Chapter 18.1, Problem 7PP

(a)

Interpretation Introduction

Interpretation:

To determine the given Haworth structure as the a or the ß form.

Concept Introduction :

D- Fructose is a monosaccharide with the chemical formula C₆H₁₂O₆. A Haworth structure is a common way to write the structural formula of a given monosaccharide in the cyclic form with a simple 3-D perspective. The beta position in case of D-Fructose refers to the projection of -OH group on the same side on carbon number 6. This further results in upwards projection of hydroxyl group present on carbon number 2. Alpha configuration, on the other hand can be observed when there is downward projection of hydroxyl group on carbon number 2.

(b)

Interpretation Introduction

Interpretation:

To determine the given Haworth structure as the a or the ß form.

Concept Introduction :

D- Glucose is a monosaccharide with the chemical formula C₆H₁₂O₆. A Haworth structure is a common way to write the structural formula of a given monosaccharide in the cyclic form with a simple 3-D perspective. The beta position in case of D-glucose refers to the projection of -OH group on carbon no.1 above the plane of the ring Alpha configuration, on the other hand can be observed when there is downward projection of hydroxyl group on carbon No. 1.