Pyrimidines

Pyrimidine (; ) is an aromatic, heterocyclic, organic compound similar to pyridine (). One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has nitrogen atoms at positions 1 and 3 in the ring. The other diazines are pyrazine (nitrogen atoms at the 1 and 4 positions) and pyridazine (nitrogen atoms at the 1 and 2 positions).

Trimethoprim (TMP) is an antibiotic used mainly in the treatment of bladder infections. Other uses include for middle ear infections and travellers' diarrhoea. With sulfamethoxazole or dapsone it may be used for Pneumocystis pneumonia in people with HIV/AIDS. It is taken orally (swallowed by mouth).

Molnupiravir, sold under the brand name Lagevrio, is an antiviral medication that inhibits the replication of certain RNA viruses. It is used to treat COVID19 in those infected by SARS-CoV-2. It is taken by mouth.

Rosuvastatin, sold under the brand name Crestor among others, is a statin medication, used to prevent cardiovascular disease in those at high risk and treat abnormal lipids. It is recommended to be used with dietary changes, exercise, and weight loss. It is taken orally (by mouth).

chemical compound

Pyrantel is a medication used to treat a number of parasitic worm infections. This includes ascariasis, hookworm infections, enterobiasis (pinworm infection), trichostrongyliasis, and trichinellosis. It is taken by mouth.

Sulfadiazine is an antibiotic. Used together with pyrimethamine, a dihydrofolate reductase inhibitor, it is the treatment of choice for toxoplasmosis, which is caused by a protozoan parasite. It is a second-line treatment for otitis media, prophylaxis of rheumatic fever, chancroid, chlamydia, and infections by Haemophilus influenzae. It is also used as adjunct therapy for chloroquine-resistant malaria and several forms of bacterial meningitis. It is taken by mouth. Sulfadiazine is available in multiple generic tablets of 500 mg. For urinary tract infections, the usual dose is 4 to 6 grams

Diazinon (IUPAC name: '''O,O-Diethyl O-[4-methyl-6-(propan-2-yl)pyrimidin-2-yl] phosphorothioate, INN - Dimpylate'''), a colorless to dark brown liquid, is a thiophosphoric acid ester developed in 1952 by Ciba-Geigy, a Swiss chemical company (later Novartis and then Syngenta). It is a nonsystemic organophosphate insecticide formerly used to control cockroaches, silverfish, ants, and fleas in residential, non-food buildings. Diazinon was heavily used during the 1970s and early 1980s for general-purpose gardening use and indoor pest control. A bait form was used to control scavenger wasps in the

Propylthiouracil (PTU) is a medication used to treat hyperthyroidism. This includes hyperthyroidism due to Graves' disease and toxic multinodular goiter. In a thyrotoxic crisis it is generally more effective than methimazole. Otherwise it is typically only used when methimazole, surgery, and radioactive iodine is not possible. It is taken by mouth.

Voriconazole, sold under the brand name Vfend among others, is an antifungal medication used to treat a number of fungal infections. This includes aspergillosis, candidiasis, coccidioidomycosis, histoplasmosis, penicilliosis, and infections by Scedosporium or Fusarium. It can be taken by mouth or used by injection into a vein.

chemical compound

Murexide (NH4C8H4N5O6, or C8H5N5O6·NH3), also called ammonium purpurate or MX, is the ammonium salt of purpuric acid. It is a purple solid that is soluble in water. The compound was once used as an indicator reagent. Aqueous solutions are yellow at low pH, reddish-purple in weakly acidic solutions, and blue-purple in alkaline solutions.

chemical compound

Alloxan, sometimes referred to as alloxan monohydrate, is an organic compound with the formula . It is classified as a derivative of pyrimidine. The anhydrous derivative is also known, as well as a dimeric derivative. These are some of the earliest known organic compounds. They exhibit a variety of biological activities.

Sulfadoxine (also spelled sulphadoxine) is an ultra-long-lasting sulfonamide used in combination with pyrimethamine to treat malaria.

Hexetidine is an anti-bacterial and anti-fungal agent commonly used in both veterinary and human medicine. It is a local anesthetic, astringent and deodorant and has antiplaque effects.

Rilpivirine, sold under the brand name Edurant among others, is a medication, developed by Tibotec, used for the treatment of HIV/AIDS. It is a second-generation non-nucleoside reverse transcriptase inhibitor (NNRTI) with higher potency, longer half-life and reduced side-effect profile compared with older NNRTIs such as efavirenz.

Bosentan, sold under the brand name Tracleer among others, is a dual endothelin receptor antagonist medication used in the treatment of pulmonary artery hypertension (PAH).

