Sunday, July 2, 2017

organic chemistry - Is this disaccharide sucrose?




I want to know if the structure I drew is sucrose or an enantiomer of it.


The One I Made:
The one I made




The one on internet:
The one on internet



Answer



Those are the same molecules - the fructose part has just been rotated about the glycosidic bond (the oxygen between the two).


Enantiomers are molecules that have the same formula, but are non-superimposable - there have to be differences in chirality. If you can superimpose the structures by rotating about a bond or by rotating the molecule, it is not an enantiomer.


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