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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ORGANIC CHEMISTRY (LOOSELEAF)
- Draw 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_forwardConvert each aldohexose to the indicated anomer using a Haworth projection.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 β-D-galactose is treated with each reagent. a. Ag2O + CH3I b. NaH + C6H5CH2Cl c. The product in (b), then H3O+ d. Ac2O + pyridine e. C6H5COCl + pyridine f. The product in (c), then C6H5COCl + 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_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_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_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_forwardWhat products are obtained from the reduction of a. d-idose? b. d-sorbose?arrow_forward
- a. 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_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_forwardFor 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_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