Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained. Concept introduction: Enantiomers are the compounds that are non-superimposable mirror images of each other. Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers. Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH 2 OH group), the structure is called the α -form. If the –OH group points up, it’s called a β -form.

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Answer 1

Question

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

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Answer 2

Question

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

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Answer 3

Question

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

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Answer 4

Question

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

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Answer 5

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 6

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 7

Chapter 20, Problem 20.21UKC

(a)

Interpretation Introduction

Interpretation:

Whether the α-D-fructose and β-D-fructose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 8

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 9

(b)

Interpretation Introduction

Interpretation:

Whether the D-galactose and L-galactose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 10

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 11

(c)

Interpretation Introduction

Interpretation:

Whether the L-allose and D-glucose are diastereomers, enantiomers and/or anomers of each other has to be explained.

Concept introduction:

Enantiomers are the compounds that are non-superimposable mirror images of each other.

Diastereomers are stereoisomers which are neither mirror images nor identical. If two stereoisomers are not enantiomers, then they are Diastereomers.

Anomers are represented as α and β forms, if the conformation of the farthest right-hand carbon or anomeric carbon in the Haworth ring is such that the OH group points down (is on the opposite side of the ring from the –CH₂OH group), the structure is called the α-form. If the –OH group points up, it’s called a β-form.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 20.1 - Classify the following monosaccharides as an...Ch. 20.1 - Prob. 20.2P Ch. 20.2 - Prob. 20.3P Ch. 20.2 - Prob. 20.4P Ch. 20.2 - Prob. 20.6P Ch. 20.3 - D-Talose, a constituent of certain antibiotics,...Ch. 20.3 - Prob. 20.8P Ch. 20.3 - Draw the structure that completes the mutarotation...Ch. 20.4 - Prob. 20.10KCP Ch. 20.4 - Prob. 20.11P

Solution Summary: The author explains that enantiomers are non-superimposable mirror images of each other, and stereoisomer are neither identical nor mirror-like.

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