Chapter 28, Problem 28.75P

Interpretation Introduction

(a)

Interpretation: The structure of polysaccharide formed by joining D-glucosamine in $1\to 6$-$\text{α}$-glycosidic linkage is to be drawn.

Concept introduction: Monosaccharides are the small units of simple sugars. Disaccharides are formed by two units of monosaccharides. Polysaccharides are made up of small units of monosaccharides. These small units are joined together by glycoside linkage.

Interpretation Introduction

(b)

Interpretation: The structure of disaccharide formed by joining D-mannose and D-glucose in $1\to 4$-$\text{β}$-glycosidic linkage using mannose’s anomeric carbon is to be drawn.

Concept introduction: Monosaccharides are the small units of simple sugars. Disaccharides are formed by two units of monosaccharides. Polysaccharides are made up of small units of monosaccharides. These small units are joined together by glycoside linkage.

Interpretation Introduction

(c)

Interpretation: The structure of an Α-$N$-glycoside formed from D-arabinose and ${\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{CH}}_{\text{2}}{\text{NH}}_{\text{2}}$ is to be drawn.

Concept introduction: Monosaccharide is the simplest form of carbohydrate. It possesses either ketone or aldehyde with one or more than one hydroxyl $\left(\text{OH}\right)$ groups. Disaccharides, trisaccharides, oligosaccharides, and polysaccharides all involve monosaccharide as subunits.

Interpretation Introduction

(d)

Interpretation: The structure of ribonucleoside formed from D-ribose and thymine is to be drawn.

Concept introduction: Monosaccharide is the simplest form of carbohydrate. It possesses either ketone or aldehyde with one or more than one hydroxyl $\left(\text{OH}\right)$ groups. Disaccharides, trisaccharides, oligosaccharides, and polysaccharides all involve monosaccharide as subunits.