Looking for classes? Ksquare Career Institute, Bengaluru →
The correct corresponding order names of four aldoses with configuration given below respectively, is:
A
L-erythrose, L-threose, D-erythrose, D-threose
B
D-erythrose, D-threose, L-erythrose, L-threose
C
L-erythrose, L-threose, L-erythrose, D-threose
D
D-threose, D-erythrose, L-threose, L-erythrose
Explanation
Bottom chiral –OH decides D/L; relative –OH positions distinguish erythrose/threose.
Detailed Solution
D/L is decided by the –OH on the chiral carbon farthest from CHO (right = D, left = L); erythrose has both –OH on the same side, threose on opposite sides.
So the order is D-erythrose, D-threose, L-erythrose, L-threose.