Category: naphthyridine

COA of Formula: C5H3IO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Site-Selective C-S Bond Formation at C-Br over C-OTf and C-Cl Enabled by an Air-Stable, Easily Recoverable, and Recyclable Palladium(I) Catalyst. Author is Scattolin, Thomas; Senol, Erdem; Yin, Guoyin; Guo, Qianqian; Schoenebeck, Franziska.

This report widens the repertoire of emerging PdI catalysis to carbon-heteroatom, i.e., C-S bond formation. While Pd0-catalyzed protocols may suffer from the formation of poisonous sulfide-bound off-cycle intermediates and lack of selectivity, the mechanistically diverse PdI catalysis concept circumvents these challenges and allows for C-S bond formation (S-aryl and S-alkyl) of a wide range of aryl halides. Site-selective thiolations of C-Br sites in the presence of C-Cl and C-OTf were achieved in a general and a priori predictable fashion. Computational, spectroscopic, x-ray, and reactivity data support dinuclear PdI catalysis to be operative. Contrary to air-sensitive Pd0, the active PdI species was easily recovered in the open atm. and subjected to multiple rounds of recycling.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Uracil-Directed Ligand Tethering: An Efficient Strategy for Uracil DNA Glycosylase (UNG) Inhibitor Development, published in 2005-12-14, which mentions a compound: 2689-65-8, Name is 5-Iodo-2-furaldehyde, Molecular C5H3IO2, Application of 2689-65-8.

Uracil DNA glycosylase (UNG) is an important DNA repair enzyme that recognizes and excises uracil bases in DNA using an extrahelical recognition mechanism. It is emerging as a desirable target for small-mol. inhibitors given its key role in a wide range of biol. processes including the generation of antibody diversity, DNA replication in a number of viruses, and the formation of DNA strand breaks during anticancer drug therapy. To accelerate the discovery of inhibitors of UNG we have developed a uracil-directed ligand tethering strategy. In this efficient approach, a uracil aldehyde ligand is tethered via alkyloxyamine linker chem. to a diverse array of aldehyde binding elements. Thus, the mechanism of extrahelical recognition of the uracil ligand is exploited to target the UNG active site, and alkyloxyamine linker tethering is used to randomly explore peripheral binding pockets. Since no compound purification is required, this approach rapidly identified the first small-mol. inhibitors of human UNG with micromolar to submicromolar binding affinities. In a surprising result, these uracil-based ligands are found not only to bind to the active site but also to bind to a second uncompetitive site. The weaker uncompetitive site suggests the existence of a transient binding site for uracil during the multistep extrahelical recognition mechanism. This very general inhibitor design strategy can be easily adapted to target other enzymes that recognize nucleobases, including other DNA repair enzymes that recognize other types of extrahelical DNA bases.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Recommanded Product: 2689-65-8. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about A simple preparative synthesis of epoxy[1,3]oxazino(or oxazolo)[2,3-a]isoindoles and their thia analogues via IMDAF. Author is Zubkov, Fedor I.; Galeev, Timur R.; Nikitina, Eugeniya V.; Lazenkova, Irina V.; Zaytsev, Vladimir P.; Varlamov, Alexey V..

Azomethines, easily prepared from 5-(R)-furfurals and 1,3- or 1,2-amino alcs. (aminothiols), react under mild conditions with maleic anhydride affording 8,10a-epoxy[1,3]oxa(thia)zino[2,3-a]isoindole-7- and 7,9a-epoxy[1,3]oxa(thia)zolo[2,3-a]isoindole-6-carboxylic acids. The reaction proceeds through initial N-acylation with subsequent intramol. exo-Diels-Alder cycloaddition and stereoselectively leads to the exo adducts. The ‘one-pot’ synthetic protocol is also presented.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Felczak, Krzysztof; Drabikowska, Alicja; Vilpo, Juhani A.; Kulikowski, Tadeusz; Shugar, David researched the compound: 4-Methyl-6-(methylthio)pyrimidin-2-ol( cas:16710-11-5 ).Formula: C6H8N2OS.They published the article 《6-Substituted and 5,6-Disubstituted Derivatives of Uridine: Stereoselective Synthesis, Interaction with Uridine Phosphorylase, and in Vitro Antitumor Activity》 about this compound( cas:16710-11-5 ) in Journal of Medicinal Chemistry. Keywords: structure activity nucleoside antitumor phosphorylase substrate; uridine preparation antitumor cytotoxicity phosphorylase substrate; nucleoside preparation antitumor cytotoxicity phosphorylase substrate. We’ll tell you more about this compound (cas:16710-11-5).

Stereoselective procedures are described for the synthesis of 6-alkyluridines, e.g. I (R = F, OH, R1 = H, F), by Lewis acid-catalyzed condensation of trimethylsilylated 6-alkyl-4-alkylthiouracils with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose (ABR) and trimethylsilylated 6-alkyl-3-benzyluracils with ABR. For all the foregoing nucleosides in the fixed syn conformation about the glycosyl bond, 1H NMR spectroscopy further demonstrated that the pentose rings exist predominantly in the conformation N (3′-endo). Most of the nucleosides were weak substrates of Escherichia coli pyrimidine nucleoside phosphorylase. The 5-fluoro-6-substituted uridines were the poorest substrates. Cytotoxicities of the nucleosides were examined vs the human tumor cell lines MOLT-3, U-937, K-562, and IM-9, as well as PHA-stimulated human lymphocytes. Two of the analogs, 5-fluoro-6-(fluoromethyl)uridine and 5-fluoro-6-(hydroxymethyl)uridine, exhibited cytotoxicities comparable to that of 5-fluorouracil.

