Nucleótidos

L-Guanosine is an enantiomer of adenosine. It has been shown to be effective in the treatment of autoimmune diseases and viruses, such as HIV. L-Guanosine is activated by phosphorylation, which leads to its binding with DNA and inhibition of viral replication. L-Guanosine is also a potent inhibitor of mammalian cell proliferation. It binds to the enzyme adenosyltransferase, thereby inhibiting the production of nucleotides, which are necessary for DNA synthesis. This inhibition causes cell death due to lack of DNA synthesis and protein production.

5'-O-DMT-2'-O-methylcytidine is a monophosphate nucleoside of cytidine. It is used as an antiviral agent and has been shown to have anticancer effects in vitro. 5'-O-DMT-2'-O-methylcytidine is synthesized by modification of the natural deoxyribonucleosides, which are then phosphoramidited to form a 5'-O-DMT-2'-O-methylcytidine monophosphate. The synthesis process also produces diphosphate and triphosphate forms of the nucleoside, which can be used for other purposes.

Glycinamide ribonucleotide (GAR) is a reactive metabolite that is formed from glycinamide, which is an intermediate in the synthesis of purines. GAR has been shown to bind to intracellular targets and inhibit their enzyme activities. GAR has been shown to inhibit the activity of enzymes that are involved in the synthesis of purines, such as ribonucleotides and nucleoside phosphates. These enzymes have been found in human tissues. GAR also inhibits the polymerase chain reaction (PCR) by binding to DNA and inhibiting its replication. This drug has also been shown to be effective against bowel disease by binding to bacterial dna gyrase, dna topoisomerase, and rna synthesis.

C2-Methyladenosine is a x-ray crystal structure of the mutant strain of Mycobacterium tuberculosis that has an efficient method for binding to the substrate. The uptake of C2-methyladenosine by the wild type strain was found to be at least four times higher than that of adenosine. The analog was also shown to have pharmacokinetic properties in fat cells, which leads to a decrease in ATP levels.

N3-Methylcytidine methosulfate is a novel antiviral agent that inhibits the synthesis of DNA and RNA. It has been shown to be effective against hepatitis B virus, herpes simplex virus, varicella-zoster virus, human immunodeficiency virus, and cytomegalovirus. N3-Methylcytidine methosulfate was found to be active in a variety of animal models including mice and rats. This drug has anticancer properties in the treatment of leukemia, lymphoma, and breast cancer. The phosphoramidite derivative of N3-methylcytidine methosulfate is used as an activator for oligonucleotide synthesis.

N4-Ethenocytidine is a nucleoside analogue that has been synthesized and shown to be an effective inhibitor of the hepatitis C virus. N4-Ethenocytidine prevents the synthesis of viral RNA by attacking the 3'-hydroxyl group of uridine, which is involved in the formation of ribonucleotides. This compound can also inhibit rat liver microsomes through a hydrated attack on carbonyl groups. The reaction products are trifluoroacetic acid and chloride ions. N4-Ethenocytidine's fluorescence properties have been used to identify its reaction intermediates, which include uridylic acid and 4-etheno-N6-isopentenyladenosine.