Category: pyrimidines

Shih, Chuan; Gossett, L. S. published the artcile< The synthesis of N-{2-amino-4-substituted [(pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl}-L-glutamic acids as antineoplastic agents>, Computed Properties of 84955-32-8, the main research area is neoplasm inhibitor aminopyrrolopyrimidinylethylbenzoylglutamic acid; pyrrolopyrimidine folate antagonist antitumor; LY 231514 analog neoplasm inhibitor.

A variety of 4-substituted pyrrolo[2,3-d]pyrimidine based folate antagonists, e.g. I (R = Cl, H, OMe, NH2, SH, NEt2) which are closely related to the novel thymidylate synthase inhibitor LY231514 were prepared 2-Amino-4-chloropyrrolo[2,3-d]pyrimidine (II; R = Cl, R1 = R2 = H) was selected as an important precursor for the preparation of key intermediates such as II (R = Cl, OMe, NEt2, NHCH2Ph, R1 = iodo, CCH, R2 = Me3CCO) (III). Pyrrolopyrimidines III were coupled with either 4-ethynylbenzoylglutamate or 4-iodobenzoylglutamate in a Pd-catalyzed Heck reaction to provide the basic skeleton of the targeted mols. The availability of the chlorine atom allowed the efficient introduction of different substituents at the 4-position of the pyrrolopyrimidine ring. In vitro anal. demonstrated that some I are highly cytotoxic against human leukemic cells (CCRF-CEM) in culture.

Heterocycles published new progress about Antitumor agents. 84955-32-8 belongs to class pyrimidines, and the molecular formula is C7H8N4O, Computed Properties of 84955-32-8.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Miyakawa, Shin; Yamanashi, Hiroto; Kobayashi, Kensei; Cleaves, H. James; Miller, Stanley L. published the artcile< Prebiotic synthesis from CO atmospheres: implications for the origins of life>, Related Products of 15837-41-9, the main research area is carbon monoxide primordial atm prebiotic amino acid life origin.

Most models of the primitive atm. around the time life originated suggest that the atm. was dominated by carbon dioxide, largely based on the notion that the atm. was derived via volcanic outgassing, and that those gases were similar to those found in modern volcanic effluent. These models tend to downplay the possibility of a strongly reducing atm., which had been thought to be important for prebiotic synthesis and thus the origin of life. However, there is no definitive geol. evidence for the oxidation state of the early atm. and bioorganic compounds are not efficiently synthesized from CO2 atmospheres. In the present study, proton-beam irradiation of equimol. mixtures of CO and N2 in the presence of water induced abiotic synthesis of uracil, orotic acid, 5-hydroxyuracil, nicotinic acid, and 4,5-dihydroxypyrimidine. This and similar previous observations suggest that a CO-CO2-N2-H2O atm. can give a variety of bioorganic compounds with yields comparable to those obtained from a strongly reducing atm. Atmospheres containing carbon monoxide might therefore have been conducive to prebiotic synthesis and perhaps the origin of life. CO-dominant atmospheres could have existed if the production rate of CO from impacts of extraterrestrial materials were high or if the upper mantle had been more reduced than today.

Proceedings of the National Academy of Sciences of the United States of America published new progress about Life, origin. 15837-41-9 belongs to class pyrimidines, and the molecular formula is C4H4N2O2, Related Products of 15837-41-9.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Toledo-Sherman, Leticia M.; Prime, Michael E.; Mrzljak, Ladislav; Beconi, Maria G.; Beresford, Alan; Brookfield, Frederick A.; Brown, Christopher J.; Cardaun, Isabell; Courtney, Stephen M.; Dijkman, Ulrike; Hamelin-Flegg, Estelle; Johnson, Peter D.; Kempf, Valerie; Lyons, Kathy; Matthews, Kimberly; Mitchell, William L.; O’Connell, Catherine; Pena, Paula; Powell, Kendall; Rassoulpour, Arash; Reed, Laura; Reindl, Wolfgang; Selvaratnam, Suganathan; Friley, Weslyn Ward; Weddell, Derek A.; Went, Naomi E.; Wheelan, Patricia; Winkler, Christin; Winkler, Dirk; Wityak, John; Yarnold, Christopher J.; Yates, Dawn; Munoz-Sanjuan, Ignacio; Dominguez, Celia published the artcile< Development of a Series of Aryl Pyrimidine Kynurenine Monooxygenase Inhibitors as Potential Therapeutic Agents for the Treatment of Huntington's Disease>, Formula: C5H4Cl2N2O, the main research area is arylpyrimidine kynurenine monooxygenase inhibitor preparation SAR Huntingtons disease.

