Study the structures of -D- glucopyranose and -D- glucopyranose and mark the correct statement-

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Pyranose and Furanose

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Question

Study the structures of $α - D - (+)$ glucopyranose and $β - D - (+)$ glucopyranose and mark the correct statement:

Structures I and II are enantiomers

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Structures I and II are anomers

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The two structures I and II differ in the configuration of

C_{1}

and

C_{4}

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Both the structures I and II give 2, 4-DNP test

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Solution

The correct option is A Structures I and II are anomers
Anomers are the structures which differ in configuration at only one atom.
Given structures are same but one is $α$ and another is $β$ , and thus they are anomers.

Hence, option $B$ is correct.

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Similar questions

Three structures are given below in which two glucose units are linked.
Which of these linkages between glucose units are between $C_{1} a n d C_{4}$ and which linkages are between $C_{1} a n d C_{6} ?$

(a) (i) is between C1 and C4, (ii) and (iii) are between C1 and C6
(b) (i) and (ii) are between C1 and C4, (iii) is between C1 and C6
(c) (i) and (iii) are between C1 and C4 (ii) is between C1 and C6
(d) (i) and (iii) are between C1 and C6, (ii) is between $C_{1} a n d C_{4}$

Their cyclic structures of monosaccharides are given below which of these are anomers.

(a) I and II (b) II and III
(c) I and III (d) III is anomer of I and II