Osimertinib, sold under the brand name Tagrisso, is a medication used to treat non-small-cell lung carcinomas with specific mutations. It is a third-generation epidermal growth factor receptor tyrosine kinase inhibitor.

Riociguat, sold under the brand name Adempas, is a medication by Bayer that is a stimulator of soluble guanylyl cyclase (sGC). It is used to treat two forms of pulmonary hypertension (PH): chronic thromboembolic pulmonary hypertension (CTEPH) and pulmonary arterial hypertension (PAH). Riociguat constitutes the first drug of the class of sGC stimulators. The drug has a half-life of 12 hours and will decrease dyspnea associated with pulmonary arterial hypertension.

Moxonidine (INN) is a new-generation alpha-2/imidazoline receptor agonist antihypertensive drug licensed for the treatment of mild to moderate essential hypertension. It may have a role when thiazides, beta-blockers, ACE inhibitors, and calcium channel blockers are not appropriate or have failed to control blood pressure. In addition, it demonstrates favourable effects on parameters of the insulin resistance syndrome, apparently independent of blood pressure reduction. It is also a growth hormone releaser. It is manufactured by Solvay Pharmaceuticals (acquired by Abbott in 2009) under the bran

Sulfadimidine or sulfamethazine is a sulfonamide antibacterial.

Ribociclib, sold under the brand name Kisqali, is a medication used for the treatment of certain kinds of breast cancer. Ribociclib is a kinase inhibitor. It was developed by Novartis and Astex Pharmaceuticals.

Sulfamerazine is a sulfonamide antibacterial. ==Synthesis== thumb|center|700px|Sulfamerazine synthesis:

Sulfadimethoxine (or sulphadimethoxine, trade names Di-Methox or Albon) is a long-lasting sulfonamide antimicrobial medication used in veterinary medicine. It is used to treat many infections, including respiratory, urinary tract, enteric, and soft tissue infections and can be given as a standalone or combined with ormetoprim to broaden the target range. Like all sulfamides, sulfadimethoxine inhibits bacterial synthesis of folic acid by acting as a competitive inhibitor against PABA. It is the most common drug prescribed to dogs who have coccidiosis.

Urapidil is a sympatholytic antihypertensive drug. It acts as an α1-adrenoceptor antagonist and as an 5-HT1A receptor agonist. Although an initial report suggested that urapidil was also an α2-adrenoceptor agonist, this was not substantiated in later studies that demonstrated it was devoid of agonist actions in the dog saphenous vein and the guinea-pig ileum. Unlike some other α1-adrenoceptor antagonists, urapidil does not elicit reflex tachycardia, and this may be related to its weak β1-adrenoceptor antagonist activity, as well as its effect on cardiac vagal drive. Urapidil is currently not a

Ambrisentan, sold under the brand name Letairis among others, is a drug used for the treatment of pulmonary hypertension. It is an endothelin receptor antagonist.

Heptabarb (INN; Eudan, Medapan, Medomin, Noctyn), also known as heptabarbitone (BAN) or heptabarbital, is a sedative and hypnotic drug of the barbiturate family. It was used in Europe for the treatment of insomnia from the 1950s onwards, but has since been discontinued.

Sulbutiamine sold under the brand names Arcalion, Enerion, and Sulbuxin is a synthetic derivative of thiamine (vitamin B1). In France, it is used to treat symptoms of weakness or fatigue. In Uruguay, it is prescribed when there is thiamine deficiency, mainly in patients with asthenia, overwork, apathy, depressive states, memory disorders, and iatrogenic disorders of wakefulness. It is also sold as a dietary supplement. Sulbutiamine was discovered in Japan as part of an effort to develop useful thiamine derivatives.

Crimidine is a convulsant poison used as a rodenticide. Crimidine was originally known by its product name, Castrix. It was originally produced in the 1940s by the conglomerate, IG Farben. It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities. It is also no longer used in the United States as a rodenticide, but is still used to this day in other coun

Macitentan, sold under the brand name Opsumit, is an endothelin receptor antagonist developed by Actelion and approved for the treatment of pulmonary arterial hypertension (PAH). Macitentan is a dual endothelin receptor antagonist, meaning that it acts as an antagonist of two endothelin (ET) receptor subtypes, ETA and ETB. However, macitentan has a 50-fold increased selectivity for the ETA subtype compared to the ETB subtype.

2-Thiouracil is a chemical derivative of uracil in which the oxygen atom in the 2-position of the ring is substituted by sulfur. It is classified as a thiourea.