We report on the development of a series of pyrimidine carboxylic acids that are potent and selective inhibitors of kynurenine monooxygenase and competitive for kynurenine. We describe the SAR for this novel series and report on their inhibition of KMO activity in biochem. and cellular assays and their selectivity against other kynurenine pathway enzymes. We describe the optimization process that led to the identification of a program lead compound with a suitable ADME/PK profile for therapeutic development. We demonstrate that systemic inhibition of KMO in vivo with this lead compound provides pharmacodynamic evidence for modulation of kynurenine pathway metabolites both in the periphery and in the central nervous system.

Journal of Medicinal Chemistry published new progress about Central nervous system agents. 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, Formula: C5H4Cl2N2O.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Dexheimer, Thomas S.; Rosenthal, Andrew S.; Luci, Diane K.; Liang, Qin; Villamil, Mark A.; Chen, Junjun; Sun, Hongmao; Kerns, Edward H.; Simeonov, Anton; Jadhav, Ajit; Zhuang, Zhihao; Maloney, David J. published the artcile< Synthesis and Structure-Activity Relationship Studies of N-Benzyl-2-phenylpyrimidin-4-amine Derivatives as Potent USP1/UAF1 Deubiquitinase Inhibitors with Anticancer Activity against Nonsmall Cell Lung Cancer>, Safety of 2,4-Dichlorothieno[2,3-d]pyrimidine, the main research area is benzylphenylpyrimidinamine antitumor neoplasm deubiquitinase.

Deregulation of ubiquitin conjugation or deconjugation has been implicated in the pathogenesis of many human diseases including cancer. The deubiquitinating enzyme USP1 (ubiquitin-specific protease 1), in association with UAF1 (USP1-associated factor 1), is a known regulator of DNA damage response and has been shown as a promising anticancer target. To further evaluate USP1/UAF1 as a therapeutic target, the authors conducted a quant. high throughput screen of >400000 compounds and subsequent medicinal chem. optimization of small mols. that inhibit the deubiquitinating activity of USP1/UAF1. Ultimately, these efforts led to the identification of ML323 (70) and related N-benzyl-2-phenylpyrimidin-4-amine derivatives, which possess nanomolar USP1/UAF1 inhibitory potency. Moreover, the authors demonstrate a strong correlation between compound IC50 values for USP1/UAF1 inhibition and activity in nonsmall cell lung cancer cells, specifically increased monoubiquitinated PCNA (Ub-PCNA) levels and decreased cell survival. The results establish the druggability of the USP1/UAF1 deubiquitinase complex and its potential as a mol. target for anticancer therapies.

Journal of Medicinal Chemistry published new progress about Antitumor agents. 18740-39-1 belongs to class pyrimidines, and the molecular formula is C6H2Cl2N2S, Safety of 2,4-Dichlorothieno[2,3-d]pyrimidine.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Rai, Roopali; Pandey, Pramod S. published the artcile< Comparative binding study of steroidal adenine with flavin and uracil derivatives>, Product Details of C4H4N2O5, the main research area is steroidal adenine flavin uracil derivative preparation.

A comparative binding study of a steroidal adenine derivative based on lithocholic acid with N10-benzylisoalloxazine (flavin) and N1-iso-propyluracil has been described.

Bioorganic & Medicinal Chemistry Letters published new progress about Drug design. 2244-11-3 belongs to class pyrimidines, and the molecular formula is C4H4N2O5, Product Details of C4H4N2O5.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Sanemitsu, Yuzuru; Nakayama, Yoshinori; Tanabe, Yoo; Matsumoto, Hiroshi; Hashimoto, Shunichi published the artcile< 5-Substituted amino-3,6-dichloro-1,2,4-triazines as new potential herbicides>, Safety of 6-Bromo-1,2,4-triazine-3,5(2H,4H)-dione, the main research area is herbicide triazine structure activity.

5-Substituted 3,6-dichloro-1,2,4-triazines were tested for their preemergent herbicidal activity against 3 weeds, Echinochloa crus-galli, Scirpus juncoides, and Eleocharia acicularis. The activity was related to the structure, e.g., 5-tert-butylamino- and 5-anilino-3,6-dichloro-1,2,4-triazine derivatives exhibited strong herbicidal activity, whereas, Me, OMe, PhO at the 5-position decreased the activity. Also, derivatives with substitution at the 3- and/or 6-position failed to product activity. 5-Diisopropylamino- and 2,6-dimethylpiperidino-1,2,4-triazines were selected as promising new herbicides.

