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JEE Main · 2006 · 30 Apr 2006 · Offline · Biomolecules

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The term anomers of glucose refers to
  1. (A)isomers of glucose that differ in configurations at carbons one and four (C-1 and C-4)
  2. (B)a mixture of (D)-glucose and (L)-glucose
  3. (C)enantiomers of glucose
  4. (D)isomers of glucose that differ in configuration at carbon one (C-1)✓ Correct

Answer: (D)

Solution

When glucose cyclises, its open-chain aldehyde carbon, C-1, becomes a hemiacetal centre and turns into a new stereocentre. The two ring forms that differ only in the configuration at this single carbon are the and anomers. Anomers are therefore isomers of glucose that differ in configuration at carbon one alone.

JEE Main · 2006 · 30 Apr 2006 · Offline · Single correct option

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