E4,241b,S07 - EXAM 4 CHEMISTRY 241b April 26, 2007 Dr....

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EXAM 4 CHEMISTRY 241b April 26, 2007 Dr. Spurgeon ANSWER KEY __________________________________________________________________________________________ 1. (20 pts. total) Provide the requested information (structure, systematic name, or common name). a. (6 pts.) Provide the Fischer projection and name for the sugar that would be considered the starting material in a Kiliani-Fischer synthesis of D-Glucose and D-Mannose. b. (3 pts.) Identify this sugar: c. (5 pts.) Draw D-Fructose in it’s Haworth β –D-Fructopyranose form: d. (6 pts.) If you treated all of the sugars in parts ‘a’, ‘b’, and ‘c’ with excess HIO 4 what products would you get for each sugar: Name _____________________ H OH H HO H H OH O H HO OH Name ______________________________ Sugar in part ‘a’ Sugar in part ‘b’ Sugar in part ‘c’ D-Arabinose β -D-Altrofuranose 4 HCO 2 H + 1 HCHO 5 HCO 2 H + 1 HCHO 3 HCO 2 H + 2 HCHO + 1 CO 2 CHO H HO OH H OH H CH 2 OH O H OH OH CH 2 OH OH H OH H H H
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2. (30 points) Draw the representative disaccharides that satisfies the following statements – your structures may be in either chair or Hayworth projections, but they must accurately show the appropriate linkages and stereochemistry. Then provide both the
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This note was uploaded on 12/09/2009 for the course CHEM UNIVERSITY taught by Professor Spurgen during the Spring '09 term at University of Arizona- Tucson.

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E4,241b,S07 - EXAM 4 CHEMISTRY 241b April 26, 2007 Dr....

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