Quinones

The quinones are a class of organic compounds that are formally "derived from aromatic compounds [such as benzene or naphthalene] by conversion of an even number of –CH= groups into –C(=O)– groups with any necessary rearrangement of double bonds", resulting in "a fully conjugated cyclic dione structure". The archetypical member of the class is 1,4-benzoquinone or cyclohexadienedione, often called simply "quinone" (thus the name of the class). Other important examples are 1,2-benzoquinone ('''ortho-quinone'''), 1,4-naphthoquinone and 9,10-anthraquinone.

chemical compound

Acenaphthoquinone is a quinone derived from acenaphthene. It is a water-insoluble yellow solid. It is a precursor to some agrichemicals and dyes.

thumb|right|Chemical structure of mitomycin C The mitomycins are a family of aziridine-containing natural products isolated from Streptomyces caespitosus or Streptomyces lavendulae. They include mitomycin A, mitomycin B, and mitomycin C. When the name mitomycin occurs alone, it usually refers to mitomycin C, its international nonproprietary name. Mitomycin C is used as a medicine for treating various disorders associated with the growth and spread of cells.

chemical compound

NBQX (2,3-dioxo-6-nitro-7-sulfamoyl-benzo[f]quinoxaline) is an antagonist of the AMPA receptor.

Pixantrone (rINN; trade name Pixuvri) is an experimental antineoplastic (anti-cancer) drug, an analogue of mitoxantrone with fewer toxic effects on cardiac tissue. It acts as a topoisomerase II poison and intercalating agent. The code name BBR 2778 refers to pixantrone dimaleate, the actual substance commonly used in clinical trials.

Fagopyrin is a phototoxic substance found in the flowers of buckwheat (Fagopyrum esculentum). Their chemical structure contains a naphthodianthrone skeleton similar to that of hypericin. After exposure, fagopyrin can cause sensitivity to light, also called fagopyrism, an itchy skin rash.

Phanquinone is an organic compound with the formula . It is derived by oxidation of 4,7-phenanthroline.

Perzinfotel (EAA-090) is a drug which acts as a potent NMDA antagonist. It has neuroprotective effects and has been investigated for the treatment of stroke, but lacks analgesic effects. Nevertheless, it shows a good safety profile compared to older drugs, although further development of this drug has been discontinued.

Phenanthrenedione is a quinone derivative of a polycyclic aromatic hydrocarbon. It is an orange, water-insoluble solid.

Haematopodin is the more stable breakdown product of Haematopodin B. Both compounds are found in the mushroom Mycena haematopus, although haematopodin only occurs in trace amounts in fresh fruit bodies. Similar pigments (with the 1,3,4,5-tetrahydropyrrolo[4,3,2-de]quinoline structure), known as batzellins and damirones, have been found in sea sponges. A chemical synthesis for haematopodin was reported in 1996. Key steps in the synthesis involved the addition of 3-[(2,4-dimethoxybenzyl)amino]-1-propanol to the indolo-6,7-quinone and cyclization of the resulting adduct with trifluoroacetic acid.

Dibromoanthanthrone is a scarlet or orange-red-hue synthetic organic colourant.

group of stereoisomers