Home
Class 12
CHEMISTRY
Carbohydrates which differ in configura...

Carbohydrates which differ in configurartion at the glycosidic carbon(i.e.,`C_(1)` in aldose and `C_(2)` in ketoses) are called:

A

anomers

B

epimers

C

diastereomers

D

enantiomers

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • BIOMOLECULES

    HIMANSHU PANDEY|Exercise Level 2 (Q.1 To Q.25)|25 Videos

  • BIOMOLECULES

    HIMANSHU PANDEY|Exercise Level 2 (Q.26 To Q.50)|25 Videos

  • BIOMOLECULES

    HIMANSHU PANDEY|Exercise Match The Column|6 Videos

  • AROMATIC HYDROCARBONS

    HIMANSHU PANDEY|Exercise Subjective Type Problems|9 Videos

  • CABOXYLIC ACIDS AND ITS DERIVATIVES

    HIMANSHU PANDEY|Exercise Subjective Type Problems|8 Videos

Similar Questions

Explore conceptually related problems

Find true and False from the following statements regarding carbohydrates S_(1) : All monosaccharides whether aldoses or ketoses are reducing sugars S_(2) : Bromine water can be used to differentiate between aldoses and ketones S_(3) : A pair of diasteromeric aldoses which differ only in configuration at C-2 are anomers. S_(4) : Osazone formation destroys the configuration of C-2 of an aldose, but does not affect the configuration of the rest of the molecule.

Monosaccharides are polyhydric aldehydes and ketones which cannot be hydrolysed into simpler carbohydrates. The monosaccharides containing -CHO group are called aldoses while those containing C=O group are called ketoses. The aldehyde group is always present at C_(1) while keto group is generally present at C_(2) . All monosaccharides are oxidised by Tollen's reagent and Fehling solution and are called reducing sugars. The monosaccharide molecules may be assigned D and L-configurations depending upon whether the configuration of the molecule is related to D- or L-glyceraldehyde. If the -OH group is attached to the carbon adjacent to the -CH_(2)OH group (last chiral carbon) is on the right hand side, it is assigned D-configuration. The molecule is assigned L-configuration if the -OH group attached to the carbon adjacent to the -CH_(2)OH group is on the left. The monosaccharides contain one or more chiral carbon atoms. Pentoses and hexoses have cyclic structures furanose (five membered) and pyranose (six membered). During cyclization, C_(1) in aldohexoses and C_(2) in fructose become chiral and the newly formed -OH group may be either on the left or on the right in Fischer projection formulae. These monosaccharides, therefore, exist in two stereoisomeric forms called alpha -anomer and beta -anomer while C_(1) and C_(2) are called glycosidic or anomeric carbon. The bonds joining glycosidic carbon are called glycosidic linkages. D(+) glucose exists in two stereoisomeric forms, alpha -D- glucose and beta -D-glucose. When either of these two forms of glucose i.e., alpha-D- glucose are dissolved in water and allowed to stand, these get slowly converted into other form and an equilibrium mixture of both is formed. This process is called mutarotation. Two forms of D-glucopyranose are called

Monosaccharides are polyhydric aldehydes and ketones which cannot be hydrolysed into simpler carbohydrates. The monosaccharides containing -CHO group are called aldoses while those containing C=O group are called ketoses. The aldehyde group is always present at C_(1) while keto group is generally present at C_(2) . All monosaccharides are oxidised by Tollen's reagent and Fehling solution and are called reducing sugars. The monosaccharide molecules may be assigned D and L-configurations depending upon whether the configuration of the molecule is related to D- or L-glyceraldehyde. If the -OH group is attached to the carbon adjacent to the -CH_(2)OH group (last chiral carbon) is on the right hand side, it is assigned D-configuration. The molecule is assigned L-configuration if the -OH group attached to the carbon adjacent to the -CH_(2)OH group is on the left. The monosaccharides contain one or more chiral carbon atoms. Pentoses and hexoses have cyclic structures furanose (five membered) and pyranose (six membered). During cyclization, C_(1) in aldohexoses and C_(2) in fructose become chiral and the newly formed -OH group may be either on the left or on the right in Fischer projection formulae. These monosaccharides, therefore, exist in two stereoisomeric forms called alpha -anomer and beta -anomer while C_(1) and C_(2) are called glycosidic or anomeric carbon. The bonds joining glycosidic carbon are called glycosidic linkages. D(+) glucose exists in two stereoisomeric forms, alpha -D- glucose and beta -D-glucose. When either of these two forms of glucose i.e., alpha-D- glucose are dissolved in water and allowed to stand, these get slowly converted into other form and an equilibrium mixture of both is formed. This process is called mutarotation. Which of the following statements is not correct?