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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

Identify each of the following structures as chiral or achiral. If chiral, indicate the chiral carbon.

Draw the Fischer projection for the oxidation and the reduction products of D-arabinose. What are the names of the sugar acid and the sugar alcohol produced?

Isomaltose, obtained from the breakdown of starch, has the following Haworth structure;

a. Is isomaltose a mono-d- or polysaccharide?

b. What are the monosaccharides in isomaltose?

c. What is the glycosidic link in isomaltose?

d. Is this the伪 or 尾 isomer of isomaltose?

e. Is isomaltose a reducing sugar?

Draw the Fischer projection for the other enantiomer of a to d in problem 13.21.

Draw the fischer projection for the oxidation and the reduction products of D-xylose. what are the names of sugar acid and the sugar alcohol produced?
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