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Chapter 8: Q7CP (page 227)

Explain why a sugar can form at least two different glycosides.

Short Answer

Expert verified

Sugar form an O-glycosidic bond between the anomeric C atom and OH group and an N-glycosidic bond between the anomeric C atom and NH2 group.

Step by step solution

01

Introduction of glycosidic bonds.

Glycosidic bonds are the covalent bonds that enjoin any carbohydrate molecule to another group which can either be carbohydrate or other group.

02

Explanation for sugar forming two different glycosides.

Sugar forms two glycosides when the anomeric carbon atom undergoes condensation with the OH group from another alcohol to form an O-glycosidic bond or NH2 group from an amine N-glycosidic bond.

Hence, an O-glycosidic link is formed between the anomeric C atom and an OH group from another alcohol, or an N-glycosidic bond is formed between the anomeric C atom and an NH or NH2 group from an amine.

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