Concept explainers
Interpretation:
The name and structures of the aldopentoses are to be represented.
Concept Introduction:
▸ The Kiliani-Fischer reaction is used for producing epimers of higher aldoses from a lower aldose, that is, a single aldose having a lesser number of carbon atoms produces a mixture consisting of two epimeric aldoses with higher number of carbon atoms.
▸ Stereochemistry of sugar compounds: A carbon atom that has four variable groups attached to it is said to be a stereogenic or chirality center of that atom. A stereocenter is that point in a molecule, where any two groups exchange their places to form stereoisomers. Moreover, the pair of diasteromers that show different configuration at the chirality center are called epimers.
▸ The Fischer projection is a way of representing
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Organic Chemistry
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- The tea leaves that contain the caffeine to be isolated are predominantly composed of cellulose, a natural and extremely abundant polymer of glucose. Look up the chair structure of B-D-glucose (B-D-glucopyranose, the monomer from which the cellulose polymer is composed). Draw this structure, draw the flipped chair, and indicate which conformer you think is more stable, if either. BRIEFLY explain your choice.arrow_forwardPropose structural formulas for the following polysaccharides. Q.) Pectic acid is the main component of pectin, which is responsible for the formation of jellies from fruits and berries. Pectic acid is a polymer of d-galacturonic acid in the pyranose form joined by a-1,4-glycosidic bonds.arrow_forwardCan you help draw out an example of this functional group and describe thses two patterns of example?arrow_forward
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