Q. 13.21
Question
Identify each of the following as the D or L enantiomer:
a. b.
c. d.
Step-by-Step Solution
Verifieda. The threose is D enantiomer.
b. The xylulose is D enantiomer.
c. The mannose is L enantiomer.
d. The allose is D enantiomer.
We need to identify threose is D or L enantiomer.
In a natural molecule, if the -OH bunch is connected to the base chiral focus and it focuses towards the right then the compound is a D-enantiomer.
In the given construction of threose, the - OH bunch is connected to the base chiral focus and it focuses towards the right. Consequently, it's a D-enantiomer.
We need to identify whether xylulose is D or L enantiomer.
In a natural molecule, if the - OH bunch is connected to the base chiral focus and it focuses towards the right then the compound is a D-enantiomer.
In the given design of xylulose, the -OH bunch is appended to the base chiral focus and it focuses towards the right. Hence, it's a D-enantiomer.
We need to identify whether mannose is D or L enantiomer.
In a natural molecule, if - OH bunch is appended to the base chiral focus and it focuses towards the left then the compound is an L-enantiomer.
In the given construction of Mannose, the -OH bunch is connected to the base chiral focus and it focuses towards the left. In this manner, it's an L-enantiomer.
We need to identify allose is D or L enantiomer.
In a natural molecule, if the - OH bunch is joined to the base chiral focus and it focuses towards the right then the compound is a D-enantiomer.
In the given construction of allose, the -OH bunch is joined to the base chiral focus and it focuses towards the right. Thusly, it's a D-enantiomer.