Nucléotides

2'-Deoxy-L-guanosine is a nucleoside that is used as an antibiotic. It inhibits protein synthesis, which leads to cell death. This drug has a high level of resistance against bacteria and is effective in the treatment of gram-positive bacteria. 2'-Deoxy-L-guanosine binds to the ribose phosphate backbone of DNA, phosphorylating it and preventing the base pairing of adenosine with thymine. This inhibits the production of DNA and RNA, leading to cell death. 2'-Deoxy-L-guanosine has been shown to be active against Listeria monocytogenes and Mycobacterium tuberculosis. The enantiomer form is more potent than the racemic mixture, but both forms are effective antibiotics.

2'-Deoxy-N2-isobutyrylguanosine (2'-DIBG) is an inhibitor of bacterial translocation that has been shown to inhibit the growth of several bacterial species. This drug binds to fatty acids, which are important for maintaining the integrity of the cell membrane and preventing bacterial translocation. 2'-DIBG also inhibits the production of reactive oxygen species by bacteria, which contributes to its antimicrobial activity. Inflammation can be reduced by inhibiting prostaglandin synthesis with 2'-DIBG. The inhibition of prostaglandin synthesis may be due to its ability to form acid conjugates with fatty acids and dicarboxylic acids, which are precursors for prostaglandins. 2'-DIBG also inhibits the synthesis of adenosine triphosphate (ATP) in bacteria, leading to a decrease in bacterial growth rate.

Inhibitor of heat shock protein Hsp60; immunosuppressant

2',5'-Dideoxycytidine is a nucleoside for use in a variety of applications

The nucleophilic opening of 2,2'-Anhydrouridine represents a novel synthetic approach for elaborating the ring of nucleosides. For example, compounds such as 2-amino-, 2-fluoro- and 2-phenylseleno-2-deoxyuridines are prepared from the nucleophilic opening of 2,2'-Anhydrouridine.Â2,2'-Anhydrouridine inhibits uridine phosphorylase, a key enzyme targeted by some antitumor drugs.

8-Azidoadenosine 3',5'-cyclic monophosphosphate is used for nucleotide labelling via a click reaction involving the azide moiety and a terminal alkyne conjugated to a label. The reaction generates a stable nucleotide labelled adduct containing a triazole link.

2'-Deoxy-8-oxoguanosine (8-OHdG) is a product of oxidative DNA damage. The presence of 8-OHdG in urine has been used to detect and measure the degree of oxidative DNA damage in humans and animals, which may be linked to cancer and aging. When 8-OHdG is excreted into urine, it can react with other molecules such as protein or inorganic phosphorus, causing more oxidative DNA damage. 2'-Deoxy-8-oxoguanosine has also been shown to cause cell toxicity by damaging the cell's squamous epithelium, leading to cancer.For the 15N5 labelled version please check ND09970.

An isomer of guanosine, used as a synthesis intermediate.

N6-Isopentenyladenosine-5'-monophosphate sodium salt is an adenosine conjugate acid. It is a monomer of polyribonucleotide chain, which is necessary for the formation of ribonucleic acid (RNA) and deoxyribonucleic acid (DNA). N6-Isopentenyladenosine-5'-monophosphate sodium salt is a conjugate base that has the ability to bind to DNA. This binding prevents the formation of a complex with RNA polymerase, thereby inhibiting transcription and replication.

Second messenger in intracellular signal transduction

5-Methylcytidine is a nucleoside that is found in DNA and RNA. It is used in structural biology to probe the structure of DNA. 5-Methylcytidine binds to the enzyme methyl transferase, which catalyzes the transfer of a methyl group from S-adenosylmethionine to produce 5-methyluridine. This reaction occurs in long-term toxicity studies using primary cells, such as lymphocytes and fibroblasts. 5-Methylcytidine has been shown to inhibit tumour growth in mice by binding to nuclear dna polymerase and blocking transcription. The binding site for this drug on the polymerase is located at the same site as that for nucleoside analogues like azidothymidine (AZT) and zidovudine (AZT).

1-(b-D-Arabinofuranosyl)uracil is a nucleoside analog containing uracil, a nitrogenous base found in RNA, and a β-D-Arabinofuranose sugar. This compound could be used to study its effects on DNA/RNA synthesis.

