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A class of compounds formed by condensation of a phenolic carboxylic acid (such as gallic acid) with a similar compound, the reaction being between the carboxylic acid group on one molecule and a phenolic OH group on the other. Depsides are similar to esters, except that the OH group is linked directly to an aromatic ring. In such compounds, the –O-CO– group is called a depside linkage. Depsides are found in tannins and other natural products.

Subjects: Chemistry.

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