2620-62-4Relevant articles and documents
Adenosine N1-oxide analogues as inhibitors of orthopox virus replication
Khandazhinskaya, Anastasiya L.,Shirokova, Elena A.,Shipitsin, Alexander V.,Karpenko, Inna L.,Belanov, Evgenii F.,Kukhanova, Marina K.,Yasko, Maksim V.
, p. 1107 - 1121 (2006)
Several new types of adenosine N1-oxide (ANO) derivatives including N1-alkoxy and N6-alkyl as well as the analogues with a trihydroxycyclopentane ring in place of the ribose residue were synthesized and their antiviral properties were evaluated in Vero and LLC-MK2 cell cultures infected with vaccinia, mousepox, monkeypox, cowpox, and different isolates of smallpox viruses. The antiviral activity of ANO and its derivatives significantly depended on the virus type and cell cultures. Mousepox and monkeypox viruses were the most sensitive to these compounds, while vaccinia and cowpox viruses were inhibited at the concentrations 1-1.5 orders of magnitude higher. The toxicity of the synthesized compounds was much lower than that of ANO. Modifications of the ANO N6-position did not offer any advantages over the parent compound. The synthesized N1-oxide derivatives of noraristeromycin retained the activity comparable with noraristeromycin and displayed a decreased toxicity. No direct correlation between antiviral activity and stability of the compounds was found.
6-Iodopurine as a Versatile Building Block for RNA Purine Architecture Modifications
Chen, Kun,Fang, Zhentian,He, Zhiyong,Heng, Panpan,Wang, Baoshan,Xie, Yalun,Yang, Wei,Zhou, Xiang
, p. 353 - 362 (2022/02/17)
Natural modified bases in RNA were found to be indispensable for basic biological processes. In addition, artificial RNA modifications have been a versatile toolbox for the study of RNA interference, structure, and dynamics. Here, we present a chemical method for the facile synthesis of RNA containing C6-modified purine. 6-Iodopurine, as a postsynthetic building block with high reactivity, was used for metal-free construction of C-N, C-O, and C-S bonds under mild conditions and C-C bond formation by Suzuki-Miyaura cross-coupling. Our strategy provides a convenient approach for the synthesis of various RNA modifications, especially for oligonucleotides containing specific structures.
Nucleotide Analog ARL67156 as a Lead Structure for the Development of CD39 and Dual CD39/CD73 Ectonucleotidase Inhibitors
Idris, Riham M.,Lee, Sang-Yong,Lopez, Vittoria,Luo, Xihuan,Müller, Christa E.,Mirza, Salahuddin,Namasivayam, Vigneshwaran,Pelletier, Julie,Sévigny, Jean,Sch?kel, Laura,Schmies, Constanze C.,Vu, The Hung
, (2020/10/02)
Nucleoside triphosphate diphosphohydrolase1 (NTPDase1, CD39) inhibitors have potential as novel drugs for the (immuno)therapy of cancer. They increase the extracellular concentration of immunostimulatory ATP and reduce the formation of AMP, which can be further hydrolyzed by ecto-5’-nucleotidase (CD73) to immunosuppressive, cancer-promoting adenosine. In the present study, we synthesized analogs and derivatives of the standard CD39 inhibitor ARL67156, a nucleotide analog which displays a competitive mechanism of inhibition. Structure-activity relationships were analyzed at the human enzyme with respect to substituents in the N6- and C8-position of the adenine core, and modifications of the triphosph(on)ate chain. Capillary electrophoresis coupled to laser-induced fluorescence detection employing a fluorescent-labeled ATP derivative was employed to determine the compounds’ potency. Selected inhibitors were additionally evaluated in an orthogonal, malachite green assay versus the natural substrate ATP. The most potent CD39 inhibitors of the present series were ARL67156 and its derivatives 31 and 33 with Ki values of around 1 μM. Selectivity studies showed that all three nucleotide analogs additionally blocked CD73 acting as dual-target inhibitors. Docking studies provided plausible binding modes to both targets. The present study provides a full characterization of the frequently applied CD39 inhibitor ARL67156, presents structure-activity relationships, and provides a basis for future optimization towards selective CD39 and dual CD39/CD73 inhibitors.
OLIGONUCLEOTIDE
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Paragraph 0489; 0490, (2016/01/25)
The present invention provides an oligonucleotide having improved affinity for AGO2, and the like. The oligonucleotide has a nucleotide residue or a nucleoside residue represented by formula (I) {wherein X1 is an oxygen atom or the like, R1 is formula (IIA) (wherein R5A is halogen or the like, and R6A is a hydrogen atom or the like) or formula (IVA) (wherein Y3A is a nitrogen atom or the like, and Y4A is CH or the like), or the like, R2 is a hydrogen atom, hydroxy, halogen, or optionally substituted lower alkoxy, and R3 is a hydrogen atom or the like} at the 5′ end thereof, and the nucleotide residue or the nucleoside residue binds to an adjacent nucleotide residue through the oxygen atom at position 3.