Tag: M.W:100-200

Computed Properties of C7H13BN2O2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (1-Isobutyl-1H-pyrazol-5-yl)boronic acid, is researched, Molecular C7H13BN2O2, CAS is 847818-64-8, about Synthesis of pinacol esters of 1-alkyl-1H-pyrazol-5-yl- and 1-alkyl-1H-pyrazol-4-ylboronic acids. Author is Ivachtchenko, Alexandre V.; Kravchenko, Dmitry V.; Zheludeva, Valentina I.; Pershin, Dmitry G..

1-Substituted pyrazolylboronic acids and their pinacol esters were prepared by lithiation-borylation reaction sequence starting from bromopyrazoles. Alkylation of 4-bromo-1H-pyrazole gave 1-alkyl-4-bromo-1H-pyrazoles, which were lithiated at -80° and borylated with B(OMe)3 to give 1-R-1H-pyrazole-4-boronic acids [4a-g, R = Me, Et, Pr, (CH2)2CHMe2, (CH2)2OMe, (CH2)3NMe2, (CH2)2CH(OEt)2]. Lithiation of 4-bromo-1-(2-dimethylaminoethyl)-1H-pyrazole (2h) gave 5-lithio-derivative, which on borylation afforded 1-R1-4-Br-1H-pyrazole-5-boronic acid (8). Boronic acids 4a-g are unstable and were deborylated slowly due to hydrolysis by traces of water; the stability of boryl derivatives can be greatly enhanced by converting to corresponding pinacol boronates (10a-g). Direct lithiation of 1-R2-1H-pyrazoles by BuLi at -20° afforded 5-lithio-derivatives, which were converted to corresponding 1-R2-1H-pyrazole-5-boronic acids [17a-e; R2 = Me, iBu, Pr, (CH2)2CHMe2, (CH2)2CH(OEt)2] and their pinacol boronates (18a-e, same R2). The key step in the described methodol. is the regioselective lithiation of the pyrazole ring. The synthesized pinacolates are stable under prolonged storage and can be used as convenient reagents in organic synthesis.

Although many compounds look similar to this compound(847818-64-8)Computed Properties of C7H13BN2O2, numerous studies have shown that this compound(SMILES:CC(C)CN1N=CC=C1B(O)O), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

Sacconi, Luigi; Foa, Marco; Bencini, Elena; Nocci, Roberto; Sabarino, Giampiero published an article about the compound: 4-Methyl-1,8-naphthyridine( cas:1569-17-1,SMILESS:CC1=C2C=CC=NC2=NC=C1 ).Category: naphthyridine. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:1569-17-1) through the article.

Catalytic systems based on dimeric Cu complexes with imidazole as bridging unit and on Cu naphthyridine complexes for polymerization of 2,6-dimethylphenol were described. The polymerization conditions, e.g., nature and amount of free amine added, solvent, etc., were studied to get a polymer of suitable mol. weight

Although many compounds look similar to this compound(1569-17-1)Category: naphthyridine, numerous studies have shown that this compound(SMILES:CC1=C2C=CC=NC2=NC=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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

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).

Although many compounds look similar to this compound(16710-11-5)Electric Literature of C6H8N2OS, numerous studies have shown that this compound(SMILES:CSC1=NC(O)=NC(C)=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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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, Synlett called A one-pot method for the synthesis of naphthyridines via modified Friedlander reaction, Author is Zhichkin, Pavel; Cillo Beer, Catherine M.; Rennells, W. Martin; Fairfax, David J., which mentions a compound: 1569-17-1, SMILESS is CC1=C2C=CC=NC2=NC=C1, Molecular C9H8N2, Formula: C9H8N2.

A one-pot method for the preparation of 1,8-naphthyridine derivatives is reported. The method involves the dimetalation of an appropriate N-2-pyridylpivalamide or tert-butylcarbamate followed by reaction with a β-dimethylamino- or β-alkoxyacrolein derivative This method is also applicable to 1,6-naphthyridines.

Compounds in my other articles are similar to this one(4-Methyl-1,8-naphthyridine)Formula: C9H8N2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

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

COA of Formula: C9H8N2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 4-Methyl-1,8-naphthyridine, is researched, Molecular C9H8N2, CAS is 1569-17-1, about Discovery of Azetidinyl Ketolides for the Treatment of Susceptible and Multidrug Resistant Community-Acquired Respiratory Tract Infections. Author is Magee, Thomas V.; Ripp, Sharon L.; Li, Bryan; Buzon, Richard A.; Chupak, Lou; Dougherty, Thomas J.; Finegan, Steven M.; Girard, Dennis; Hagen, Anne E.; Falcone, Michael J.; Farley, Kathleen A.; Granskog, Karl; Hardink, Joel R.; Huband, Michael D.; Kamicker, Barbara J.; Kaneko, Takushi; Knickerbocker, Michael J.; Liras, Jennifer L.; Marra, Andrea; Medina, Ivy; Nguyen, Thuy-Trinh; Noe, Mark C.; Obach, R. Scott; O’Donnell, John P.; Penzien, Joseph B.; Reilly, Usa Datta; Schafer, John R.; Shen, Yue; Stone, Gregory G.; Strelevitz, Timothy J.; Sun, Jianmin; Tait-Kamradt, Amelia; Vaz, Alfin D. N.; Whipple, David A.; Widlicka, Daniel W.; Wishka, Donn G.; Wolkowski, Joanna P.; Flanagan, Mark E..

Respiratory tract bacterial strains are becoming increasingly resistant to currently marketed macrolide antibiotics. The current alternative telithromycin (1) from the newer ketolide class of macrolides addresses resistance but is hampered by serious safety concerns, hepatotoxicity in particular. We have discovered a novel series of azetidinyl ketolides that focus on mitigation of hepatotoxicity by minimizing hepatic turnover and time-dependent inactivation of CYP3A isoforms in the liver without compromising the potency and efficacy of 1.

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

HPLC of Formula: 1569-17-1. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 4-Methyl-1,8-naphthyridine, is researched, Molecular C9H8N2, CAS is 1569-17-1, about Hydrogen-deuterium exchange in 1,8-naphthyridine and some its monosubstituted derivatives. Author is Wozniak, Marian.

Hydrogen-deuterium exchange in 1,8-naphthyridine and 10 of its derivatives containing Me, hydroxy, amino, nitro and chloro substituents are reported. A discussion of the factors influencing the relative positional reactivity toward deuterium in these compounds is 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.

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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.

Compounds in my other articles are similar to this one(6-Hydroxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid)Safety of 6-Hydroxy-1,2,3,4-tetrahydroisoquinoline-1-carboxylic acid, 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

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.

Compounds in my other articles are similar to this one(4-Methyl-1,8-naphthyridine)Computed Properties of C9H8N2, you can compare them to see their pros and cons in some ways,such as convenient, effective and so on.

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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.

Compounds in my other articles are similar to this one(4-Methyl-6-(methylthio)pyrimidin-2-ol)Computed Properties of 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