Anyone know how to tell the difference? These questions always seem to get me and I think the answer has something to do with the location of an OH group.
Thanks
Thanks
D and L sugars
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rockets32 said:
L sugars have the hydroxyl group at the lowest stereogenic center pointing to the left in Fischer projection (Remember: L >> Left)
D sugars have the hydroxyl group at the lowest stereogenic center pointing to the right in Fischer projection. Most naturally occuring sugars are D sugars.
The ring forms are usually represented using the Haworth projections. -OH on the right in a Fischer projection is up in a Haworth projection. -OH on the left in a Fischer projection is down in a Haworth projection. For D sugars the terminal -CH2OH group is always up in Haworth projections whereas for L sugars the -CH2OH group is down.
