,the hydroxyl group at $C-5$ attacks the aldehyde group at $C-1$ to form a six-membered pyranose ring (hemiacetal).In $D-fructose$ $(Y)$,the hydroxyl group at $C-5$ attacks the ketone group at $C-2$ to form a five-membered furanose ring (hemiketal).Therefore,in both cases,the hydroxyl group at $C-5$ participates in the ring formation.

In $D-glucose$ $(X)$ and $D-fructose$ $(Y)$,which hydroxyl group participates in hemiacetal/hemiketal formation?

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