α-D-glucose and β -D-glucose exhibit which one of the following types of isomersSelect one:a. Stereoisomersb. Enantiomersc. Anomersd. Epimers
Question
α-D-glucose and β-D-glucose exhibit which one of the following types of isomers
Select one:
- a. Stereoisomers
- b. Enantiomers
- c. Anomers
- d. Epimers
Solution
α-D-glucose and β -D-glucose are examples of Anomers.
Anomers are a type of stereoisomer and specifically, they are a subtype of epimers. They are cyclic monosaccharides or glycosides that differ in configuration only at the hemiacetal or hemiketal carbon, also called the anomeric carbon.
In the case of glucose, α-D-glucose and β -D-glucose are anomers that differ in the configuration of the hydroxyl group at the anomeric carbon (C1 in glucose). In α-D-glucose, the hydroxyl group at the anomeric carbon is in the axial position (below the plane of the ring), while in β-D-glucose, it is in the equatorial position (above the plane of the ring).
So, the correct answer is c. Anomers.
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