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Determine the total number of chiral carbon atoms present in the cyclic -D-glucopyranose molecule.Biomolecules Chemistry Question

Question

Determine the total number of chiral carbon atoms present in the cyclic $\alpha$ -D-glucopyranose molecule.

Answer: C

💡 Solution & Explanation

While open-chain glucose has 4 chiral centers, cyclization converts the planar C-1 carbonyl carbon into a new stereocenter (the anomeric carbon). Thus, cyclic $\alpha$ -D-glucopyranose has 5 chiral carbons.

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