The disaccharides formed by the α-1,4-glycosidic linkage of two D-mannose have to be drawn and compare the reducing property of this disaccharide with glyosidic products of problem 20.58. Concept introduction: Glycosidic linkage forms disaccharide by reaction of the – O H group on the anomeric carbon of one monosaccharide with an – O H group of a second monosaccharide, the naming of linkage is according to the number of the carbon at which the linkage begins and the carbon on the second monosaccharide at which the linkage ends. Reducing sugar: Sugars that contain aldehyde or a free ketone groups that are oxidized to carboxylic acids are classified as reducing sugars. So, the open chain form of sugars can reduce certain oxidizing agents (Tollens’, Fehling’s and Benedict’s) and become carboxylic acids. Anomeric position is carried by an – O H group for Hemiacetal sugars. Anomeric position is carried by an alkoxy group for acetal sugars. Hemiacetal sugars are in equilibrium with their open chain form. Acetal sugars are not in equilibrium with their open chain form.

Question

Want to see the full answer?

Answer 1

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 20, Problem 20.59AP

Interpretation Introduction

Interpretation:

The disaccharides formed by the α-1,4-glycosidic linkage of two D-mannose have to be drawn and compare the reducing property of this disaccharide with glyosidic products of problem 20.58.

Concept introduction:

Glycosidic linkage forms disaccharide by reaction of the –OH group on the anomeric carbon of one monosaccharide with an –OH group of a second monosaccharide, the naming of linkage is according to the number of the carbon at which the linkage begins and the carbon on the second monosaccharide at which the linkage ends.

Reducing sugar: Sugars that contain aldehyde or a free ketone groups that are oxidized to carboxylic acids are classified as reducing sugars. So, the open chain form of sugars can reduce certain oxidizing agents (Tollens’, Fehling’s and Benedict’s) and become carboxylic acids.

Anomeric position is carried by an –OH group for Hemiacetal sugars.

Anomeric position is carried by an alkoxy group for acetal sugars.

Hemiacetal sugars are in equilibrium with their open chain form.

Acetal sugars are not in equilibrium with their open chain form.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Why is sucrose a non-reducing sugar with Benedict’s solution while lactose is a reducing sugar under the same condition?

The following structure is sorbose Answer the following questions and briefly explain Draw β-D-sorbufuranose Draw β-D-sorbufuranosyl(2->1) β-D-glucopyranoside. Is this reducing sugar? What would be the probable function of this disaccharide, structural or storage?

The 6-member pyranose ring of glucose is formed through the interaction of the hydroxyl group on C5 with the aldehyde group What kind of ring is formed when the hydroxyl group on C4 attacks instead? Draw the Haworth projection of the products with all the carbons labelled accordingly and name them Why would ring formation through C6 or C3 be unfavorable?

Answer 2

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 20, Problem 20.59AP

Interpretation Introduction

Interpretation:

The disaccharides formed by the α-1,4-glycosidic linkage of two D-mannose have to be drawn and compare the reducing property of this disaccharide with glyosidic products of problem 20.58.

Concept introduction:

Glycosidic linkage forms disaccharide by reaction of the –OH group on the anomeric carbon of one monosaccharide with an –OH group of a second monosaccharide, the naming of linkage is according to the number of the carbon at which the linkage begins and the carbon on the second monosaccharide at which the linkage ends.

Reducing sugar: Sugars that contain aldehyde or a free ketone groups that are oxidized to carboxylic acids are classified as reducing sugars. So, the open chain form of sugars can reduce certain oxidizing agents (Tollens’, Fehling’s and Benedict’s) and become carboxylic acids.

Anomeric position is carried by an –OH group for Hemiacetal sugars.

Anomeric position is carried by an alkoxy group for acetal sugars.

Hemiacetal sugars are in equilibrium with their open chain form.

Acetal sugars are not in equilibrium with their open chain form.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 20, Problem 20.59AP

Interpretation Introduction

Interpretation:

The disaccharides formed by the α-1,4-glycosidic linkage of two D-mannose have to be drawn and compare the reducing property of this disaccharide with glyosidic products of problem 20.58.

Concept introduction:

Glycosidic linkage forms disaccharide by reaction of the –OH group on the anomeric carbon of one monosaccharide with an –OH group of a second monosaccharide, the naming of linkage is according to the number of the carbon at which the linkage begins and the carbon on the second monosaccharide at which the linkage ends.

Reducing sugar: Sugars that contain aldehyde or a free ketone groups that are oxidized to carboxylic acids are classified as reducing sugars. So, the open chain form of sugars can reduce certain oxidizing agents (Tollens’, Fehling’s and Benedict’s) and become carboxylic acids.

Anomeric position is carried by an –OH group for Hemiacetal sugars.

Anomeric position is carried by an alkoxy group for acetal sugars.

Hemiacetal sugars are in equilibrium with their open chain form.

Acetal sugars are not in equilibrium with their open chain form.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 20, Problem 20.59AP

Interpretation Introduction