The chemical reactions and pathways involving pyrimidine nucleotides

Azoxystrobin is a broad spectrum systemic fungicide widely used in agriculture to protect crops from fungal diseases. It was first marketed in 1996 using the brand name Amistar and by 1999 it had been registered in 48 countries on more than 50 crops. In the year 2000 it was announced that it had been granted UK Millennium product status.

Sulfisomidine (INN), also known as sulphasomidine (BAN until 2003), sulfamethin and sulfaisodimidine, is a sulfonamide antibacterial. It is closely related to sulfadimidine.

Vericiguat, sold under the brand name Verquvo, is a medication used to reduce the risk of cardiovascular death and hospitalization in certain patients with heart failure after a recent acute decompensation event. It is taken by mouth. Vericiguat is a soluble guanylate cyclase (sGC) stimulator.

chemical compound

Azanidazole is a nitroimidazole derivative used in gynecology for the treatment of trichomonal infections.

Oxantel is an anthelmintic. It has typically been used in human and animal medicine as a treatment for intestinal worms. It has also been shown to inhibit fumarate reductase in some pathogenic bacteria.

chemical compound

Chemicals that inhibit the use of a metabolite

Nimustine () is a nitrosourea alkylating agent.

chemical compound

Vicriviroc, previously named SCH 417690 and SCH-D, is a pyrimidine CCR5 entry inhibitor of HIV-1. It was developed by the pharmaceutical company Schering-Plough. Merck decided to not pursue regulatory approval for use in treatment-experienced patients because the drug did not meet primary efficacy endpoints in late stage trials. Clinical trials continue in patients previously untreated for HIV.

Sulfametoxydiazine (INN) or sulfamethoxydiazine (USAN: sulfameter) is a long-acting sulfonamide antibacterial. It is used as a leprostatic agent and in the treatment of urinary tract infections.

Febarbamate (INN; Solium, Tymium), also known as phenobamate, is an anxiolytic and tranquilizer of the barbiturate and carbamate families which is used in Europe by itself and as part of a combination drug formulation called tetrabamate.

Sulfaperin (or sulfaperine) is a sulfonamide antibacterial.

Mocetinostat (MGCD0103) is a benzamide histone deacetylase inhibitor undergoing clinical trials for treatment of various cancers including follicular lymphoma, Hodgkin's lymphoma and acute myelogenous leukemia.

Amprolium is the organic compound sold as a coccidiostat used in poultry. It has many International Nonproprietary Names. __TOC__

Aminocyclopyrachlor (AMCP) is a selective, low-toxicity, auxin-mimicking herbicide that provides pre- and post-emergent control of broadleaf weeds on several non-food use sites including rights of way, wildlife management areas, recreational areas, turf/lawns, golf courses and sod farms. It was conditionally registered as Imprelis by DuPont in August 2010, and first used in Fall 2010, though used experimentally since 2008 or before.

Tetrabarbital (INN; Butysal, Butysedal, Tetramal) is a barbiturate derivative used as a hypnotic.

Fedratinib, sold under the brand name Inrebic, is an anti-cancer medication used to treat myeloproliferative diseases including myelofibrosis. It is used in the form of fedratinib hydrochloride capsules that are taken by mouth. It is a semi-selective inhibitor of Janus kinase 2 (JAK-2). It was approved by the FDA on 16 August 2019.

Relugolix, sold under the brand names Orgovyx and Relumina among others, is a gonadotropin-releasing hormone antagonist (GnRH receptor antagonist) medication which is used in the treatment of prostate cancer, uterine fibroids and endometriosis. It is taken by mouth.

chemical compound

UBP-302 is a highly selective kainate receptor antagonist used in the study of many neurological processes. It is active at micromolar concentration within an in vitro preparation and specifically targets the GluK1 (iGluR5) subunit of the receptor. This compound was developed at the University of Bristol.

Benzylthiouracil (BTU) is an antithyroid preparation. It is a thioamide, closely related to propylthiouracil.

Sulfametomidine (or sulfamethomidine) is a sulfonamide antibacterial.

Abafungin (INN) is a broad-spectrum arylguanidines-class antifungal agent with a novel mechanism of action for the treatment of dermatomycoses.

Fenarimol, sold under the tradenames Bloc, Rimidin and Rubigan, is a fungicide which acts against rusts, blackspot and mildew fungi. It is used on ornamental plants, trees, lawns, tomatoes, peppers, eggplants, cucumbers and melons. It is mainly used to control powdery mildew. It works by inhibiting the fungus's biosynthesis of important steroid molecules (via blockade of the CYP51 enzyme).