Organic Chemistry III
	Professor Carl C. Wamser
	Quiz 25	Chem 336 - Spring 2005

1. (2 points) Draw STRUCTURES for the products of these reactions:

a) D-glucose + NaBH4 --->

b) D-fructose + excess HIO4 --->

2. (5 points) D-Xylose is the C-3 epimer of D-ribose. Draw structures for D-xylose in open-chain and cyclic forms as indicated below. Predict the better chair conformation.

3. (3 points) On the disaccharide shown below, identify each anomeric carbon with * and identify each as a or b. Identify each monosaccharide unit in relation to D-glucose.