Which of the following is the correct combination of C-2 epimer and C-4 epimer of Glucose respectively.a)Galactose, mannoseb)Mannose, galactosec)Vervascose, mannosed)Idose, galactoseCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Explanation:

The C-2 epimer and C-4 epimer of glucose can be determined by looking at the position of the hydroxyl (-OH) groups on these carbon atoms. Epimers are a type of stereoisomer that differ in the configuration of only one stereogenic center. In the case of glucose, the stereogenic centers are C-2 and C-4.

Glucose:

C-2 Epimer:

The C-2 epimer of glucose is mannose. To obtain the C-2 epimer, the -OH group on C-2 of glucose is switched with the -OH group on C-2 of mannose. This results in the following structure:
```
HO H OH
| | |
H- C - C - C - C - C - OH
| | |
OH H OH
```

C-4 Epimer:

The C-4 epimer of glucose is galactose. To obtain the C-4 epimer, the -OH group on C-4 of glucose is switched with the -OH group on C-4 of galactose. This results in the following structure:
```
HO OH OH
| | |
H- C - C - C - C - C - OH
| | |
OH OH H
```

Therefore, the correct combination of C-2 epimer and C-4 epimer of glucose is mannose and galactose, respectively. So, the correct answer is option 'B' - Mannose, galactose.

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