Ketohexose

A ketohexose is a ketone-containing hexose (a six-carbon monosaccharide). Ketohexoses have three chiral centers, so 8 (23 = 8) different stereoisomers are possible.

The 4 D-ketohexoses are:

CH2OH      CH2OH         CH2OH        CH2OH |          |             |            |  C=O         C=O           C=O          C=O |          |             |            | HC-OH     HO-CH           HC-OH      HO-CH |          |             |            | HC-OH       HC-OH       HO-CH        HO-CH |          |             |            | HC-OH       HC-OH         HC-OH        HC-OH |          |             |            |  CH2OH       CH2OH         CH2OH        CH2OH D-Psicose   D-Fructose   D-Sorbose    D-Tagatose

Hexosen