CHEM239Asum11_Quiz-5 - - and -ano mers of the 5-membered...

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Chem 239A Summer, 2011 Quiz#5 Prof. Sasaki _____________________________________________________________________ 1. Draw the complete structures of the following compounds. a. Any aldotetrose b. α -Methyl glycopyranoside of any aldohexose 2. a. Draw Fisher projection for all possible D-aldopentoses. b.Take any one of them and draw Haworth projections for both the
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Unformatted text preview: - and -ano mers of the 5-membered ring hemiacetal. 3. When glucose is dissolved in H 2 18 O, one oxygen atom in glucose slowly exchanges to with the labeled water, so the glucose eventually contains one 18 O. Starting with a cyclic structure of glucose, write a mechanism that explains this experimental observation....
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