Anomers are those stereoisomers which differ in the configuration at

Options

A. `C_(1)`
B. `C_(2)`
C. Both
D. Glycosidic carbon

Answer

D

Explanation

In aldoses (e.g. glucose) the two anomers (`alpha-` and `beta-` group), while in ketoses (e.g. fructose) the two anomers differ at `C_(2)` (Carbon having carbonyl, keto group). Such carbon (-CHO in aldoses which is `C_(1)`: and `gtC=O` in ketoses which is `C_(2)`) reacts with the -OH group present at another carbon atom to form glycosides, also known as anomers. Thus `C_(1)` in aldoses and `C_(2)` in ketoses constitute the anomeric or glycoisidic carbon.