Which carbon of the open-chain form of a sugar becomes the anomeric carbon in the cyclic form?

Name: Which carbon of the open-chain form of a sugar becomes the anomeric carbon in the cyclic form?
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Question

Quizplus · Accepted Answer

The carbonyl carbon (either aldehyde or ketone carbon) in the open-chain form of a sugar becomes the anomeric carbon when the sugar cyclizes. This is because during cyclization, the carbonyl carbon reacts to form a new stereocenter, which is the anomeric carbon.

Which Carbon of the Open-Chain Form of a Sugar Becomes