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А) A A CH2OH OH В H. OH C) C CH2OH H. D) D OH E) E B)

А) A A CH2OH OH В H. OH C) C CH2OH H. D) D OH E) E B)

Chemistry: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter23: The Chemistry Of Life
Section23.2: Carbohydrates
Problem 11SSC
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**Question 12 of 24** **Title:** Identifying the Anomeric Carbon **Question:** Which carbon is the anomeric carbon in the structure shown here? ### Diagram A hexagonal ring structure is illustrated, representing a carbohydrate molecule. The carbons in the ring are labeled A, B, C, D, and E. Various hydroxyl (OH) groups and hydrogen atoms are attached to these carbons. **Key Points of the Diagram:** - **Carbon A:** Attached to one hydroxyl group and one hydrogen atom. - **Carbon B:** Attached to one hydroxyl group and one hydrogen atom. - **Carbon C:** Attached to the end of the hexagonal structure. - **Carbon D:** Attached to a CH2OH group and one hydroxyl group. - **Carbon E:** Attached to one hydroxyl group and one hydrogen atom. ### Multiple Choice Options: - **A) A** - **B) B** - **C) C** - **D) D** (Selected Answer) - **E) E** **Explanation:** In carbohydrate chemistry, the anomeric carbon is the carbonyl carbon (carbon 1 in aldoses) or adjacent carbon (carbon 2 in ketoses) that becomes a chiral center during ring formation. In this structure, carbon D is identified as the anomeric carbon. #### Notes: Understanding the role of the anomeric carbon is crucial in stereochemistry and the reactivity of carbohydrates. The variations in the substituent groups on this carbon determine the formation of α and β anomers, influencing physical properties and biological functions.
Transcribed Image Text:**Question 12 of 24** **Title:** Identifying the Anomeric Carbon **Question:** Which carbon is the anomeric carbon in the structure shown here? ### Diagram A hexagonal ring structure is illustrated, representing a carbohydrate molecule. The carbons in the ring are labeled A, B, C, D, and E. Various hydroxyl (OH) groups and hydrogen atoms are attached to these carbons. **Key Points of the Diagram:** - **Carbon A:** Attached to one hydroxyl group and one hydrogen atom. - **Carbon B:** Attached to one hydroxyl group and one hydrogen atom. - **Carbon C:** Attached to the end of the hexagonal structure. - **Carbon D:** Attached to a CH2OH group and one hydroxyl group. - **Carbon E:** Attached to one hydroxyl group and one hydrogen atom. ### Multiple Choice Options: - **A) A** - **B) B** - **C) C** - **D) D** (Selected Answer) - **E) E** **Explanation:** In carbohydrate chemistry, the anomeric carbon is the carbonyl carbon (carbon 1 in aldoses) or adjacent carbon (carbon 2 in ketoses) that becomes a chiral center during ring formation. In this structure, carbon D is identified as the anomeric carbon. #### Notes: Understanding the role of the anomeric carbon is crucial in stereochemistry and the reactivity of carbohydrates. The variations in the substituent groups on this carbon determine the formation of α and β anomers, influencing physical properties and biological functions.
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