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Hemi-acetals and -ketals, cyclic

Hemi-acetals and -ketals, cyclic s. Lactols Hemiketals... [Pg.264]

We saw in the previous chapter that aldehydes react with alcohols to form hemi-acetals, and hemiacetals react with another alcohol to afford acetals. Well, the intramolecular reaction of the aldehyde carbon of an aldose monosaccharide with one of the hydroxyl groups in the same molecule affords a cyclic hemiac-etal. An mferaiolecular reaction of this hemiacetal with the hydroxyl group of another sugar molecule provides an acetal functional group. This kind of acetal linkage connects monosaccharides into polysaccharides. Biochemists refer to these acetal (and ketal) bonds as glycoside bonds. [Pg.322]

LEARNING CHECK 14.7 identify each of the following as cyclic haniacetals, hemi-ketals, acetals, or ketals and show structural formulas for the hydrolysis products ... [Pg.516]

See other pages where Hemi-acetals and -ketals, cyclic is mentioned: [Pg.504]    [Pg.541]    [Pg.257]   


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Acetal and ketal

Acetals and ketals

Acetals and ketals, cyclic

Acetals cyclic

Acetals ketals

Cyclic acetalization

Cyclic ketal

Hemi-acetals

Hemi-acetals and -ketals

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