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Concept explainers
(a)
Interpretation: The configuration of the given disaccharide has to be specified.
Concept introduction: In a cyclic monosaccharide, the replacement of an
(b)
Interpretation: The configuration of the given disaccharide has to be specified.
Concept introduction: In a cyclic monosaccharide, the replacement of an
(c)
Interpretation: The configuration of the given disaccharide has to be specified.
Concept introduction: In a cyclic monosaccharide, the replacement of an
(d)
Interpretation: The configuration of the given disaccharide has to be specified.
Concept introduction: In a cyclic monosaccharide, the replacement of an
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Chapter 18 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- What is the complete name of the following sugar? но он носн он Write out the words alpha and beta. This question is case-sensitive. Capitalize only the configuration designation, D or L, example: beta-D-glucopyranose.arrow_forwardFollowing 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_forwardIdentify each of the following Haworth projection formulas as an a-D monosaccharide or a ß D-monosaccharide.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_forwardHistidine is an amino acid with three titratable groups: an -NH3+ group (pKa = 9.2), a -COOH group (pKa = 1.8), and an imidazole (amine-like) group (pKa = 6.0). The titration curve for histidine is shown below with four points highlighted. (a) Identify which point on the titration curve corresponds to the pKa for each of the titratable groups, and which point corresponds to the pI. Explain your choices. (b) Calculate the value of pI for histidinearrow_forwardTrehalose, also known as mycose, is a disaccharide found in certain mushrooms. It is composed of two a-D-glucose linked in a aa(1à1) glycosidic bond. Using Haworth projection, draw the structure of trehalose. Indicate whether it is reducing or non-reducing.arrow_forward
- Give one specific sample structure (Fischer Projection or Haworth) of the following carbohydrate derivatives: - Amino-sugararrow_forward1) Please list all glycosidic linkages between each monosaccharide units. For example, α(1→4)2) Please discuss whether these oligo/polysaccharides would be reducing or non-reducing sugar. Remember to state your reasoning in complete sentence.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 group of five-carbon sugars, all of which are aldopentoses. Identify the pairs that are enantiomers and the pairs that are epimers. (The sugars shown here are not all of the possible five-carbon sugars.) 1 СНО 2 СНО СНО Н-С—ОН Н-С—ОН Н—С—ОН Н-С—ОН НО —С—Н Н-С—ОН Н- С—ОН НО—С— Н НО—С—Н CH̟OH CH̟OH ČH̟OH в iоchemistry |61 STATE ATION Republic of the Philippines Romblon State University Romblan, Philippines 4 СНО 5 СНО 6 СНО НО—С—Н Н-С—ОН НО -С—Н Н—С—ОН НО -С—Н НО -С—Н H-C–OH Н-С—ОН НО—С—Н CH,OH ČH,OH CH,OHarrow_forwardDraw Haworth projection formulas for the b-anomer of monosaccharides with each of the following Fischer projection formulasarrow_forwardUsing the tree structures for the following monosaccharides and comparing to that for glucose, draw the structures of the following: A. tree (Fischer) structures of: D-mannose and L-mannose B. ring structures of alpha-D-mannose, beta-D-mannose, alpha-L-mannose, and beta-L-mannose Draw the ring (Haworth) structures as 6-membered pyranoses, being careful to show the positions of the hydroxyl groups above or below the plane of the ring.arrow_forward
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