The Fischer Projections of all 2-ketopentoses has to be drawn and among that D-2-ketopentoses, L-2-ketopentoses and enantiomers has to be identified. Concept Introduction: The two dimensional representations of Carbohydrates is known as Fischer Projections. The Ketopentoses contain the formula C 5 H 10 O 5 . The 2-ketopentose contain ketone group at the second carbon. D-ketopentose: The penultimate carbon contains − OH on right side of the structure. The D stands for Dextrorotatory. L-ketopentose: The penultimate carbon contains − OH on left side of the structure. The L stands for Levorotatory. Enantiomers: The stereoisomers which are mirror images and are non-superimposable are known as enantiomers.

Question

Classify the structures as being either an enantiomer, diastereomer or diastereomer/epimer of D-glucose. Structure A: CH H- -OH Structure B: но- H- H- OH Structure C: H- он H- -H D-Glucose: OH || CH CH CH он H- он но -H H- он но он но но- H- но H- OH OH но -- H- -H H -Ç-H Structure A: OH Structure B: OH Structure C: OH

Answer 1

Question

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 25.1, Problem 25.1P

Interpretation Introduction

Interpretation:

The Fischer Projections of all 2-ketopentoses has to be drawn and among that D-2-ketopentoses, L-2-ketopentoses and enantiomers has to be identified.

Concept Introduction:

The two dimensional representations of Carbohydrates is known as Fischer Projections.

The Ketopentoses contain the formula C5H10O5.

The 2-ketopentose contain ketone group at the second carbon.

D-ketopentose: The penultimate carbon contains −OH on right side of the structure. The D stands for Dextrorotatory.

L-ketopentose: The penultimate carbon contains −OH on left side of the structure. The L stands for Levorotatory.

Enantiomers: The stereoisomers which are mirror images and are non-superimposable are known as enantiomers.

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Classify the structures as being either an enantiomer, diastereomer or diastereomer/epimer of D-glucose. Structure A: CH H- -OH Structure B: но- H- H- OH Structure C: H- он H- -H D-Glucose: OH || CH CH CH он H- он но -H H- он но он но но- H- но H- OH OH но -- H- -H H -Ç-H Structure A: OH Structure B: OH Structure C: OH

The structure of 4 isomers of ketopentose are shown. 1) select every structure that is a diastereomer of structure D A, B, or C? 2) select every structure that is a enantiomer of structure C A, B, or D 3) select every structure that is a stereoisomer of structure C A, B, or D

Draw Fischer projections for all 2-ketopentoses. Which are d-2-ketopentoses, which are l-2-ketopentoses, and which are enantiomers?

Answer 2

Question

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 25.1, Problem 25.1P

Interpretation Introduction

Interpretation:

The Fischer Projections of all 2-ketopentoses has to be drawn and among that D-2-ketopentoses, L-2-ketopentoses and enantiomers has to be identified.

Concept Introduction:

The two dimensional representations of Carbohydrates is known as Fischer Projections.

The Ketopentoses contain the formula C5H10O5.

The 2-ketopentose contain ketone group at the second carbon.

D-ketopentose: The penultimate carbon contains −OH on right side of the structure. The D stands for Dextrorotatory.

L-ketopentose: The penultimate carbon contains −OH on left side of the structure. The L stands for Levorotatory.

Enantiomers: The stereoisomers which are mirror images and are non-superimposable are known as enantiomers.

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Answer 3

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Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 25.1, Problem 25.1P

Interpretation Introduction

Interpretation:

The Fischer Projections of all 2-ketopentoses has to be drawn and among that D-2-ketopentoses, L-2-ketopentoses and enantiomers has to be identified.

Concept Introduction:

The two dimensional representations of Carbohydrates is known as Fischer Projections.

The Ketopentoses contain the formula C5H10O5.

The 2-ketopentose contain ketone group at the second carbon.

D-ketopentose: The penultimate carbon contains −OH on right side of the structure. The D stands for Dextrorotatory.

L-ketopentose: The penultimate carbon contains −OH on left side of the structure. The L stands for Levorotatory.

Enantiomers: The stereoisomers which are mirror images and are non-superimposable are known as enantiomers.

Expert Solution & Answer

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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 ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 25.1, Problem 25.1P

Interpretation Introduction