Question:
The configuration at C-8 and C-9 position of quinine is:
The configuration at C-8 and C-9 position of quinine is:
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Quinine (Levo) = 8S, 9R; Quinidine (Dextro) = 8R, 9S.
Updated On: May 15, 2026
- 8R,9S
- 8S,9R
- 9S,8S
- 9R,8R
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Quinine and Quinidine are diastereomers found in Cinchona bark, differing in their stereochemistry.
Step 2: Meaning
Configuration is assigned using the Cahn-Ingold-Prelog (CIP) priority rules.
Step 3: Analysis
Quinine has the (8S, 9R) configuration. Its diastereomer, Quinidine, has the (8R, 9S) configuration.
Step 4: Conclusion
The specific configuration for Quinine at the 8 and 9 positions is 8S and 9R. Final Answer: (B)
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