case presentation a 52-year-old malay gentleman, with hepatitis c virus and hiv infection was admitted to the intensive care unit for severe lactic acidosis, with concurrent escherichia coli bacteremia with multiorgan dysfunction. the patient was started on highly active antiretroviral therapy, which included tenofovir, 5 weeks before presentation. antimicrobial therapy, continuous veno-venous ...

Nucleosides are glycosylamines that structurally form part of nucleotide molecules, the building block of DNA and RNA. Both nucleosides and nucleotides are vital components of all living cells and involved in several key biological processes. Some of these nucleosides have been obtained from a variety of marine resources. Because of the biological importance of these compounds, this review cove...

Ipata PL. Origin, utilization, and recycling of nucleosides in the central nervous system. Adv Physiol Educ 35: 342–346, 2011; doi:10.1152/advan.00068.2011.—The brain relies on the salvage of preformed purine and pyrimidine rings, mainly in the form of nucleosides, to maintain its nucleotide pool in the proper qualitative and quantitative balance. The transport of nucleosides from blood into ne...

Pyridine-C-nucleosides, „Inverse“ [4+2] Cycloadditions, 1,2,4-Triazine-C-nucleosides, 2,,3’-Dideoxy-/?-D-ribofuranosyl-pyridines The anomeric imido esters 5 and 6, appropriate precursors for C-nucleoside synthesis, were prepared and utilized as heterodienophiles in a Diels-Alder reaction with inverse electron demand to yield the novel, protected 1.2.4-triazine C-nucleosides 8 and 9. They could ...

Intracellular Toxoplasma gondii grown in human foreskin fibroblast cells transported nitrobenzylthioinosine [NBMPR; 6-[(4-nitrobenzyl)mercapto]-9-beta-D-ribofuranosylpurine], an inhibitor of nucleoside transport in mammalian cells, as well as the nonphysiological beta-L-enantiomers of purine nucleosides, beta-L-adenosine, beta-L-deoxyadenosine, and beta-L-guanosine. The beta-L-pyrimidine nucleo...

In this article, we focus on the synthesis of aryl C-glycosides via Heck coupling. It is organized based on the type of structures used in the assembly of the C-glycosides (also called C-nucleosides) with the following subsections: pyrimidine C-nucleosides, purine C-nucleosides, and monocyclic, bicyclic, and tetracyclic C-nucleosides. The reagents and conditions used for conducting the Heck cou...

General ............................................................................................................................................S1 General Procedure A: Preparation of 3’-Phosphorylated Nucleosides .................................S1 Preparation of 3’-acetylated Nucleosides...................................................................................S8 NMR Studies .........

Precise, quantitative high-performance liquid chromatography of samples equivalent to 25 l of urine can be done in less than 1 h with excellent resolution and recovery of pseudouridine, 1-methyladenosine, 1-methylinosine, N2-methylguanosine, adenosine, and N2,N2-dimethylguanosine. These six nucleosides are present in normal urine in concentrations ranging from 0.4 to 60 mg/liter. The use of an ...