Question

The anomeric carbon in D(+) glucose is

• A. C – 1 carbon
• B. C – 2 carbon
• C. C – 5 carbon
• D. C – 6 carbon

Answer 1

Answer: (A)

C – 1 carbon

Answer 2

D-glucose exists in two optically active forms known as $\alpha - D$ -glucose and $\beta - D -$glucose. The two isomers are inter convertible in aqueous solutions.

Carbon – 1 in both configurations I and II is called an anomeric carbon atom.