L-Adenosine is a nucleoside that is naturally synthesized in the body and is also found in certain foods. It has a variety of functions, including as an adenosine receptor agonist, a transport agent, and a substrate for metabolic pathways. In addition to its function as an adenosine receptor agonist, L-adenosine can be transported into mammalian cells by facilitated diffusion. The uptake of L-adenosine into cells is dependent on the concentration of extracellular adenosine and its concentration-response curve has been determined experimentally. L-Adenosine also acts as an inhibitor of phosphodiesterase enzyme which increases cAMP levels in cells. This increase in cAMP leads to increased calcium ion influx into the cell, which may lead to activation of protein kinase A (PKA) and protein kinase C (PKC). L-Adenosine has been shown to have cardiac effects at high concentrations. These effects may be

3-(3-Amino-3-carboxypropyl)uridine is an uridine analog that is used in the study of protein synthesis. It can be used to determine the amino acid sequence of a protein, or to identify proteins with similar sequences. 3-(3-Amino-3-carboxypropyl)uridine can also be used to study enzymatic reactions, such as those involved in the synthesis of polypeptides. This molecule has been shown to produce disulfide bonds and form covalent bonds with other molecules. The three-dimensional structure of this molecule has been determined by NMR spectroscopy and X-ray crystallography.

4-Bromo-3,5-dichloropyridine is a reactive intermediate that is used as a reagent in organic synthesis. It has low basicity and reacts with lithium to form the lithium salt. The salt can be deprotonated to form the bromide anion, which is more reactive than the chloride anion. 4-Bromo-3,5-dichloropyridine can also be used for the selective isomerization of ketones and related compounds. Bromine is added to prevent side reactions with oxygen. The intermediates are generated at the site of reaction by using an excess of diisopropylamide over bromination agent.

2-Hydrazinoadenosine is an active analogue of adenosine. It is a potent agonist for the adenosine receptor subtypes A1 and A2A with high affinity. 2-Hydrazinoadenosine has been shown to inhibit cardiac contractility in animal models, as well as to produce hypotension, bradycardia, and bronchodilation in humans. This drug also has a functional effect on the heart by binding to adenosine receptors, which leads to the inhibition of catecholamine release. This drug is used clinically as an antiarrhythmic agent and a vasodilator in coronary artery disease.

Polycytidylic acid is a single stranded RNA analog which is combined with Polyinosinic acid to form a stable duplex structure known as Polyinosinic acid-polycytidylic acid (Poly I:C). PolyI:C stimulates the secretion of pro-inflammatory cytokines and type I interferon through its interaction with endosomal Toll-like receptor 3 (TLR-3) and the cytoplasmic receptors melanoma differentiation-associated gene 5 (MDA-5) and retinoic acid-inducible gene I (RIG-I). This immunostimulant activity makes Poly I:C a useful vaccine adjuvant and is used in vaccine formulations.  Poly I:C and its stabilized analogs (e.g., poly-ICLC) are also being actively researched for their dual role in oncology: directly targeting tumors and acting as immune potentiators. For example Poly I:C can induce apoptosis in tumor cells and stimulate immunogenic cell death and is therefore being explored alongside chemotherapy, radiotherapy, and checkpoint inhibitors, helping to overcome resistance mechanisms and strengthen treatment outcomes. We can supply PolyI:C to all stages of your project - from R&D and preclinical phases right up to GMP commercial manufacture. Contact our team for custom Poly I:C products.
For more on poly I:C read out blog 'Poly I:C: A Vaccine Adjuvant With Oncological Potential.'

2'-Deoxy-L-uridine is a nucleoside that is found in the human body. It phosphorylates l-thymidine, which is a natural substrate, and this reaction prevents the formation of diphosphate from d-ribose 5'-monophosphate. 2'-Deoxy-L-uridine is an exogenous substance that inhibits cell growth by affecting protein synthesis and DNA replication. 2'-Deoxy-L-uridine has been shown to be more efficient than wild type uridine in inhibiting cell growth in vitro at concentrations of 1 mM or greater. The enantiomers of 2'-deoxy-L-uridine affect cell growth differently, with the (R)-enantiomer being more potent than the (S)-enantiomer.

2',3'-O-Isopropylidenecytidine is a nucleoside for use in research applications