Chapter 28, Problem 28.10P

Interpretation Introduction

(a)

Interpretation: The enantiomer of D-fructose is to be drawn.

Concept introduction: A sugar molecule in which hydroxyl group of second last carbon atom is on the left and right side of the horizontal line is known as $\text{L}$-sugar and $\text{D}$-sugar, respectively. Two compounds which are non-superimposable mirror images of each other are known as enantiomers.

Interpretation Introduction

(b)

Interpretation: An epimer of D-fructose at $\text{C4}$ is to be drawn and the name of this compound is to be stated.

Concept introduction: Two compounds which are neither superimposable nor mirror images to each other and the configuration of one of their stereogenic centers is different are known as epimers.

Interpretation Introduction

(c)

Interpretation: An epimer of D-fructose at $\text{C5}$ is to be drawn and the name of this compound is to be stated.

Concept introduction: Two compounds which are neither superimposable nor mirror images to each other and the configuration of one of their stereogenic centers is different are known as epimers.