Chapter 24, Problem 24.19P

Interpretation Introduction

(a)

Interpretation:

A sequence of reactions used in the conversion of $\text{D}-\text{galactopyranose}$ to ethyl $2,3,4,6-\text{tetra}-O-\text{methyl}-\text{D}-\text{galactopyranoside}$ is to be stated

Concept introduction:

Carbohydrates are a class of organic compounds. They can be present in the form of open chains or ringsThey are usually an aldehyde or ketone with additional hydroxyl groups. They have the general molecular formula, ${\left({\text{CH}}_{\text{2}}\text{O}\right)}_{\text{n}}$.

The six-membered ring form of carbohydrates is termed as pyranose. The five-membered ring form of carbohydrates is termed as furanose.

The pyranoses can be classified as $\alpha$ or $\beta$ based upon the configuration at the anomeric carbon. The anomeric carbon is the one which was a part of the carbonyl group in the straight-chain structure of the carbohydrate.

Interpretation Introduction

(b)

Interpretation:

A sequence of reactions used in the conversion of D-glucopyranose to $2,3,4,6-\text{tetra}-O-\text{benzyl}-\text{D}-\text{glucopyranose}$ is to be stated

Concept introduction:

Carbohydrates are a class of organic compounds. They can be present in the form of open chains or rings.

They are usually an aldehyde or ketone with additional hydroxyl groups. They have the general molecular formula, ${\left({\text{CH}}_{\text{2}}\text{O}\right)}_{\text{n}}$.

The 6 membered ring form of carbohydrates is termed as pyranose. This ring contains 5 carbon atoms and 1 an oxygen atom.

The pyranoses can be classified as $\alpha$ or $\beta$ based upon the configuration at the anomeric carbon. The anomeric carbon is the one which was a part of the carbonyl group in the straight-chain structure of the carbohydrate.