Depside

Depsides ( " soften " to Greek dépsein, " knead " ) are condensation products of aromatic hydroxycarboxylic acids in which the carboxyl group of an acid with a phenolic hydroxyl group of the other is esterified ( didepsides ); it may be involved in three ( Tridepside ) or more hydroxycarboxylic acid molecules.

Occurrence

Depsides come in lichens (eg in Lecanoromycetes, such as oak moss or Lecanora conizaeoides ) than vegetable tanning agents (eg savory; digallic ) in rosemary ( rosmarinic acid, widely distributed in plants ) or coffee ( chlorogenic acid, also in a number of plants ) before.

Biological effect

Depsides act molluscicidally against freshwater snails and in concentrations of 10-3 mol · l-1 growth inhibitory to plant.

Swell

• J. Falbe, M. Regitz (ed.): Encyclopedia of chemistry Rompp. 10th edition. Thieme, Stuttgart and New York from 1996 to 1999.