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Chapter 13: Q. 13.25 (page 446)

Draw the Fischer projections for D-glucose and L-glucose.

Short Answer

Expert verified

The Fischer projections for D-glucose and L-glucose are shown below.

Step by step solution

01

Fischer projection

  • Fischer projection, a method of representing the third-dimensional structures of molecules on a page, was devised in the manner of Emil Fischer.
  • By convention, horizontal traces constitute bonds projecting from the aircraft of the paper towards the viewer, and vertical traces constitute bonds projecting far from the viewer.
02

Enantiomers

  • As we recognize D and L Glucose are enantiomers this means that they may be replicate snapshots of every other.
  • D-Glucose is an aldohexose, this means that it has six carbons and an aldehyde organization, and the penultimate hydroxy organization at the proper side.
03

Fischer projection of D-glucose and L-glucose

  • In this problem, we have to draw the Fischer projection for the given D-glucose and L-glucose.
  • Knowing the shape of D-Glucose we are able to simply alternate each stereogenic middle to get the reflected image, that's L-Glucose, as proven withinside the Figure below.

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Most popular questions from this chapter

What are the differences in the Fischer projections of D-fructose and D-galactose? (13.3)

The disaccharide trehalose found in mushrooms is composed of two α-D-glucose molecules joined by an α(1→1)-glycosidic bond. Draw the Haworth structure for trehalose. (13.4,13.6)

Identify the disaccharide that fits each of the following descriptions:

a. ordinary table sugar

b. found in milk and milk products

c. also called malt sugar

d. hydrolysis gives galactose and glucose

Kate's blood volume is 3.9L. After three months of diet and exercise, if her blood glucose is 146mg/dL, how many grams of glucose are in her blood?
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