Which of the following is the correct structure of L-Glucose?
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Answer
(4) [figure]
Solution
L-Glucose is the mirror image of D-glucose ⇒ every –OH changes side.
[figure]
L-glucose: –OH at C2 left, C3 right, C4 left, C5 left
(A): C2 right, C3 left, C4 right ⇒ (A) is not L-glucose
(B): all four –OH left ⇒ (B) is not glucose
(C): C4, C5 –OH right ⇒ (C) is not L-glucose
(D): left, right, left, left ⇒ (D) is L-glucose
Answer: (4)