The cyclic forms of D-glucose are alpha-D-glucopyranose and beta-D-glucosepyrano
ID: 524442 • Letter: T
Question
The cyclic forms of D-glucose are alpha-D-glucopyranose and beta-D-glucosepyranose. They differ in configuration at the anomeric carbon. What do we call two monosacchraides that differ at the hemiacetal or anomeric carbon? What is the general term for stereoisomer that arc mirror images of each other? What is the general term for stereoisomer, that are not mirror images of each other? What is the general term for two diastereomers that differ in configuration at only one chiral orc stereogenic centers? What was the name of the sugar derivative you made in lab?Explanation / Answer
1) the structures are almost identical, except that in the form, the OH group on the far right is down, and, in the form, the OH group on the far right is up. They are a class of stereoisomer called an anomer.
Answer: Anomers
2) what is the general term for stereoisomer that are mirror images of each other
Answer: Enantiomers
3) what is the general term for stereoisomer that are not mirror images of each other
Answer: Diastereomers
4) what is the general term for two diastereomers that differ in configuration at only one chiral center or stereogenic center
Answer: Epimers
Epimers are diastereomers that contain more than one chiral center but differ from each other in the absolute configuration at only one chiral center.
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