Stereoisomers of Pyranose Monosaccharides

The yellow shaded box contains the structure of a pyranose aldohexose. Beneath that are the structures of four different stereoisomers, labled A through D. The questions posed below the formulas concern the structural relationship of the shaded reference structure to each of the other four.

 1. Which of the formulas (A to D) is an anomer of the reference structure? Enter appropriate letters or X for none
 2. Which of the formulas (A to D) is an epimer of the reference structure? Enter appropriate letters or X for none
 3. Which of the formulas (A to D) is a diastereomer of the reference structure? Enter appropriate letters or X for none


   
This script written by William Reusch, Dept. of Chemistry, Michigan State University. Please send comments and corrections to whreusch@pilot.msu.edu.