Organic Chemistry III
	Professor Carl C. Wamser
Chem 336 - Spring 2006	Pre-Quiz 25

(must be done in WebCT before Fri., May 5, 8:30 am)

1. The absolute configuration of D-erythrose is

* a. 2R,3R  
b. 2R,3S  
c. 2S,3R  
d. 2S,3S

2. The C-2 epimer of D-glucose is

a. L-glucose  
b. D-galactose  
* c. D-mannose  
d. D-fructose  
e. D-idose

3. The formation of a pyranose ring from D-ribose would join which two carbon atoms with a single oxygen atom?

* a. 1&5  
b. 1&6  
c. 2&6  
d. 2&5  
e. 1&4

4. The anomer of beta-D-glucopyranose is

a. beta-D-glucofuranose  
* b. alpha-D-glucopyranose  
c. beta-L-glucopyranose  
d. alpha-L-glucopyranose  
e. beta-D-fructopyranose

5. Sorbitol is obtained by

a. oxidation of glucose  
* b. reduction of glucose  
c. hydrolysis of sucrose  
d. oxidation of fructose  
e. fermentation