Question

The given structures (I) and (II) represent configuration of the simplest sugar glyceraldehyde. Which of the following statements is not correct for the structures?

• A. (I) represents D-form while (II) represents L-form of glyceraldehyde.
• B. The sugars having same configuration as D-glyceraldehyde are designated as D-sugars.
• C. Natural glucose and fructose are D-forms
• D. D is dextrorotatory while L is laevorotatory enantiomer.

Answer 1

Answer: (D)

$D$-represents $—OH$ group on the right side of lowest asymmetric $C$-atom while $L$ represents $—OH$ group on the left.