Concept explainers
a)
Interpretation:
The configuration of each of the asymmetric centers in the Fisher projection of D-glucose is to be stated.
Concept Introduction:
An asymmetric carbon atom is represented as a cross in Fisher projection. The carbon chain is kept along the vertical line. The groups attached asymmetric carbon atoms are arranged according to their configuration in Fisher projection. The enantiomers of a chiral compound can be named the help of right hand and left hand configuration.
In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) or (S) to (R).
b)
Interpretation:
The configuration of each of the asymmetric centers in the Fisher projection of D-galactose is to be stated.
Concept Introduction:
An asymmetric carbon atom is represented as a cross in Fisher projection. The carbon chain is kept along the vertical line. The groups attached asymmetric carbon atoms are arranged according to their configuration in Fisher projection. The enantiomers of a chiral compound can be named the help of right hand and left hand configuration.
In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) or (S) to (R).
c)
Interpretation:
The configuration of each of the asymmetric centers in the Fisher projection of D-ribose is to be stated.
Concept Introduction:
An asymmetric carbon atom is represented as a cross in Fisher projection. The carbon chain is kept along the vertical line. The groups attached asymmetric carbon atoms are arranged according to their configuration in Fisher projection. The enantiomers of a chiral compound can be named the help of right hand and left hand configuration.
In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) or (S) to (R).
d)
Interpretation:
The configuration of each of the asymmetric centers in the Fisher projection of D-xylose is to be stated.
Concept Introduction:
An asymmetric carbon atom is represented as a cross in Fisher projection. The carbon chain is kept along the vertical line. The groups attached asymmetric carbon atoms are arranged according to their configuration in Fisher projection. The enantiomers of a chiral compound can be named the help of right hand and left hand configuration.
In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) or (S) to (R).
e)
Interpretation:
The configuration of each of the asymmetric centers in the Fisher projection of D-sorbose is to be stated.
Concept Introduction:
An asymmetric carbon atom is represented as a cross in Fisher projection. The carbon chain is kept along the vertical line. The groups attached asymmetric carbon atoms are arranged according to their configuration in Fisher projection. The enantiomers of a chiral compound can be named the help of right hand and left hand configuration.
In fisher projection, chiral carbon atom is represented by a cross. When two groups on a fisher projection are interchanged, the configuration of chiral carbon also changes from (R) to (S) or (S) to (R).
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Chapter 20 Solutions
Organic Chemistry (8th Edition)
- Draw a Fischer Projection formula for the enantiomer of each of the following monosaccharides.arrow_forwardm) Which pyranose ring (A, B, C, or D) in the tetrasaccharide below is derived from D-altrose? The Fischer projections for the four aldohexoses that make up this tetrasaccharide are shown below. B C D HOH CHO CHO CHO CHO HO+H HTOH Fонно н HOH HOH H-OH H-OH H-+-OH H-TOHHOH HOH H+OH HOHнтон нон CHOH CHOH CHOH CHOH De D-glue Dalose Datrone i NH Į HOH STEP 1 OH, HO- answer 1. Just add arrows and charges for steps 1, 2, and 3 in formation of this enamine з no arrows needed here OH н Н ЮН -OH STEP 3 :ÖH н H STEP 2 на это про за почarrow_forwardASELS A Fischer projection of a monosaccharide is shown below: CHO HO- H H- H -OH -OH CH₂OH Classify this monosaccharide (e.g., aldotriose) E Does it have the D or L configuration?arrow_forward
- Draw a diastereomers of D- Glucosearrow_forward1. Draw the Fischer projections for D-galactose and D-fructose. Identify all functional groups in each structure. 2. Draw the Haworth projections for a. B-D-galactose b. a-D-glucosearrow_forwardD-Fructose is the sweetest monosaccharide. How does the Fischer projection of D-Frutose differ from that of D-glucose?arrow_forward
- Be sure to answer all parts. The Fischer projection of D-glucose is shown below. Draw its mirror image as a Fischer projection. CHO OH HO H. draw structure... H. OH H. OH CH,OHarrow_forwardDraw Haworth projection formulas for the a-anomer of monosaccharides with each of the following Fischer projection formulas. a. CHO HOH H- HO- H -ОН -Η OH CH₂OH b. CHO H -OH H -ОН HO H CH₂OHarrow_forwardA Fischer projection of a monosaccharide is shown below: CH2OH C=O H- = 2 HO- HO -OH H H CH₂OH Classify this monosaccharide (e.g., aldotriose) Does it have the D or L configuration?arrow_forward
- 1. Which of the following is not true to the monosaccharide below? H. ОН но- -H- но ОН ĆH2OH O It is the Fischer Projection of D-glucose. It is an aldohexose having 4 chiral centers and 24 stereoisomers. It is has a D-glucose because OH- group bonded to the highest numbered chiral C is pointing to the right. It is a polyhydroxy ketone having 8 enantiomeric pair.arrow_forwardDraw a monosaccharide described in the following statements: 1. A diastereomer of D-fructose in the D- configuration. 2. A C-3 epimer of D- glucose. 3. A C-3 epimer of D- fructose.arrow_forward1arrow_forward
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