A glucopyranose having hydroxyl group -OH, on carbon atom 1, below the ring is called:
Correct answer: A. α-glucose
- A. α-glucose
- B. β-glucose
- C. D-glucose
- D. L-glucose
Explanation
The correct answer is α-glucose. In the Haworth projection of glucopyranose, if the hydroxyl group attached to the anomeric carbon (carbon 1) is below the ring, it is termed α-glucose. Conversely, if the hydroxyl group is above the ring, it is termed β-glucose. Options C and D, D-glucose and L-glucose, refer to different stereoisomers of glucose based on the configuration of the chiral center farthest from the carbonyl group and are not directly related to the position of the hydroxyl group on the anomeric carbon.
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