The acetal or hemiacetal grouping of trehalose, reducing or nonreducing property of trehalose and the link between two monosaccharides have to be determined. Concept introduction: 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 a – 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. The linkage between monosaccharides in a disaccharide is referred to as a glycosidic linkage. Two α-D-glucose are connected to form Trehalose by the α-1,1 glycosidic linkage .

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Answer 1

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 20.69AP

Interpretation Introduction

Interpretation:

The acetal or hemiacetal grouping of trehalose, reducing or nonreducing property of trehalose and the link between two monosaccharides have to be determined.

Concept introduction:

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 a –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.

The linkage between monosaccharides in a disaccharide is referred to as a glycosidic linkage. Two α-D-glucose are connected to form Trehalose by the α-1,1 glycosidic linkage.

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Does gentiobiose (Problem 20.66) have an acetal grouping? A hemiacetal grouping? Do you expect gentiobiose to be a reducing or nonreducing sugar? How would you classify the linkage (x or β and carbon numbers) between the two monosaccharides?

92.4

D- and L- designations are used to distinguish between the two possible enantiomers of the monosaccharide, galactose. From the Fischer projection, determine the designation of this monosaccharide.

Answer 2

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 20.69AP

Interpretation Introduction

Interpretation:

The acetal or hemiacetal grouping of trehalose, reducing or nonreducing property of trehalose and the link between two monosaccharides have to be determined.

Concept introduction:

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 a –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.

The linkage between monosaccharides in a disaccharide is referred to as a glycosidic linkage. Two α-D-glucose are connected to form Trehalose by the α-1,1 glycosidic linkage.

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Check out a sample textbook solution

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Answer 3

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 20.69AP

Interpretation Introduction

Interpretation:

The acetal or hemiacetal grouping of trehalose, reducing or nonreducing property of trehalose and the link between two monosaccharides have to be determined.

Concept introduction:

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 a –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.

The linkage between monosaccharides in a disaccharide is referred to as a glycosidic linkage. Two α-D-glucose are connected to form Trehalose by the α-1,1 glycosidic linkage.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

Chapter 20, Problem 20.69AP

Interpretation Introduction