The correct corresponding order of names of four aldoses with configuration given below respectively, is

Question

The correct corresponding order of names of four aldoses with configuration given below <img class="img-fluid question-image" alt="Question" src="https://cdn.tardigrade.in/q/nta/c-rsj1gtkjhclm.png" /> respectively, is (A) L-erythrose, L-threose, L-erythrose, D-threose (B) D-threose, D-erythrose, L-threose, L-erythrose (C) L-erythrose, L-threose, D-erythrose, D-threose (D) D-erythrose, D-threose, L-erythrose, L-threose

Tardigrade Admin · Accepted Answer

If −OH group is on the right-hand side to the last carbon with respect to the highest oxidised carbon at the top, it is called D-isomer and if it is on the left side, it is called L-isomer.
So, the names of the compounds are D-erythrose, D-threose, L-erythrose, L-threose, respectively.

Q. The correct corresponding order of names of four aldoses with configuration given below respectively, is

L-erythrose, L-threose, L-erythrose, D-threose

D-threose, D-erythrose, L-threose, L-erythrose

L-erythrose, L-threose, D-erythrose, D-threose

D-erythrose, D-threose, L-erythrose, L-threose

If −OH group is on the right-hand side to the last carbon with respect to the highest oxidised carbon at the top, it is called D-isomer and if it is on the left side, it is called L-isomer. So, the names of the compounds are D-erythrose, D-threose, L-erythrose, L-threose, respectively.

Q. The correct corresponding order of names of four aldoses with configuration given below

respectively, is

If −OH group is on the right-hand side to the last carbon with respect to the highest oxidised carbon at the top, it is called D-isomer and if it is on the left side, it is called L-isomer.
So, the names of the compounds are D-erythrose, D-threose, L-erythrose, L-threose, respectively.