Concept explainers
(a)
Interpretation: The
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. A compound in which the hydroxyl group of first and sixth carbon atom is on the same side is known as
(b)
Interpretation: The
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. A compound in which the hydroxyl group of first and sixth carbon atom is on the same side is known as
(c)
Interpretation: The
Concept introduction: The structural representation of sugar molecule in cyclic form is known as Haworth projection. A compound in which the hydroxyl group of first and sixth carbon atom is on the same side is known as
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LL ORG CHEM
- Convert each aldohexose to the indicated anomer using a Haworth projection.arrow_forwardAnswer the following questions about monosaccharide B.a. Draw the β anomer of B in a Haworth projection.b. Draw the α anomer of B in a three-dimensional representation using a chair conformation.c. What products are formed when B undergoes the Kiliani–Fischer synthesis?d. What product is formed when B is treated with NaBH4 in CH3OH?e. Draw the disaccharide formed when two molecules of B are joined by a 1→4-β-glycosidic linkage.arrow_forwardDraw both pyranose anomers of each aldohexose using a three-dimensional representation with a chair pyranose. Label each anomer as α or β.arrow_forward
- Draw the products formed when B-D-galactose is treated with each reagent. a. Ag,0 + CH3I b. NaH + CgHsCH2CI c. The product in (b), then H30* d. Ac20 + pyridine e. CeHsCOCI + pyridine f. The product in (c), then CgHsCOCI + pyridinearrow_forwardВ. 1. Draw the Fischer, Haworth & chair (where applicable) representations of the given monosaccharides. Sugar Fischer Haworth Chair a CHO но H- H но OH ČH2OH D-idose (а-anomer) CH2OH FOH H- ČH2OH a ketopentose (B-anomer) b.arrow_forward(a) Convert each cyclic monosaccharide into a Fischer projection of its acyclic form. (b) Name each monosaccharide. (c) Label the anomer as a or ß.arrow_forward
- What products are obtained from the reduction of a. d-idose? b. d-sorbose?arrow_forwarda) Draw Haworth projections of both - and -anomers of D-fructose. Indicate which carbon is the anomeric carbon.b) Sucrose is a disaccharide made up of a molecule of D-fructose and D-glucose. Draw the structure of sucrose clearly indicating the linkage between the two monosaccharides and its biological significance.c) Tollen’s reagent is a very mild oxidizing agent which normally oxidize aldehydes but not ketones. However, both glucose and fructose give positive results with Tollen’s reagent and are classified as reducing sugars. Explain how fructose can also give positive results with Tollen’s reagent (illustrate using structures).arrow_forwarda. Draw the enantiomer of D-fructose.b. Draw an epimer of D-fructose at C4. What is the name of this compound?c. Draw an epimer of D-fructose at C5. What is the name of this compound?arrow_forward
- For D-lyxose i. Draw an epimer at C3. ii. Draw a diastereomer that is not an epimer. iii. Draw the anomers of -D-lyxofuranose and -D-lyxopyranose. iv. Draw the product as Haworth projection when reacted with methanol catalysed by acid.arrow_forwardAnswer the following questions about the eight aldopentoses: a. Which are enantiomers? b. Which are C-2 epimers? c. Which form an optically active compound when oxidized with nitric acid?arrow_forward5-Deoxyglucose will close to a?arrow_forward
- Chemistry for Today: General, Organic, and Bioche...ChemistryISBN:9781305960060Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. HansenPublisher:Cengage LearningIntroduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning