Orthopoxvirus Inhibitor

Cytarabine, a nucleoside analog, causes S phase cell cycle arrest and inhibits DNA polymerase. Cytarabine inhibits DNA synthesis with an IC₅₀ of 16 nM. Cytarabine has antiviral effects against HSV. Cytarabine shows anti-orthopoxvirus activity.

Thymidine, a specific precursor of deoxyribonucleic acid, is used as a cell synchronizing agent. Thymidine is a DNA synthesis inhibitor that can arrest cell at G1/S boundary, prior to DNA replication.

Hydroxyurea is a cell apoptosis inducer that inhibit DNA synthesis through inhibition of ribonucleotide reductase. Hydroxyurea shows anti-orthopoxvirus activity.

Rifampicin is a potent and broad spectrum antibiotic against bacterial pathogens. Rifampicin has anti-influenza virus activities. Rifampicin shows anti-orthopoxvirus activity.

Ribavirin (ICN-1229) is an antiviral agent against a broad spectrum of viruses including HCV, HIVl, and RSV. Ribavirin also has anti-orthopoxvirus and anti-variola activities.

Cidofovir-¹³C,¹⁵N₂ disodium (GS 0504-¹³C,¹⁵N₂ disodium) is the ¹³C- and ¹⁵N-labeled Cidofovir disodium (HY-167911). Cidofovir sodium is an acyclic monophosphate nucleotide analogue and CMV inhibitor with antiviral activity. Cidofovir sodium inhibits cytomegalovirus (CMV) replication by selectively inhibiting viral DNA polymerase. Cidofovir sodium induces apoptosis and can be used in studies of AIDS cytomegalovirus retinitis, herpes, and cancer. Cidofovir sodium also has anti-orthopoxvirus and anti-variola activities.

Cytarabine-¹³C,¹⁵N₂ (Cytosine β-D-arabinofuranoside-¹³C,¹⁵N₂) is the ¹³C- and ¹⁵N-labeled Cytarabine (HY-13605). Cytarabine, a nucleoside analog, causes S phase cell cycle arrest and inhibits DNA polymerase. Cytarabine inhibits DNA synthesis with an IC₅₀ of 16 nM. Cytarabine has antiviral effects against HSV. Cytarabine shows anti-orthopoxvirus activity.

Mitoxantrone is a potent topoisomerase II inhibitor. Mitoxantrone also inhibits protein kinase C (PKC) activity with an IC₅₀ of 8.5 μM. Mitoxantrone induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone shows antitumor activity. Mitoxantrone also has anti-orthopoxvirus activity with EC₅₀s of 0.25 μM and and 0.8 μM for cowpox and monkeypox, respectively.

Aphidicolin is an inhibitor of DNA polymerase α and δ, prevents mitotic cell division by interfering DNA polymerase activity. Aphidicolin is an antibiotic produced by mold Cephalosporium aphidicola, inhibits cellular deoxyribonucleic acid synthesis and the growth of herpes simplex virus. Aphidicolin exhibits anti-orthopoxvirus activity and potentiates apoptosis induced by arabinosyl nucleosides in a human promyelocytic leukemia cell line.

Levofloxacin ((-)-Ofloxacin) is an orally active antibiotic and is active against both Gram-positive and Gram-negative bacteria. Levofloxacin inhibits the DNA gyrase and topoisomerase IV. Levofloxacin can be used for chronic periodontitis, airway inflammation and BK Viremia research. Levofloxacin shows anti-orthopoxvirus activity.

3-Deazaneplanocin A (DZNep) is a potent histone methyltransferase EZH2 inhibitor. 3-Deazaneplanocin A is a potent S-adenosylhomocysteine hydrolase (AHCY) inhibitor. 3-Deazaneplanocin A shows anti-orthopoxvirus activity.

Carbenoxolone disodium is the active metabolite of Glycyrrhizic acid (HY-N0184) and the inhibitor of human 11β-HSD and bacterial 3α, 20β-HSD. Carbenoxolone disodium is an uncoupling agent for gap junctions and a potent inhibitor of Vaccinia virus replication. Carbenoxolone disodium is used for the study of peptic, esophageal and oral ulceration and inflammation. Carbenoxolone disodium inhibits Vaccinia virus replication.

3-Deazaneplanocin A hydrochloride (DZNep hydrochloride) is a potent histone methyltransferase EZH2 inhibitor. 3-Deazaneplanocin A hydrochlorideis a potent S-adenosylhomocysteine hydrolase (AHCY) inhibitor. 3-Deazaneplanocin A hydrochloride also has anti-orthopoxvirus and anti-variola activities.

Coumermycin A1 is a JAK2 signal activator. Coumermycin A1 inhibits DNA Gyrase which thereby inhibits cell division in bacteria. Coumermycin A1 shows anti-orthopoxvirus activity.

Cidofovir (GS 0504) is an acyclic monophosphate nucleotide analogue and CMV inhibitor with antiviral activity. Cidofovir inhibits cytomegalovirus (CMV) replication by selectively inhibiting viral DNA polymerase. Cidofovir induces apoptosis and can be used in studies of AIDS cytomegalovirus retinitis, herpes, and cancer. Cidofovir also has anti-orthopoxvirus and anti-variola activities.

Idoxuridine (5-Iodo-2′-deoxyuridine, 5-IUdR, IdUrd) is an iodinated thymidine analogue that competitively inhibits phosphorylases. Idoxuridine can inhibit viral activity, particularly viral eye infections, including herpes simplex keratitis, by inhibiting DNA polymerase and affecting viral replication. Idoxuridine against feline herpesvirus has the IC₅₀ value of 4.3 μM. Idoxuridine shows anti-orthopoxvirus activity.

Mitoxantrone dihydrochloride is a potent topoisomerase II inhibitor. Mitoxantrone dihydrochloride also inhibits protein kinase C (PKC) activity with an IC₅₀ of 8.5 μM. Mitoxantrone dihydrochloride induces apoptosis of B-CLL (B-chronic lymphocytic leukaemia) cells. Mitoxantrone dihydrochloride shows antitumor activity. Mitoxantrone dihydrochloride also has anti-orthopoxvirus activity with EC₅₀s of 0.25 μM and and 0.8 μM for cowpox and monkeypox, respectively.

Novobiocin (Albamycin) sodium is a potent and orally active antibiotic. Novobiocin sodium also is a DNA gyrase inhibitor and a heat shock protein 90 (Hsp90) antagonist. Novobiocin sodium has the potential for the research of highly beta-lactam-resistant pneumococcal infections. Novobiocin sodium shows anti-orthopoxvirus activity.

Amantadine (1-Adamantanamine) is an orally avtive and potent antiviral agent with activity against influenza A viruses. Amantadine inhibits several ion channels such as NMDA and M2, and also inhibits Coronavirus ion channels. Amantadine also has anti-orthopoxvirus and anticancer activity. Amantadine can be used for Parkinson's disease, postoperative cognitive dysfunction (POCD) and COVID-19 research.

Novobiocin (Albamycin) is a potent and orally active antibiotic. Novobiocin also is a DNA gyrase inhibitor and a heat shock protein 90 (Hsp90) antagonist. Novobiocin has the potential for the research of highly beta-lactam-resistant pneumococcal infections. Novobiocin shows anti-orthopoxvirus activity.