The most stable conformation of the β-pyranose form of each of the given sugars is to be drawn. Concept introduction: A pyranose is a six-membered ring form of a monosaccharide. The Haworth formula is a representation of carbohydrate in a cyclic form where the substituents point up or down on the ring. The Fischer projection is converted to Haworth formula by formation of a six-membered hemiacetal between the aldehyde group and the C-5 hydroxyl group. The substituents present on the right side in Fischer projection will be drawn on the lower face in Haworth formula. The substituents present on the left side of the vertical line in Fischer projection will be drawn on the upper face in a Haworth formula. The substituent (alkyl) at equatorial position in chair form is the most stable conformation.

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Answer 1

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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 24.7, Problem 7P

Interpretation Introduction

Interpretation:

The most stable conformation of the $β-pyranose$ form of each of the given sugars is to be drawn.

Concept introduction:

A pyranose is a six-membered ring form of a monosaccharide.

The Haworth formula is a representation of carbohydrate in a cyclic form where the substituents point up or down on the ring.

The Fischer projection is converted to Haworth formula by formation of a six-membered hemiacetal between the aldehyde group and the $C-5$ hydroxyl group.

The substituents present on the right side in Fischer projection will be drawn on the lower face in Haworth formula. The substituents present on the left side of the vertical line in Fischer projection will be drawn on the upper face in a Haworth formula.

The substituent (alkyl) at equatorial position in chair form is the most stable conformation.

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Answer 2

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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 24.7, Problem 7P

Interpretation Introduction

Interpretation:

The most stable conformation of the $β-pyranose$ form of each of the given sugars is to be drawn.

Concept introduction:

A pyranose is a six-membered ring form of a monosaccharide.

The Haworth formula is a representation of carbohydrate in a cyclic form where the substituents point up or down on the ring.

The Fischer projection is converted to Haworth formula by formation of a six-membered hemiacetal between the aldehyde group and the $C-5$ hydroxyl group.

The substituents present on the right side in Fischer projection will be drawn on the lower face in Haworth formula. The substituents present on the left side of the vertical line in Fischer projection will be drawn on the upper face in a Haworth formula.

The substituent (alkyl) at equatorial position in chair form is the most stable conformation.

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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 24.7, Problem 7P

Interpretation Introduction

Interpretation:

The most stable conformation of the $β-pyranose$ form of each of the given sugars is to be drawn.

Concept introduction:

A pyranose is a six-membered ring form of a monosaccharide.

The Haworth formula is a representation of carbohydrate in a cyclic form where the substituents point up or down on the ring.

The Fischer projection is converted to Haworth formula by formation of a six-membered hemiacetal between the aldehyde group and the $C-5$ hydroxyl group.

The substituents present on the right side in Fischer projection will be drawn on the lower face in Haworth formula. The substituents present on the left side of the vertical line in Fischer projection will be drawn on the upper face in a Haworth formula.

The substituent (alkyl) at equatorial position in chair form is the most stable conformation.

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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 24.7, Problem 7P

Interpretation Introduction