nifurtimox Struktur

Nifurtimox

Bezeichnung:Nifurtimox

CAS-Nr23256-30-6

Englisch Name:nifurtimox

CBNumberCB3903922

SummenformelC10H13N3O5S

Molgewicht287.29

MOL-Datei23256-30-6.mol

Synonyma

Nifurtimox

Nifurtimox physikalisch-chemischer Eigenschaften

Schmelzpunkt	177-183°C
Siedepunkt	550.3±50.0 °C(Predicted)
Dichte	1.4716 (rough estimate)
Brechungsindex	1.6390 (estimate)
storage temp.	room temp
Löslichkeit	DMSO: ≥13mg/mL
pka	-1.01±0.40(Predicted)
Aggregatzustand	powder
Farbe	yellow to orange
Wasserlöslichkeit	33g/L(temperature not stated)
BCS Class	3
InChIKey	ARFHIAQFJWUCFH-IZZDOVSWSA-N

Sicherheit

WGK Germany	3
Toxizität	LD50 in mice, rats (mg/kg): 3720, 4050 by gavage (Hoffmann)

Gefahreninformationscode (GHS)

nifurtimox Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung
Nifurtimox is manufactured by Bayer and marketed under the trade name Lampits.It is a nitrofuran derivative that was developed specifically for the treatment of American trypanosomiasis (Chagas'disease) (Packachanian, 1957). Nifurtimox is one of two drugs approved for use in treatment of Chagasdisease. It was shown to be the most active and least toxic of this group of agents in preclinical studies and was evaluated in clinical trials in the 1960s and subsequently marketed for use in Chagas’ disease in Latin America in the late 1960s and early 1970s. Although the use of nifurtimox for Chagas’ disease has decreased with the availability of benznidazole, a potentially more active and less toxic agent, there has been a resurgence of interest in and use of nifurtimox for the treatment of second-stage human African trypanosomiasis (HAT)caused by Trypanosoma brucei gambiense.
Chemische Eigenschaften
Orange Solid
Verwenden
Antiprotozoal (Trypanosoma). Showing anti-Trypanosoma cruzi activity.
Verwenden
The nitrofuran nifurtimoxis the most effective drug against T. cruzi, being cidal against the trypomastigote and amastigote forms. It is active against both the extra- and intracellular form of the parasite. In combination with corticosteroids it has prevented myocardial inflammation and destroyed the parasites within the heart. Side effects of the drug tend to be mild and include nausea, vomiting, insomnia, nervous excitation, vertigo, and skin rashes. Cardiac symptoms are treated symptomatically. Benznidazole (2, C12H12N4O3, N-benzyl-2-nitro-1 imidazoleacetamide, RO 7-1051), an alternative drug, can prevent the spread of the parasites from one tissue to another although relapses are common. Primaquine can destroy the extracellular trypanosomes in the blood, but is not effective against the intracellular forms of the parasite.
Indications
Nifurtimox (Lampit) is a nitrofuran derivative whose likely mechanism of action for killing of trypanosomes is through the production of activated forms of oxygen. Nifurtimox is reduced to the nitro anion radical, which reacts with oxygen to produce superoxide and hydrogen peroxide. The free radical metabolites, an absence of parasite catalase, and a peroxide deficiency lead to lipid peroxidation and cell damage. This production of activated oxygen results in toxicity to the protozoal cells.
Definition
ChEBI: Nifurtimox is a nitrofuran antibiotic.
Allgemeine Beschreibung
Nifurtimox acts as a hypoxia-activated cytotoxin, which specifically kills clonogenic tumor cells under hypoxic conditions. It is used to treat Chagas disease and African trypanosomiasis. Nifurtimox inhibits neuroblastoma and medulloblastoma cell growth.
Pharmazeutische Anwendungen
A water-soluble synthetic compound available for oral use. It exhibits antibacterial activity typical of the group, but its most notable property is its activity against trypanosomes, especially Trypanosoma cruzi.
A plasma concentration of 0.5–1 mg/L is achieved c. 2 h after an oral dose of 15 mg/kg. The plasma half-life is 2–4 h. In common with other nitrofurans, it is rapidly and extensively metabolized, so that less than 1% of a dose is excreted intact in the urine. In renal failure, clearance is somewhat reduced but the half-life is unchanged.
Adverse events are common. Many patients experience anorexia, which may be combined with vomiting and abdominal pain. There may also be neurological reactions such as restlessness, insomnia, headache and disorientation.
It is used in the treatment of Chagas disease (South American trypanosomiasis). It has also found some use in the treatment of African sleeping sickness in combination with eflornithine.
Biochem/physiol Actions
Nifurtimox is a nitrofurane derivative used to treat diseases caused by trypanosomes. Nifurtimox was discovered empirically and its mechanism of action is unclear. It is believed that nifurtimox exerts its biological activity through the bioreduction of the nitro-group to a nitro-anion radical which undergoes redox-cycling with molecular oxygen.
Mechanism of action
The drug is given orally and is well absorbed from the gastrointestinal tract. It is rapidly metabolized, and only low levels are found in blood and tissues.The drug is excreted in the urine, primarily in the form of metabolites.
Clinical Use
Nifurtimox is trypanocidal and exerts an effect on the trypomastigote and amastigote forms of T. cruzi. It is effective in the treatment of the acute form of Chagas’ disease but is less effective once the disease becomes chronic. The drug is moderately well tolerated, and treatment generally lasts 3 to 4 months. Cure rates of 80 to 90% have been reported. Since much of the tissue damage caused by the disease is irreversible, early diagnosis and treatment are important. Nifurtimox has also been used in T. gambiense infection with meningoencephalopathic involvement.
Nebenwirkungen
Although side effects occur in approximately half the patients treated with nifurtimox, it is necessary to discontinue treatment in only a minority. Nausea, vomiting, abdominal pain, skin rashes, headache, insomnia, convulsions, and myalgia all have been reported.
Synthese
Nifurtimox, 1,1-dioxide 4-[(5-nitrofuryliden)amino]-3-methylthiomorpholine (37.4.7), is made by the following scheme. Interaction of 2-mercaptoethanol with propylene oxide in the presence of potassium hydroxide gives (2-hydroxyethyl)-(2-hydroxypropylsulfide) (37.4.3), which undergoes intramolecular dehydration using potassium bisulfate to make 2-methyl-1,4-oxithiane (37.4.4). Oxidation of this using hydrogen peroxide gives 2-methyl-1,4-oxithian-4,4-dioxide (37.4.5), which when reacted with hydrazine transforms to 4-amino-3-methyltetrahydro-1,4-thiazin-1,1-dioxide (37.4.6). Reacting this with 5-nitrofurfurol gives the corresponding hydrazone?athe desired nifurtimox.

Nifurtimox Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

23256-30-6, nifurtimox Verwandte Suche:

Send Inquriy