Compound U Is an Aldotetrose That Can Be Oxidized to an Optically

question 29

Essay

Compound U is an aldotetrose that can be oxidized to an optically active aldaric acid,compound V.Upon Wohl degradation,compound U is converted into D-glyceraldehyde.Upon Kiliani-Fischer chain extension,compound U is converted into compounds W and X.Compound W can be oxidized to an optically inactive aldaric acid,compound Y,but compound X is oxidized to an optically active aldaric acid Z.What are the structures of compounds U-Z?

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Definitions:

Capital Expenditures

Capital invested by a business to purchase or improve tangible assets, like real estate, factories, or machinery.

Stockholders' Equity

Represents the owners' claims on the assets of a corporation, calculated as total assets minus total liabilities.

Residual Value

The projected amount an asset is expected to yield when sold at the conclusion of its useful life.

Double-Declining-Balance

An accelerated method of depreciation where an asset’s book value is reduced at double the rate of its straight-line depreciation.