A.the most common carbohydrate of its type D-glucose, D-mannose is found in fewe
ID: 807054 • Letter: A
Question
A.the most common carbohydrate of its type D-glucose, D-mannose is found in fewer biological provesses, while D-altrose is rare. offer a reasonable explanation based upon the structures shown below.
B. what is the relationship of D-glucose,D-mannose, and D-altrose to each other, in terms of being enantiomers, diastereomers,constitutional isomers, the same compound, or totally different?
2- Draw (s)-2,4-dimethylhexane in a fischer projection putting the lowest priority group on the top back.
3-draw the following compound as a line drawing in the E configuration.
CH3CH=CBRCH2CH3
4- A pure sample of 3-methylhexane does not show optical activity when properly measured. explain how this can happen.
Explanation / Answer
Answer
1.D-glucose, D-mannose and D-altrose are diastereomers as their structures are not mirror images and are not super imposable. Therefore they are distict and different compounds.
4. 3-methyl hexane is not planar and it is highly unlikely that it is optically active. Moreover it cannot form enantiomers as both form appear identical.