Pyrazofurin (pyrazomycin) is a natural product found in ''

Streptomyces candidus ''Streptomyces candidus'' is a bacterium species from the genus of ''Streptomyces'' which has been isolated from soil in Russia. ''Streptomyces candidus'' produces lemonomycin, enterocin, pyrazofurin and avoparcin. See also * List of Streptom ...

'', which is a

nucleoside Nucleosides are glycosylamines that can be thought of as nucleotides without a phosphate group. A nucleoside consists simply of a nucleobase (also termed a nitrogenous base) and a five-carbon sugar ( ribose or 2'-deoxyribose) whereas a nucleoti ...

analogue related to

ribavirin Ribavirin, also known as tribavirin, is an antiviral medication used to treat RSV infection, hepatitis C and some viral hemorrhagic fevers. For hepatitis C, it is used in combination with other medications such as simeprevir, sofosbuvir, ...

. It has

antibiotic An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting pathogenic bacteria, bacterial infections, and antibiotic medications are widely used in the therapy, ...

antiviral Antiviral drugs are a class of medication used for treating viral infections. Most antivirals target specific viruses, while a broad-spectrum antiviral is effective against a wide range of viruses. Unlike most antibiotics, antiviral drugs do no ...

and anti-

cancer Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. These contrast with benign tumors, which do not spread. Possible signs and symptoms include a lump, abnormal bl ...

properties but was not successful in human

clinical trial Clinical trials are prospective biomedical or behavioral research studies on human subject research, human participants designed to answer specific questions about biomedical or behavioral interventions, including new treatments (such as novel v ...

s due to severe side effects. Nevertheless, it continues to be the subject of ongoing research as a potential

drug of last resort A drug of last resort (DoLR), also known as a heroic dose, is a pharmaceutical drug which is tried after all other drug options have failed to produce an adequate response in the patient. Drug resistance, such as antimicrobial resistance or antin ...

, or a template for improved synthetic derivatives.

References

Antiviral drugs Tetrahydrofurans Pyrazolecarboxamides Polyols {{antiinfective-drug-stub