Nucleosídeos

2'-Deoxy-L-adenosine is an adenosine analogue that has been shown to inhibit the growth of tumor cells in mice. The mechanism of this inhibition is not well understood, but it is thought that 2'-deoxy-L-adenosine inhibits the adenosine A3 receptor and blocks the activation of toll-like receptors. This drug also has been shown to have anti-inflammatory properties, which may be due to its ability to inhibit prostaglandin synthesis. It has been used as a model system for studying cellular responses to DNA damage caused by ultraviolet radiation. 2'-Deoxy-L-adenosine also has been shown to have a cytotoxic effect on human HL60 cells, which is mediated by nuclear DNA fragmentation.

6mer oligonucleotide

2'-Deoxy-5-formylcytidine is a nucleoside analog that is used as a chemotherapeutic agent. It is cytotoxic to cells by binding to DNA and preventing the synthesis of DNA, RNA, and protein. The drug has been shown to induce cellular senescence in human fibroblasts, which can be reversed by the addition of deuterium. 2'-Deoxy-5-formylcytidine also inhibits the production of reactive oxygen species (ROS) by inducing the expression of antioxidant enzymes such as superoxide dismutase 2 and glutathione peroxidase 1. The oxidation products are misincorporated into DNA strands, leading to intramolecular hydrogen bonds with cytosine bases. These modifications lead to denaturation of DNA and inhibition of transcription and replication.
2'-Deoxy-5-formylcytidine also interacts with oligodeoxynucleotides, which leads to misinc

OBEA-Fluorescein-2'-deoxy-5'-O-DMT-cytidine 3'CE-amidite is an anticancer drug that belongs to the class of deoxyribonucleosides. It is a novel nucleoside analogue that has been modified with fluorescein and a cytidine derivative. The synthesis of this compound is carried out by coupling a cytidine derivative with fluorescein and the phosphoramidite of the corresponding ribonucleotide. OBEA-Fluorescein-2'-deoxy-5'-O-DMT-cytidine 3'CE amidite has antiviral activity against DNA viruses, such as hepatitis B virus and human immunodeficiency virus, as well as RNA viruses, such as influenza A virus. This compound also has antiinflammatory activities.

2-Methylthioadenosine is a purine nucleoside which induces necrotic cell death. It is the first of its kind to be shown to have activity against squamous carcinoma cells, and is activated by nucleoside phosphorylase in order to produce its cytotoxic form. 2-Methylthioadenosine also inhibits the transcription-polymerase chain reaction and increases oxidative injury. This drug has been shown to have receptor activity in brain cells, as well as chemotactic activity for gland cells. 2-Methylthioadenosine has been used as a model organism for polymerase chain reactions, and has been shown to inhibit p2y receptors in the human colon cancer cell line HT29.

1-(2'-Deoxy-2'-fluoro-b-D-arabinofuranosyl)-5-ethyluracil is a nucleoside analog with modifications to alter its biological activity. It contains a β-D-arabinofuranose sugar instead of the standard β-D-deoxyribose in natural nucleosides and
the fluorine (F) at the 2'-position increases resistance to enzymatic degradation and alters its biological activity. The 5-ethyl modification on the uracil ring enhances its interaction with viral polymerases.