primase

Pritelivir (BAY 57-1293) (BAY 57-1293) is a potent helicase-primase inhibitor with active against HSV-1 and HSV-2 (IC50: 20 nM).

Amenamevir (ASP2151) is a novel helicase-primase inhibitor that is active against varicella-zoster virus and herpes simplex virus types 1 and 2 (EC50: 14 ng/mL).

DNA Primase Inhibitor-13 is a novel inhibitor of DNA primase.

Fludarabine Phosphate (NSC 312887 Phosphate) is the phosphate salt of a fluorinated nucleotide antimetabolite analog of the antiviral agent vidarabine (ara-A) with antineoplastic activity. Fludarabine phosphate is rapidly dephosphorylated to 2-fluoro-ara-A and then phosphorylated intracellularly by deoxycytidine kinase to the active triphosphate, 2-fluoro-ara-ATP. This metabolite may inhibit DNA polymerase alpha, ribonucleotide reductase, and DNA primase, thereby interrupting DNA synthesis and inhibiting tumor cell growth.

Pritelivir mesylate hydrate is active against herpes simplex virus types 1 and 2 (IC50: 0.02 μM against HSV1-2). Pritelivir mesylate hydrate is an inhibitor of the viral helicase-primase complex. Pritelivir mesylate hydrate shows antiviral activity in vit

Pritelivir mesylate is active against herpes simplex virus types 1 and 2 (IC50: 0.02 μM against HSV1-2). Pritelivir mesylate is an inhibitor of the viral helicase-primase complex. Pritelivir mesylate shows antiviral activity in vitro and in animal models

Purine riboside-5'-O-triphosphate sodium is an active metabolite of Nebularine and acts as an inhibitor of DNA primase ATP and GTP polymerization activities, with IC50 values of 35 µM and 28 µM, respectively. It also inhibits calmodulin-dependent protein kinase II (CaMKII), with a Ki value of 590 µM.

HSV-1-IN-1 (compound 1b) is a candidate drug for HSV-1 (IC50=0.5 nM) and HSV-2 (IC50=16 nM) infections. It inhibits the helicase-primase complex to prevent viral replication, thus suppressing HSV infection.

HSV-1/HSV-2-IN-3 inhibits the helicase-primase complex of herpes simplex virus (HSV), interfering with the crucial processes of DNA unwinding and primer synthesis necessary for viral genome replication. In gD immunofluorescence assays containing 2% FBS, its EC50 against HSV-2 is 7.0 nM, while in assays with 10% human serum, the EC50 is 57.5 nM. Within qPCR replication analysis, the compound demonstrates an EC50 of 1.1 nM. Additionally, HSV-1/HSV-2-IN-3 exhibits strong selectivity against off-target interactions with human carbonic anhydrase (IC50 for hCA II ≈ 2.9 µM, and > 35 µM for hCA I). This compound is applicable in anti-HSV research.

Fludarabine triphosphate (F-ara-ATP) trisodium, the principal metabolite of Fludarabine, is a potent, noncompetitive, and specific inhibitor of DNA primase with an IC50 value of 2.3 μM and a Ki of 6.1 μM. It obstructs DNA synthesis by hindering DNA primase and primer RNA formation, while also inhibiting ribonucleotide reductase and DNA polymerase activities, effectively inducing cellular apoptosis [1] [2].

RA-0002323-01 is an antiviral agent targeting the viral helicase-primase (helicase-primase), derived from the Heli-SMACC (small molecule assembly targeting helicase).