Inhibits the activity of prostaglandins.

Oxazepines are a class of benzodiazepine-like drugs that have a oxazepine ring in their chemical structure, and are used as anticonvulsants and anxiolytics due to their ability to modulate GABAergic neurotransmission.

Compounds based on a 7-membered heterocyclic ring including an oxygen. They can be considered a medium ring ether. A natural source is the MONTANOA plant genus. Some dibenzo-dioxepins, called depsidones, are found in GARCINIA plants.

Organic compounds containing the carboxy group (-COOH). This group of compounds includes amino acids and fatty acids. Carboxylic acids can be saturated, unsaturated, or aromatic.

Four fused benzyl rings with three linear and one angular, that can be viewed as a benzyl-phenanthrenes. Compare with NAPHTHACENES which are four linear rings.

Compounds consisting of two or more fused ring structures.

Acridines are heterocyclic aromatic organic compounds containing two nitrogen atoms at positions 1 and 3 of a planar, unsaturated ring system, which have been widely used in chemotherapy and have also found applications in dye industries and fluorescence microscopy.