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(D) Tollen's reagent reacts with reducing sugars that possess a free anomeric $-OH$ group, which allows for mutarotation and the formation of an open-

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Only $B$

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(D) Tollen's reagent reacts with reducing sugars that possess a free anomeric $-OH$ group, which allows for mutarotation and the formation of an open-chain aldehyde form.Structure $(A)$ is $\alpha$-$D$-glucopyranose, which has a free anomeric $-OH$ group at the $C1$ position, making it a reducing sugar that reacts with Tollen's reagent.Structure $(B)$ is methyl $\alpha$-$D$-glucopyranoside, which is an acetal (the anomeric $-OH$ is replaced by an $-OCH_3$ group).Since acetals cannot undergo mutarotation to form an open-chain aldehyde, they do not react with Tollen's reagent.Therefore, only structure $(B)$ will not react with Tollen's reagent.

From the given cyclic structures ($A$ and $B$), which one will not react with Tollen's reagent?

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