Whether each of the given structures is D -glyceraldehyde or L -glyceraldehyde is to be stated. Concept Introduction: The configurations of carbohydrates are described by the notations “ D ” and “ L ”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one. Almost all the sugars found in nature are D -sugars. The mirror image of D -sugar is L -sugar. The notations “ D ” and “ L ” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D -sugar. If that same “OH” group is on the left, then the compound is an L -sugar.

Question

Want to see the full answer?

Answer 1

Question

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

(a) Draw a skeletal structure of the anabolic steroid 4-androstene-3,17-dione, also called "andro," from the following description. Andro contains the tetracyclic steroid skeieton with carbonyl groups at C3 and C17, a double bond between C4 and C5, and methyl groups bonded to C10 and C13. (b) Add wedges and dashes for all stereogenic centers with the following information: the configuration at C10 is R, the configuration at C13 is S, and all substituents at ring fusions are trans to each other.

1. Some marine plankton contain triacylglycerols formed from the polyunsaturated fatty acid (PUFA) such as: CH3CH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CHCH2CH=CHCH2COOH a) Draw the skeletal structure of the given PUFA showing the preffered stereogenic arrangement for a naturally-occuring lipid at each double bond. b) Write the systematic name of the fatty acid. c) What type of omega-n acid is this fatty acid? d) Would you expect this fatty acid to be a soild or liquid at room temperature?

Draw structures corresponding to the following IUPAC names: (d) 4-Ethyl-2-propyloctanoic acid (e) 2-Cyclobutenecarbonitrile

Answer 2

Question

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 6

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 7

Chapter 20.2, Problem 3P

a)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically.

All the carbon atoms of the chain are represented by the center of the crossing line. The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 8

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 9

b)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 10

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 11

c)

Interpretation Introduction

Interpretation:

Whether each of the given structures is D-glyceraldehyde or L-glyceraldehyde is to be stated.

Concept Introduction:

The configurations of carbohydrates are described by the notations “D” and “L”. In Fischer projection carbon chain is depicted vertically. All the carbon atoms of the chain are represented by the center of the crossing line.

The functional group like ketone group has the lowest possible priority two and the aldehydic group has the lowest priority one.

Almost all the sugars found in nature are D-sugars. The mirror image of D-sugar is L-sugar.

The notations “D” and “L” are based on the presence of “OH” group. If the “OH” group attached to the bottommost asymmetric center of a Fischer projection, is on the right then the compound is a D-sugar. If that same “OH” group is on the left, then the compound is an L-sugar.

Answer 12

Expert Solution & Answer

Answer 13

Expert Solution & Answer

Answer 14

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 15

Ch. 20.1 - Prob. 1P Ch. 20.2 - Prob. 2P Ch. 20.2 - Prob. 3P Ch. 20.3 - Prob. 4P Ch. 20.3 - Prob. 5P Ch. 20.3 - Prob. 6P Ch. 20.4 - Prob. 7P Ch. 20.4 - Prob. 8P Ch. 20.5 - Prob. 9P Ch. 20.5 - Prob. 10P

Solution Summary: The author explains the structure of glyceraldehyde in Fischer projection. The carbonyl group is placed on top in case of aldose and on as close to the top as possible.

Concept explainers

Want to see the full answer?

Chapter 20 Solutions