Molecule

DB00426 

S2467 

Research Area: Infection
Biological Activity:
Famciclovir(Famvir) is a guanine analogue antiviral drug used for the treatment of various herpesvirus infections, most commonly for herpes zoster (shingles). It is a prodrug form of penciclovir with improved oral bioavailability. Use of Famciclovir in this manner, known as post-exposure prophylaxis, has been shown to reduce the amount of latent virus in the neural ganglia. [1][2]

F7932 

Biochem/physiol Actions
Famciclovir is an antiretroviral guanosine analog used to treat herpesvirus infections and hepatitis B. Famciclovir is rapidly converted to penciclovir. Viral thymidine kinase phosphorylates penciclovir to a monophosphate form that celular kinases convert in turn to penciclovir triphosphate. Penciclovir triphosphate competitively inhibits viral DNA polymerase and thus viral replication. Prolonged administration can lead to resistance; it is often manifested as selection of pre-existing resistant strains with mutations in the reverse transcriptase domain of the DNA polymerase gene.1
Other Notes
Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. F7932.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.

F101125 

Used as an antiviral. Prodrug of Penciclovir (P221500).

CHEBI:4974 

2-Amino-9H-purine in which the hydrogen at position 9 is substituted by a 4-acetoxy-3-(acetoxymethyl)but-1-yl group. A prodrug of the antiviral penciclovir, it is used for the treatment of acute herpes zoster (shingles), for the treatment or suppression of recurrent genital herpes in immunocompetent patients and for the treatment of recurrent mucocutaneous herpes simplex infections in HIV infected patients.