Question

Draw a Fischer projection of the monosaccharide from which each of the following glycosides was prepared.

Short answer

a.

b.

Step-by-step solution

Fischer projection

Three-dimensional molecules are indicated as two-dimensional structures on a two-dimensional plane like paper. Isomers of several sugars are indicated as the Fischer projection in organic chemistry.

Glycosides

Glycosides constitute compounds generating one or several sugars on hydrolysis. The sugars linked to another functional group through a glycosidic bond is a glycoside.

Fischer projection of the monosaccharide from which the glycosides are prepared

a. Glycosides on hydrolysis produce the monosaccharide and the alcohol, which can be given as:

The conversion of the Haworth projection of beta-D-Glucose to the Fischer projection is:

b. The hydrolysis of compound b results in a monosaccharide and alcohol

The conversion of the Haworth projection to the Fischer projection can be given as: