Chapter 23.10, Problem 23.30P

Interpretation Introduction

Interpretation: The structure of $\text{D}-\text{lyxose}$ and $\text{D}-\text{threose}$ is to be drawn.

Concept introduction: Ruff degradation is a method which is used to shorten sugar chain. It is a two step process which starts with a bromine-water oxidation of the aldose to its aldonic acid. Then in the second step treatment of aldonic acid with hydrogen peroxide and ferric sulfate oxidizes the carbonyl group to ${\text{CO}}_{\text{2}}$ and give aldose with one fewer carbon atom.

To draw: The structure of $\text{D}-\text{lyxose}$ and $\text{D}-\text{threose}$.