Nucleosides

L-Cytidine is a nucleoside that is found in the body, and is also used as a drug. It is a precursor to other nucleosides, such as cytidine triphosphate, which is involved in DNA synthesis and repair. L-Cytidine has been shown to be effective against HIV infection by inhibiting the activity of the enzyme ns3 protease. This inhibition prevents viral proteins from being released from cells and infecting other cells. L-Cytidine has also been shown to be an inhibitor of creatine kinase and glycosidation, two enzymes that are necessary for cell metabolism. L-Cytidine has also been shown to be reactive with halides, which may lead to unwanted side effects.

N2-Isobutyryl-9-(b-D-arabinofuranosyl)guanine is a monophosphate analog of guanine. It is a novel antiviral agent that inhibits the DNA polymerase and RNA polymerase activities of human immunodeficiency virus (HIV). The drug has a high purity and is available in large quantities.

N6-Benzoyl-5'-O-DMT-adenosine is a synthetic nucleoside with antiviral activity. It is an activator of viral DNA polymerase and inhibits viral replication by inhibiting DNA synthesis in the host cell. N6-Benzoyl-5'-O-DMT-adenosine has shown anticancer activity in tumor cells, which may be due to its ability to inhibit ribonucleotide reductase and diphosphate kinase.

6-O-Methyl-2'-deoxyinosine is a modified nucleoside that inhibits the synthesis of DNA and RNA. It is also an anticancer agent, inhibiting the growth of tumor cells by arresting the cell cycle at the G1 phase. 6-O-Methyl-2'-deoxyinosine is a phosphoramidite for use in solid phase synthesis of oligodeoxynucleotides (ODN). This product has high purity, good quality, novel structures and excellent stability.
6-O-Methyl-2'-deoxyinosine can be used to inhibit viral replication by preventing viral DNA from being replicated into double stranded DNA. The antiviral activity of 6-O-methyl 2'-deoxyinosine against HIV has been demonstrated in vitro and in vivo using monophosphate forms.

5-Methyl-2-thiouridine is a nucleotide that is found in the type strain of Escherichia coli. It has been shown to be an effective inhibitor of protein synthesis, with optimum concentration at 0.1 mM. 5-Methyl-2-thiouridine binds to the ribosome and inhibits its activity. 5-Methyl-2-thiouridine also interacts with human mitochondrial RNA and alters its structure, leading to an antibody response that protects against infection by the bacteria in question. This nucleotide has also been shown to inhibit bacterial growth in wastewater treatment plants. The chemical structures of 5-methyluridine are similar to those of uridine except for a methyl group on the second carbon atom (5 position). The presence of this methyl group confers increased water permeability and decreased kinetic energy on the molecule, which can be detected using nuclear magnetic resonance spectroscopy.

5’(R)-C-Methyl-5-methyluridine is an nucleoside and a ribonucleoside. It has antiviral, anticancer, and DNA modifying properties. This product is used in research to make phosphoramidites, diphosphates, and deoxyribonucleosides. 5’(R)-C-Methyl-5-methyluridine is also used in the production of modified oligonucleotides as well as other novel DNA compounds.

8-Bromoinosine is a potent chemical probe that can be used to study the molecular mechanism of cGMP-dependent protein kinase (PKG). 8-Bromoinosine reacts with the acceptor site in PKG, which is located at the base of the active site cleft. Electrons from hydrogen bond donor sites on 8-bromoadenosine are transferred to chloride ion and the resulting 8-bromoinosine chloride complex is an effective inhibitor of PKG. It has been shown that stereoselectivity plays a role in this reaction mechanism.