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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: boostar on April 13, 2008, 08:12:30 AM

Title: The structure for the oxidised form of glucose
Post by: boostar on April 13, 2008, 08:12:30 AM

Hi guys, I hope this is in the right form. I am wondering what the structure for the oxidized form of glucose would be? I am thinking that an oxygen is added somewhere, but I don't know where.

http://www.greenspirit.org.uk/resources/glucose.gif

Any help would be appreciated.

Title: Re: The structure for the oxidised form of glucose
Post by: Yggdrasil on April 13, 2008, 02:35:46 PM

There are a few common ways in which glucose could be oxidized.  The first is oxidation to an aldonic acid in which the aldehyde group of glucose is oxidized to a carboxylic acid.  This occurs in basic solution in the presence of an oxidizing agent and is commonly used as a test of whether a sugar is an aldose or a ketose.

Carbon 6 of glucose can be oxidized from an alcohol to a carboxylic acid via an enzyme catalyzed reaction.  This reaction produces D-glucuronic acid, an important component of the polysacchardies in the extracellular matrix.

Periodic acid can also oxidize many carbohydrates including glucose.  Periodic acid induces a breakage in carbon-carbon bonds where the adjacent carbons both have hydroxyl groups.  In the reaction, the hydroxyls are oxidized to carbonyl groups.

[edit: thanks for noticing the typo, Borek]

Title: Re: The structure for the oxidised form of glucose
Post by: Borek on April 13, 2008, 02:47:17 PM

Quote from: Yggdrasil on April 13, 2008, 02:35:46 PM

oxidation

Quote

in which the aldehyde group of glucose is reduced

:D

Title: Re: The structure for the oxidised form of glucose
Post by: english on April 13, 2008, 02:57:10 PM

Quote from: Borek on April 13, 2008, 02:47:17 PM

Quote from: Yggdrasil on April 13, 2008, 02:35:46 PM

oxidation

Quote

in which the aldehyde group of glucose is reduced

:D

Haha  ;D

Title: Re: The structure for the oxidised form of glucose
Post by: Yggdrasil on April 13, 2008, 03:27:02 PM

My signature should contain the disclaimer "Notice: post may contain catastrophic typographical errors"

Title: Re: The structure for the oxidised form of glucose
Post by: AWK on April 14, 2008, 01:26:13 AM

Quote from: boostar on April 13, 2008, 08:12:30 AM

Hi guys, I hope this is in the right form. I am wondering what the structure for the oxidized form of glucose would be? I am thinking that an oxygen is added somewhere, but I don't know where.

http://www.greenspirit.org.uk/resources/glucose.gif

Any help would be appreciated.

Preserving six atoms chain you can oxidize aldehyde group or terminal CH2OH group or both