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.
Provide the correct iupac name for the compound shown here. Please explain. Include stereochemistry
R-S nomenclature : R/S notation explains the stereochemistry of the chiral compounds.
Chiral center or chiral carbon : The carbon center which is directly connected with four different atoms or groups is considered as chiral center.
Rules of R/S nomenclature:
1) Find the chiral center of the molecule.
2) Assign priorities to the groups/atoms of the chiral center based on the mass of the atoms or groups. Assign first priority to the highest mass and least priority to the lowest mass.
3) If the masses of two directly connected groups are same, then go for next bonded atom until to differentiate the mass of the two groups.
3) If the priority direction of the groups is clock wise, assign R-notation to the chiral center.
4) If the priority direction of the groups is anti clock wise, assign S-notation to the chiral center.
5) Note: If the least priority group is on the horizontal line of the fisher projection or on the thick wedge line of the wedge projection, assign opposite notation to the priority direction.
Example: If the 4th priority group is on the thick wedge line of the chiral center with clock wise priority of the groups, then assign S-notation.
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