Chapter 24, Problem 32P

Interpretation Introduction

Interpretation:

The number of chiral centers in the open chain form of $\text{D-apiose}$ is to be provided; whether on the reduction of $\text{D-apiose}$ forms optically active alditol or not is to be predicted; the number of chiral centers in the furanose forms of $\text{D-apiose}$ is to be provided and the possible stereoisomeric furanose of $\text{D-apiose}$ and their Haworth projection are to be predicted.

Concept Introduction:

The carbon atom which is bonded to four different groups is known as stereogenic or chiral center.

Sodium borohydride $\left({\text{NaBH}}_{\text{4}}\right)$ is a strong reducing agent. It provides ${\text{H}}^{-}$ as a source of nucleophile.

The structural representation of sugar molecule in cyclic form is known as Haworth projection. Sugar molecule that has six-membered-ring is known as pyranose and sugar molecule that has five-membered-ring is called furanose.