Draw Fischer projections for five aldoses below: glucose, mannose, galactose, arabinose and xylose. Now draw Fischer projections for the reduced and acetylated derivatives of these aldoses. From the Fischer drawings, select the meso molecules and redraw them, this time adding a plane of symmetry. Then select the molecules having an axis of symmetry, this time adding a line that skewers the middle of the drawing to indicate this symmetry.
Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
Draw Fischer projections for five aldoses below: glucose, mannose, galactose, arabinose and
xylose. Now draw Fischer projections for the reduced and acetylated derivatives of these
aldoses. From the Fischer drawings, select the meso molecules and redraw them, this time
adding a plane of symmetry. Then select the molecules having an axis of symmetry, this time
adding a line that skewers the middle of the drawing to indicate this symmetry.
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