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 BOOK& SG/SM
- 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_forwardDraw 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_forwardDraw 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) 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_forwardWhat products are obtained from the reduction of a. d-idose? b. d-sorbose?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
- For D-arabinose:a. Draw its enantiomer.b. Draw an epimer at C3.c. Draw a diastereomer that is not an epimer.d. Draw a constitutional isomer that still contains a carbonyl group.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_forwardConvert each cyclic monosaccharide into its acyclic form. CH,OH он, H. OH OH но O. OH HOCH, OH а. с. но- OH CH2OH он OH ОН OH OH CH2OH b. OH d. HO f. Но H. OH OH Но Но Но Он OHarrow_forward
- Draw the structure of the following:a. D/L-glucose & D/L-fructoseb. α/β-D-glucopyranose & α/β-D-fructopyranosec. α/β-D-glucofuranose & α/β-D-fructofuranosearrow_forwardDraw the Fischer projection of each pair of compound. Identify the term that best describes both compounds using any of the following choices namely: Aldoses, ketoses, trioses, or aldohexoses.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