Chapter 26.1, Problem 3P

Interpretation Introduction

a)

Interpretation:

The structure of threonine is to be elucidated using normal wedged and dashed line and the presence of two α-carbons in this amino acid gives it two chirality centers.

Concept introduction:

(2S,3R)-2-amino-3-hydroxybutanoic acid or threonine is an amino acid with two α-carbons and hence it has two chiral centers. According to the Fisher projections, the amino acid molecules may be represented using normal, wedged, and dashed lines.

To determine:

The structure of L-threonine using normal, wedged and dashed lines.

Interpretation Introduction

b)

Interpretation:

The structure of threonine is to be elucidated using normal wedged and dashed line and the presence of two α-carbons in this amino acid gives it two chirality centers.

Concept introduction:

(2S,3R)-2-amino-3-hydroxybutanoic acid or threonine is an amino acid with two α-carbons and hence it has two chiral centers. According to the Fisher projections, the amino acid molecules may be represented using normal, wedged, and dashed lines.

To determine:

Two possible diastereomers of L-threonine.