Which of the following sites represents the anomeric carbon? О ОН B O с A E D C A D CH3OH ОН ОН E OH

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
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**Question:** Which of the following sites represents the anomeric carbon?

**Diagram Explanation:**

This is a molecular structure of a sugar, likely a monosaccharide, depicted in a cyclic form. The diagram features carbon and oxygen atoms, along with hydroxyl (OH) groups.

- **Labels:**
  - The structure is labeled with letters at specific carbon atoms: A, B, C, D, and E.

- **Functional Groups:**
  - Hydroxyl groups (OH) are attached to certain carbon atoms.
  - A methoxy group (CH3) is attached to a carbon.

- **Anomeric Carbon:**
  - The anomeric carbon is the carbon atom that forms a glycosidic bond and is adjacent to the oxygen in the ring. It typically has the potential to form a new stereocenter when the ring opens.

**Options:**

- ○ C
- ○ A
- ○ B
- ○ E
- ○ D

**Note:**

Participants are required to identify the anomeric carbon among the given structural points labeled A, B, C, D, and E. The anomeric carbon is the one that was originally the carbonyl carbon (aldehyde or ketone) before it formed the hemiacetal or hemiketal in the cyclic structure.
Transcribed Image Text:**Question:** Which of the following sites represents the anomeric carbon? **Diagram Explanation:** This is a molecular structure of a sugar, likely a monosaccharide, depicted in a cyclic form. The diagram features carbon and oxygen atoms, along with hydroxyl (OH) groups. - **Labels:** - The structure is labeled with letters at specific carbon atoms: A, B, C, D, and E. - **Functional Groups:** - Hydroxyl groups (OH) are attached to certain carbon atoms. - A methoxy group (CH3) is attached to a carbon. - **Anomeric Carbon:** - The anomeric carbon is the carbon atom that forms a glycosidic bond and is adjacent to the oxygen in the ring. It typically has the potential to form a new stereocenter when the ring opens. **Options:** - ○ C - ○ A - ○ B - ○ E - ○ D **Note:** Participants are required to identify the anomeric carbon among the given structural points labeled A, B, C, D, and E. The anomeric carbon is the one that was originally the carbonyl carbon (aldehyde or ketone) before it formed the hemiacetal or hemiketal in the cyclic structure.
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