Compounds in my other articles are similar to this one(4-Methyl-6-(methylthio)pyrimidin-2-ol)Formula: C6H8N2OS, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Electric Literature of C5H3IO2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Evaluation of the reactivity of furfural and products of its oxidation with hydrogen peroxide. Author is Muzychenko, G. F.; Klebanov, M. S.; Badovskaya, L. A.; Kul’nevich, V. G..

Energy levels were calculated (MO) for furan and furfural; energies of formation in each stage of the oxidation of furfural by H2O2 were also calculated Rate constants of oxidation of I increased in the order R = NO2, iodo, Br, H, Cl, Me, Me2N.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Reference of 5-Iodo-2-furaldehyde. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Knoevenagel condensation of some 5-substituted furan-2-carboxaldehyde with creatinine and their antimicrobial screening. Author is Khalaf, Muna I.; Abdo, Abdel-Wahab; Kandil, Farouk; Adnan, Ali Nizam.

A series of heterocyclic compounds of 5-(5-R-furfurylidene)-creatinine were prepared and screened for their antimicrobial activity, these compounds were identified by their m.ps., IR, Ultraviolate and NMR spectra.

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Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Safety of 6-Hydroxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 6-Hydroxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid, is researched, Molecular C10H11NO3, CAS is 91523-50-1, about Synthesis and murine antineoplastic activity of bis[carbamoyloxymethyl] derivatives of pyrrolo[2,1-a]isoquinoline. Author is Anderson, Wayne K.; McPherson, Howard L. Jr.; New, James S.; Rick, Arvela C..

The title compounds I (R = Me2CH, cyclohexyl, R1 = MeO; R = Me, Et, cyclohexyl, R1 = H) were prepared I (R1 = MeO) were prepared from m-(PhCH2O)C6H4CHO via phenolic cyclization of m-HOC6H4CH2CH2NH2 with glyoxylic acid to give the isoquinoline II, which underwent cyclization with MeO2CCCCO2Me to give the pyrroloisoquinoline III. All I had P 388 lymphocytic activity. I (R = Me2CH, R1 = MeO) was tested in an expanded tumor panel and was shown to be active against B16 melanocarcinoma, CD8F1 mammary, L1210 lymphoid leukemia, colon 38, and MX-1 human tumor breast xenograft systems.

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Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Computed Properties of C9H8N2. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 4-Methyl-1,8-naphthyridine, is researched, Molecular C9H8N2, CAS is 1569-17-1, about Naphthyridine chemistry. VIII. Mass spectra of the 1,x-naphthyridines and some of their methyl derivatives. Author is Paudler, William W.; Kress, Thomas J..

The mass spectra of the four parent 1,x-naphthyridines, the 2-, 3-, and 4-monomethyl-1,5-, 1,6-, and 1,8-naphthyridines, seven dimethyl-1,8-naphthyridines, and one trimethyl-1,8-naphthyridine are reported. Evidence for an azatropylium ion intermediate in the fragmentation of the methyl compounds is presented. The fragmentation modes of the naphthyridines are similar to those for the quinolines in addition to several new processes.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Application of 2689-65-8. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 5-Iodo-2-furaldehyde, is researched, Molecular C5H3IO2, CAS is 2689-65-8, about Improving the Solubility of Artificial Ligands of Streptavidin to Enable More Practical Reversible Switching of Protein Localization in Cells. Author is Tachibana, Ryo; Terai, Takuya; Boncompain, Gaelle; Sugiyama, Shigeru; Saito, Nae; Perez, Franck; Urano, Yasuteru.

Chem. inducers that can control target-protein localization in living cells are powerful tools to investigate dynamic biol. systems. We recently reported the retention using selective hook or “”RUSH”” system for reversible localization change of proteins of interest by addition/washout of small-mol. artificial ligands of streptavidin (ALiS). However, the utility of previously developed ALiS was restricted by limited solubility in water. Here, we overcame this problem by X-ray crystal structure-guided design of a more soluble ALiS derivative (ALiS-3), which retains sufficient streptavidin-binding affinity for use in the RUSH system. The ALiS-3-streptavidin interaction was characterized in detail. ALiS-3 is a convenient and effective tool for dynamic control of a-mannosidase II localization between ER and Golgi in living cells.

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1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Collection of Czechoslovak Chemical Communications called Furan derivatives. LXXXII. Kinetics of the condensation of 5-nitro-2-furfuryl dichloromethyl sulfone with aldehydes, Author is Hrdina, M.; Jurasek, A.; Knoppova, V., which mentions a compound: 2689-65-8, SMILESS is IC1=CC=C(O1)C=O, Molecular C5H3IO2, Electric Literature of C5H3IO2.

The kinetics of condensation of I with II (R = H, Me, Cl, Br, iodo, CO2Me, NO2) and III (R1 = H, 4-Me, 4-Cl, 3,4-Cl2, 4-Br, 4-CO2Et, 2-NO2, 3-NO2, 4-NO2), resp., were correlated with substituent constants

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Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem