Category: 16710-11-5

Electric Literature of C6H8N2OS. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4-Methyl-6-(methylthio)pyrimidin-2-ol, is researched, Molecular C6H8N2OS, CAS is 16710-11-5, about Thiouracils. 2. Tautomerism and infrared spectra of thiouracils. Matrix-isolation and ab initio studies. Author is Rostkowska, H.; Szczepaniak, K.; Nowak, M. J.; Leszczynski, J.; KuBulat, K.; Person, Willis B..

A study of the IR spectra of thiouracils isolated in low-temperature inert matrixes demonstrated that 2- and 4-thiouracils together with their N1- and N3-methylated derivatives as well as 2,4-dithiouracil exist under these conditions only in the oxothione or dithione tautomeric forms. In contrast, S2- and S4-methylated derivatives exist as a mixture of hydroxy and oxo tautomeric forms under the same conditions. The ratio of concentrations of the oxo and hydroxy tautomers and the free energy differences, were exptl. estimated, from the ratio of the absorbances of the NH and OH stretches. An assignment of the observed IR bands, particularly those related to the C:S stretching vibrations, is proposed on the basis of the comparison of the matrix spectra with those calculated by using ab initio methods (3-21G* basis set).

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

Computed Properties of C6H8N2OS. 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-6-(methylthio)pyrimidin-2-ol, is researched, Molecular C6H8N2OS, CAS is 16710-11-5, about Bis-s-triazolo[1,5-a:1′,5′-c]pyrimidine and some simple derivatives. Author is Brown, Desmond J.; Shinozuka, Kazuo.

A general synthetic route to the new tricyclic system bis-s-triazolo[1,5-a:1′,5′-c]pyrimidine is reported. Thus the parent heterocycle (I; R = R1 = H) is prepared from the key bicyclic intermediate, s-triazolo[18k-c]pyrimidin-5-ylamine, through the 5-dimethylaminomethyleneamino, 5-hydroxyaminomethyleneamino and 5-acetoxyaminomethyleneamino derivatives, followed by final cyclization. I (R = H, Me, R1 = H, Me, Ph) are prepared similarly. Structures are confirmed by NMR spectra.

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Reference:
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.

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 4-Methyl-6-(methylthio)pyrimidin-2-ol( cas:16710-11-5 ) is researched.Application In Synthesis of 4-Methyl-6-(methylthio)pyrimidin-2-ol.Erkin, A. V.; Krutikov, V. I. published the article 《4-arylamino-2-(2-acetoxyethyl)amino-6-methylpyrimidines: Synthesis, deacetylation, and biological activity》 about this compound( cas:16710-11-5 ) in Russian Journal of General Chemistry. Keywords: ethanolamine acetate arylaminopyrimidinyl tuberculostatic preparation; pyrimidinediamine acetoxyethyl aryl tuberculostatic preparation; deacetylation acetoxyethylaminopyrimidine. Let’s learn more about this compound (cas:16710-11-5).

The reaction of 2-(2-acetoxyethyl)amino-4-chloro-6-methylpyrimidine with aromatic amines leads to a series of 4-arylamino-2-(2-acetoxyethyl)amino-6-methylpyrimidines. Deacetylation of these compounds proceeds in both acidic and basic media. Most of the (arylamino)pyrimidines obtained exhibit a pronounced antituberculous effect.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 16710-11-5, is researched, SMILESS is CSC1=NC(O)=NC(C)=C1, Molecular C6H8N2OSJournal, Russian Journal of General Chemistry called 4-arylamino-2-(2-acetoxyethyl)amino-6-methylpyrimidines: Synthesis, deacetylation, and biological activity, Author is Erkin, A. V.; Krutikov, V. I., the main research direction is ethanolamine acetate arylaminopyrimidinyl tuberculostatic preparation; pyrimidinediamine acetoxyethyl aryl tuberculostatic preparation; deacetylation acetoxyethylaminopyrimidine.Application In Synthesis of 4-Methyl-6-(methylthio)pyrimidin-2-ol.

The reaction of 2-(2-acetoxyethyl)amino-4-chloro-6-methylpyrimidine with aromatic amines leads to a series of 4-arylamino-2-(2-acetoxyethyl)amino-6-methylpyrimidines. Deacetylation of these compounds proceeds in both acidic and basic media. Most of the (arylamino)pyrimidines obtained exhibit a pronounced antituberculous effect.

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

Winkley, Michael W.; Robins, Roland K. published the article 《Pyrimidine nucleosides. I. Synthesis of 6-methylcytidine, 6-methyluridine, and related 6-methylpyrimidine nucleosides》. Keywords: pyrimidine nucleosides; nucleosides pyrimidine; cytosines; cytidines; uridines; uracils; ribofuranosyls; methylpyrimidine nucleosides.They researched the compound: 4-Methyl-6-(methylthio)pyrimidin-2-ol( cas:16710-11-5 ).Electric Literature of C6H8N2OS. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:16710-11-5) here.

Synthesis of 6-methylprimidine nucleosides was realized. 6-Methylcytidine (I) and 6-methyl-2′-deoxycytidine were prepared by direct utilization of 6-methylcytosine (II) via silylation and subsequent treatment with the appropriate per-O-acetylglycosyl halide in MeCN. Conversion of I into 6-methyluridine was achieved in 65% yield. This direct glycosylation procedure applied to 6-methyluracil gave 6-methyl-3-(β-D-ribofuranosyl)uracil as the major product. Utilization of this general method resulted in preparation of 5,6-dimethyluridine. A new route to the synthesis of II is reported. 31 references.

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

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Action of Methyl Iodide and of Benzyl Chloride upon 2-Oxy-4-methyl-6-methylmercaptopyrimidine》. Authors are Wheeler, Henry L.; Mcfarland, David F..The article about the compound:4-Methyl-6-(methylthio)pyrimidin-2-olcas:16710-11-5,SMILESS:CSC1=NC(O)=NC(C)=C1).Name: 4-Methyl-6-(methylthio)pyrimidin-2-ol. Through the article, more information about this compound (cas:16710-11-5) is conveyed.

2-Methylmercapto-4-methyl-6-chloropyrimidine, C6H7N2ClS, was made from the oxypyrimidine and PCl5, b32-5 147°, m. 39-40°. This with KSH gave 2-methylmercapto-4-methyl-6-thiopyrimidine, C6H8N2S2, m. 214°, heating at 215-23° gave 2,6-dithio-4-methyluracil. Boiling the mercapto compound with HCl formed 6-thio-4-methyluracil, C6H6ON2S, prisms decompose above 250°, which with NaOH and MeI gives 2-oxy-4-methyl-6-methylmercaptopyrimidine, C6H8ON2S, needles, m. 174-5°. The mercaptopyrimidine with NaOH and PhCH2Cl yielded after treatment with HCl a mixture of 1-benzyl and 3-benzyluracil. The methylation of 2-oxy-4-methyl-6-methylmercaptopyrimidine gave 2-oxy-3,4-dimethyl-6-methylmercaptopyrimidine, C7H10ON2S, m. 170-1° and probably the 1,4-dimethyl product not isolated. 2-Oxy-4-methyl-6-o-nitrobenzylmercaptopyrimidine, m. 205°. 2-Oxy-4-methyl-6-m-dinitrophenylmercaptopyrimidine, m. 208°.

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

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 4-Methyl-6-(methylthio)pyrimidin-2-ol, is researched, Molecular C6H8N2OS, CAS is 16710-11-5, about Synthesis and anti-hepatitis B virus activity of new pyrimidine peptide nucleic acid analogs, the main research direction is pyrimidine peptide nucleic acid analog preparation antiviral hepatitis B.Category: naphthyridine.

A series of 4-methylsulfanylpyrimidin-2(1H)-one peptide nucleic acid analogs were synthesized and tested for their antiviral activity against hepatitis B virus. Plaque reduction infectivity assay was used to determine the virus count reduction as a result of treatment with tested compounds

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

Computed Properties of C6H8N2OS. 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-6-(methylthio)pyrimidin-2-ol, is researched, Molecular C6H8N2OS, CAS is 16710-11-5, about Thiouracils. 2. Tautomerism and infrared spectra of thiouracils. Matrix-isolation and ab initio studies. Author is Rostkowska, H.; Szczepaniak, K.; Nowak, M. J.; Leszczynski, J.; KuBulat, K.; Person, Willis B..

A study of the IR spectra of thiouracils isolated in low-temperature inert matrixes demonstrated that 2- and 4-thiouracils together with their N1- and N3-methylated derivatives as well as 2,4-dithiouracil exist under these conditions only in the oxothione or dithione tautomeric forms. In contrast, S2- and S4-methylated derivatives exist as a mixture of hydroxy and oxo tautomeric forms under the same conditions. The ratio of concentrations of the oxo and hydroxy tautomers and the free energy differences, were exptl. estimated, from the ratio of the absorbances of the NH and OH stretches. An assignment of the observed IR bands, particularly those related to the C:S stretching vibrations, is proposed on the basis of the comparison of the matrix spectra with those calculated by using ab initio methods (3-21G* basis set).

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4-Methyl-6-(methylthio)pyrimidin-2-ol(SMILESS: CSC1=NC(O)=NC(C)=C1,cas:16710-11-5) is researched.Name: 5-Iodo-2-furaldehyde. The article 《4-arylamino-2-(2-acetoxyethyl)amino-6-methylpyrimidines: Synthesis, deacetylation, and biological activity》 in relation to this compound, is published in Russian Journal of General Chemistry. Let’s take a look at the latest research on this compound (cas:16710-11-5).

The reaction of 2-(2-acetoxyethyl)amino-4-chloro-6-methylpyrimidine with aromatic amines leads to a series of 4-arylamino-2-(2-acetoxyethyl)amino-6-methylpyrimidines. Deacetylation of these compounds proceeds in both acidic and basic media. Most of the (arylamino)pyrimidines obtained exhibit a pronounced antituberculous effect.

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