Which of the following pairs is a C_2-epimer? | vedclass

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(B) Epimers are diastereomers that differ in configuration at only one stereocenter. $C_2$-epimers specifically differ in configuration only at the se

Vedclass · Accepted Answer

$D$-Glucose,$D$-Mannose

Vedclass · Answer

(B) Epimers are diastereomers that differ in configuration at only one stereocenter. $C_2$-epimers specifically differ in configuration only at the second carbon atom $(C_2)$. $D$-Glucose and $D$-Mannose are aldohexoses that have the same configuration at all chiral centers except for the $C_2$ position. In $D$-Glucose,the $-OH$ group at $C_2$ is on the right,whereas in $D$-Mannose,the $-OH$ group at $C_2$ is on the left. Therefore,$D$-Glucose and $D$-Mannose form a $C_2$-epimer pair.

Which of the following pairs is a $C_2$-epimer?

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