2Dehydro3deoxyDgluconic
2dehydro-3-deoxy-D-arabino-hexosonic acid, often abbreviated as DDHA, is a monosaccharide derivative. It is characterized by the presence of a double bond between the second and third carbon atoms and the absence of a hydroxyl group at the third carbon atom of a six-carbon sugar backbone. The "arabino" designation refers to the specific configuration of the hydroxyl groups on the remaining chiral centers, indicating a D-sugar.
DDHA is a component of certain bacterial polysaccharides, notably in the cell wall of *Actinobacillus actinomycetemcomitans*,
While not a common sugar found in the human diet or metabolism, DDHA's biological significance lies primarily