Biomolecules Lecture-2
Configuration of aldoses
Aldotetrose have two asymmetric centers
$(2)^2=4 \text { stereoisomers } $
$D \text {-Sugars - } 2 $
$\text { L-Sugars - } 2 $
The name of aldotetrose
Configuration of d-aldose
Structure
Problem
Are D-erythrose and L-erythrose enantiomers or diastereomers?
Since both the compounds are mirror image ${-}$ enantiomers
Configuration of ketoses
D-ribulose and D-xylulose
Structural formulas for monosaccharides