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Concept explainers
(a)
Interpretation: The classification of the given galactose derivatives, as a sugar alcohol or an acidic sugar has to be predicted.
Concept introduction: Acidic sugars are the sugars in which carbonyl group or the alcoholic group is oxidised into
(b)
Interpretation: The classification of the given galactose derivatives, as a sugar alcohol or an acidic sugar has to be predicted.
Concept introduction: Acidic sugars are the sugars in which carbonyl group or the alcoholic group is oxidised into carboxylic acid, whereas sugar alcohol is the sugar in which the aldehyde group is reduced to the alcohol. Example of acidic sugar is gluconic acid and that of sugar alcohol is mannitol.
(c)
Interpretation: The classification of the given galactose derivatives, as a sugar alcohol or an acidic sugar has to be predicted.
Concept introduction: Acidic sugars are the sugars in which carbonyl group or the alcoholic group is oxidised into carboxylic acid, whereas sugar alcohol is the sugar in which the aldehyde group is reduced to the alcohol. Example of acidic sugar is gluconic acid and that of sugar alcohol is mannitol.
(d)
Interpretation: The classification of the given galactose derivatives, as a sugar alcohol or an acidic sugar has to be predicted.
Concept introduction: Acidic sugars are the sugars in which carbonyl group or the alcoholic group is oxidised into carboxylic acid, whereas sugar alcohol is the sugar in which the aldehyde group is reduced to the alcohol. Example of acidic sugar is gluconic acid and that of sugar alcohol is mannitol.
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Chapter 18 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Following are Fischer projection for a group of five carbon sugars,all of which are aldopentoses. Identify the pairs that are enantiomers and the pairs that are epimers.(The sugar shown herebare not all of the possible five carbon sugars.)arrow_forwardDoes trehalose (Problem 20.68) have an acetal grouping? A hemiacetal grouping? Do you expect trehalose to be a reducing or nonreducing sugar? Classify the linkage between the two monosaccharides.arrow_forwardDoes gentiobiose (Problem 20.66) have an acetal grouping? A hemiacetal grouping? Do you expect gentiobiose to be a reducing or nonreducing sugar? How would you classify the linkage (x or β and carbon numbers) between the two monosaccharides?arrow_forward
- Following are Fischer projections for a groupof five-carbon sugars, all of which are aldopentoses. Identify thepairs that are enantiomers and the pairs that are epimers. (Thesugars shown here are not all of the possible five-carbon sugars.)arrow_forwardComplete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D- Xylosearrow_forwardIf thymine nucleotides are degraded by the same enzymes as those catabolizing uridine nucleotides, give the structure of the thymine metabolite that corresponds to B-ureidopropionate.arrow_forward
- What is the pyranose/furanose ring structure of this sugar?arrow_forwardGive one specific sample structure (Fischer Projection or Haworth) of the following carbohydrate derivatives: - Amino-sugararrow_forwardComplete the following table by providing the Fischer and Haworth Projections of the given sugars. (Please be careful with the alpha and beta, and the complete and abbreviated) (not a graded question) Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructosearrow_forward
- Complete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D-Mannose D-Xylose L-Lyxosearrow_forwardWhich form of aspartic acid in Problem 18.54 is the zwitterion? What is the pI for the zwitterion?arrow_forwardComplete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer D-Mannose D-Xylose L-Lyxosearrow_forward
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