Question

. Given a Fischer Projection, explain how to determine if a carbohydrates is D or L

Answer 1

Answer:

Fischer projection is the method used for representing a three-dimensional organic molecule as a two dimensional molecule.  

This method can be used for determining the D- and L- configuration of the organic molecules.

In the Fisher projection of carbohydrate molecule, if the hydroxyl group attached to the last stereocenter of the molecule is placed on the right-hand side, then the carbohydrate is said to have D-configuration.

Whereas, if the hydroxyl group attached to the last stereocenter of the molecule is placed on the left-hand side, then the carbohydrate is said to have L-configuration.