Ncert Exercises & Solutions

Structure of disaccharide formed by glucose and fructose is given below. Identify anomeric carbon atoms in monosaccharide units.

1. 'a' carbon of glucose and 'a' carbon of fructose

2. 'a' carbon of glucose and 'e' carbon of fructose

3. 'a' carbon of glucose and 'b' carbon of fructose

4. 'f' carbon of glucose and 'f' carbon of fructose

1. HINT: Anomeric carbon is the carbon which was hydrolyzed in the straight-chain structure.

Carbon adjacent to the oxygen atom in the cyclic structure of glucose or fructose is known as anomeric carbon. As shown in the structure above 'a' and 'b' are present adjacent to the oxygen atom. Both carbons differ in configurations of the hydroxyl group.

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