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In the ring structure of fructose, the a...

In the ring structure of fructose, the anomeric carbon is

A

`C1`

B

`C2`

C

`C3`

D

`C4`

Text Solution

Verified by Experts

The correct Answer is:
B
`C2` is the anomeric carbon in frustose. Since fructose contains a keto group , it forms an intramolecular hemiketal. In the hemiketal formation, `C6-OH` (or `C5 - OH`) of the fructose combines (through nuclcophilic addition reaction with `C2`-Keto group. As a result, `C2` becomes chiral and thus has two possible arrangment of `CH_(2) OH` and `OH` groups around it.
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Knowledge Check

  • Structure of D-fructose is

    A
    B
    C
    D

  • In alpha -D-Glucose, the anomeric carbon is at:

    A
    1
    B
    2
    C
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    D
    5

  • Cyclic structure of fructose resembles with

    A
    pyran
    B
    furan
    C
    pyridine
    D
    oxiran

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