Question:
Which of the following statements is true about D-Glucose and D-Talose?
Which of the following statements is true about D-Glucose and D-Talose?
Show Hint
Epimers differ at ONE chiral carbon.
Diastereomers differ at more than one chiral carbon.
D-Glucose and D-Talose differ at C-2 and C-4, so they are diastereomers (not epimers).
Diastereomers differ at more than one chiral carbon.
D-Glucose and D-Talose differ at C-2 and C-4, so they are diastereomers (not epimers).
Updated On: Sep 1, 2026
- Both are enantiomeric pairs
- Both are epimers
- Both are merely diastereomers and not epimers
- D-Glucose is an aldohexose while D-Talose is a ketopentose
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
Stereoisomers are molecules that have the same molecular formula and connectivity but differ in spatial arrangement.
They include enantiomers, diastereomers, and epimers.
Epimers differ in configuration at only one chiral carbon.
Diastereomers differ in configuration at one or more chiral carbons but are not mirror images.
Step 2: Detailed Explanation:
D-Glucose and D-Talose are both aldohexoses (six-carbon sugars with an aldehyde group).
They differ in configuration at multiple carbon atoms.
Specifically, they differ at C-2 and C-4 of the carbon chain.
Since they differ at more than one chiral center, they are diastereomers but not epimers.
Enantiomers are mirror images (not applicable here).
Thus, option (C) is correct: both are merely diastereomers and not epimers.
Step 3: Final Answer:
Thus, the correct statement is that both are merely diastereomers and not epimers, which corresponds to option (C).
[0.5cm]
Stereoisomers are molecules that have the same molecular formula and connectivity but differ in spatial arrangement.
They include enantiomers, diastereomers, and epimers.
Epimers differ in configuration at only one chiral carbon.
Diastereomers differ in configuration at one or more chiral carbons but are not mirror images.
Step 2: Detailed Explanation:
D-Glucose and D-Talose are both aldohexoses (six-carbon sugars with an aldehyde group).
They differ in configuration at multiple carbon atoms.
Specifically, they differ at C-2 and C-4 of the carbon chain.
Since they differ at more than one chiral center, they are diastereomers but not epimers.
Enantiomers are mirror images (not applicable here).
Thus, option (C) is correct: both are merely diastereomers and not epimers.
Step 3: Final Answer:
Thus, the correct statement is that both are merely diastereomers and not epimers, which corresponds to option (C).
[0.5cm]
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