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Numbering carbon atoms in fructose and glucose

I'm not quite sure about how to do this
Original post by M0nkey Thunder
I'm not quite sure about how to do this


When I did my AS biology this is how I learnt it for alpha glucose it was
Down, down, up, down, in the group and beta up
So
The first oh will be on carbon 1 and that will be down so the one just below the O near the Ch2oh
Then you just just label the rest
So you start off with the one, with the first oH group and label it carbon one
Then down , down, up, down,in the group
I hope you get it aha
It's more understandable using paper
image.jpg
Original post by spiritless98
When I did my AS biology this is how I learnt it for alpha glucose it was
Down, down, up, down, in the group and beta up
So
The first oh will be on carbon 1 and that will be down so the one just below the O near the Ch2oh
Then you just just label the rest
So you start off with the one, with the first oH group and label it carbon one
Then down , down, up, down,in the group
I hope you get it aha
It's more understandable using paper
image.jpg


Hey! I'm sorry but what do you mean by "down,down,up down" and "group"? When I'm at the first carbon, I can go to the carbon below it, which I presume is number 2? Where do I go from there?
Original post by M0nkey Thunder
Hey! I'm sorry but what do you mean by "down,down,up down" and "group"? When I'm at the first carbon, I can go to the carbon below it, which I presume is number 2? Where do I go from there?


-Okay so start from carbon one, that's when the OH group is down
- then the second carbon the oh group is down
- 3rd carbon the OH group is up
-4th carbon it's down
5th is CH2OH and I just call it in the group to stop u confusing it with the other carbons


Posted from TSR Mobile
Original post by spiritless98
-Okay so start from carbon one, that's when the OH group is down
- then the second carbon the oh group is down
- 3rd carbon the OH group is up
-4th carbon it's down
5th is CH2OH and I just call it in the group to stop u confusing it with the other carbons


Posted from TSR Mobile


Ohhhh, thank you very much for your help! By any chance, do you have an idea about how I would go about with numbering carbons for fructose?
Original post by M0nkey Thunder
Ohhhh, thank you very much for your help! By any chance, do you have an idea about how I would go about with numbering carbons for fructose?


I guess for this one just keep drawing it out and labelling it until you get the hang of it :smile:

Good luck x


Posted from TSR Mobile

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