Chapter 4, Problem 4.57P

Interpretation Introduction

Interpretation:

The number of constitutional isomers of acyclic monosaccharides that can be classified as aldohexoses is to be determined. The number of constitutional isomers that can be classified as ketohexoses is to be determined.

Concept introduction:

Constitutional isomers are two or more molecules with the same chemical formula but different connectivity of the atoms or groups of atoms.

An acyclic aldohexose is an open chain six carbon monosaccharide (chemical formula ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$), and contains an aldehyde functional group on carbon #1. An acyclic ketohexose is a six carbon monosaccharide (chemical formula ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$), and contains a ketone functional group on carbon #2.