Which of the following is the structure of L-Arabinose? (A) (B) (C) (D) None of these

L-Arabinose is the enantiomer of D-arabinose. In the Fischer projection of D-arabinose the OH groups on C 2 , C 3 and C 4 lie left, right, right, so in L-arabinose every centre must be inverted: right, left, left - which is structure (B). (Structure (A) is D-arabinose itself.) Ans. (B)

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Chemistry - STEREO ISOMERISM Question with Solution | TestHub

ChemistrySTEREO ISOMERISMABSOLUTE AND RELATIVE CONFIGURATIONEasy2 minQB

ChemistryEasysingle choice

Which of the following is the structure of L-Arabinose?

(A) structure (B)

Options:

Answer:

Solution:

L-Arabinose is the enantiomer of D-arabinose. In the Fischer projection of D-arabinose the OH groups on C₂, C₃ and C₄ lie left, right, right, so in L-arabinose every centre must be inverted: right, left, left - which is structure (B). (Structure (A) is D-arabinose itself.)

Ans. (B)

Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:ABSOLUTE AND RELATIVE CONFIGURATION

⏱ 2mℹ️ Source: QB

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