(a) Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn. Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

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Answer 1

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Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

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Consider alanine a. How many chiral centers? b. How many stereoisomers? c. Draw the fischer projection for each stereoisomer and determine the absolute configuration for each chiral center.

Threonine is a naturally occurring amino acid that has two stereogenic centers.a. Draw the four possible stereoisomers using wedges and dashed wedges.b. The naturally occurring amino acid has the 2S,3R configuration at its two stereogenic centers. Which structure does this correspond to?

a. Classify this monosaccharide (e.g., aldotriose)b. Does it have the D or L configuration? c. Which carbon and oxygen become bonded in the furanose ring form of this monosaccharide (e.g., C2O6, where O6 means the oxygen on carbon 6, or "not formed")? d. Which carbon and oxygen become bonded in the pyranose ring form of this monosaccharide e.g., C2O6 or "not formed"?

Answer 2

Question

Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

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Answer 3

Question

Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

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Answer 4

Question

Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

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Answer 5

Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

Answer 6

Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Answer 7

Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation: The four possible stereoisomers of threonine by using wedges and dashes are to be drawn.

Concept introduction: Isomers are the compounds with similar formula and different structures. Stereoisomers are a type of isomers in which arrangement of atoms differ in space. Or the compounds that have same molecular formula but they differ in the arrangement of atoms or groups in the space are known as stereoisomers.

Answer 8

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

Answer 9

Interpretation Introduction

(b)

Interpretation: The structure which corresponds to an amino acid with 2S,3R configuration at its two stereogenic centers is to be predicted.

Concept introduction: The stereochemistry of the compound is determined by prioritizing the groups attached to its stereogenic center. The groups are prioritized on the basis of atomic number of their atoms. The group that contain atom with higher atomic number is given higher priority. Complete the circle in decreasing order of priority from 1→2→3. The configuration of the compound is R and S when circle rotates in clockwise and anticlockwise direction.

Answer 10

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Answer 11

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Answer 12

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Answer 13

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Solution Summary: The author illustrates the four possible stereoisomers of threonine by using wedges and dashes.

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