Agricultural and Biological Chemistry published new progress about Echinochloa crus-galli. 4956-05-2 belongs to class pyrimidines, and the molecular formula is C3H2BrN3O2, Safety of 6-Bromo-1,2,4-triazine-3,5(2H,4H)-dione.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Lebraud, Honorine; Wright, David J.; East, Charlotte E.; Holding, Finn P.; O’Reilly, Marc; Heightman, Tom D. published the artcile< In-gel activity-based protein profiling of a clickable covalent ERK1/2 inhibitor>, Name: 4,5-Dichloro-2-(methylthio)pyrimidine, the main research area is in gel activity based protein profiling ERK1 ERK2.

In-gel activity-based protein profiling (ABPP) offers rapid assessment of the proteome-wide selectivity and target engagement of a chem. tool. Here we demonstrate the use of the inverse electron demand Diels Alder (IEDDA) click reaction for in-gel ABPP by evaluating the selectivity profile and target engagement of a covalent ERK1/2 probe tagged with a trans-cyclooctene group. The chem. probe was shown to bind covalently to Cys166 of ERK2 using protein MS and X-ray crystallog., and displayed submicromolar GI50s in A375 and HCT116 cells. In both cell lines, the probe demonstrated target engagement and a good selectivity profile at low concentrations, which was lost at higher concentrations The IEDDA cycloaddition enabled fast and quant. fluorescent tagging for readout with a high background-to-noise ratio and thereby provides a promising alternative to the commonly used copper catalyzed alkyne-azide cycloaddition

Molecular BioSystems published new progress about Click chemistry. 99469-85-9 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2S, Name: 4,5-Dichloro-2-(methylthio)pyrimidine.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Homon, Anton A.; Hryshchuk, Oleksandr V.; Trofymchuk, Serhii; Michurin, Oleg; Kuchkovska, Yuliya; Radchenko, Dmytro S.; Grygorenko, Oleksandr O. published the artcile< Synthesis of 3-Azabicyclo[3.2.0]heptane-Derived Building Blocks via [3+2] Cycloaddition>, Application In Synthesis of 6554-61-6, the main research area is azabicyclo heptane derivative; cyclobuteneraboxylic acid ester cycloaddition.

An efficient approach to synthesis of various substituted 3-azabicyclo[3.2.0]heptane-derived building blocks based on [3+2] cycloaddition of cyclobut-1-eneraboxylic acid ester and in situ generated azomethine ylide was developed and applied on multigram scale. The utility of 1,3-disubstituted 3-azabicyclo[3.2.0]heptane scaffold was demonstrated by addnl. structural anal. using exit vector plot (EVP) tool, and tested in parallel synthesis of compound library.

European Journal of Organic Chemistry published new progress about [3+2] Cycloaddition reaction. 6554-61-6 belongs to class pyrimidines, and the molecular formula is C4H2Cl2N2, Application In Synthesis of 6554-61-6.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Purkayastha, Subhasish; Lazrek, Bihi H.; Panzica, Raymond P.; Naguib, Fardos N. M.; El Kouni, Mahmoud H. published the artcile< as-Triazine acyclonucleosides: potential inhibitors of pyrimidine enzymes>, Synthetic Route of 4956-05-2, the main research area is triazine acyclonucleoside; nucleoside acyclo triazine; pyrimidine enzyme inhibitor acyclonucleoside.

Seven as-triazine-3,5-dione acyclonucleosides I (R = Ac, H, R1 = SCH2Ph, Br, H; R = H, R1 = NH2) were prepared starting with the alkylation of the corresponding O-trimethylsilylated as-triazine-3,5-diones with AcOCH2CH2OCH2Br. I were evaluated as inhibitors of orotate phosphoribosyltransferase (OPRTase, EC 2.4.2.10), orotidine 5′-monophosphate decarboxylase (ODCase, EC 4.1.2.23), uridine phosphorylase (UrdPase, EC 2.4.2.3), and thymidine phosphorylase (dThdPase, EC 2.4.2.4). I did not inhibit any of these enzymes.

Nucleosides & Nucleotides published new progress about 4956-05-2. 4956-05-2 belongs to class pyrimidines, and the molecular formula is C3H2BrN3O2, Synthetic Route of 4956-05-2.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Riederer, Heinz; Huettermann, Juergen; Symons, Martyn C. R. published the artcile< Matrix-isolation of free radicals from 5-halouracils. 2. Electron spin resonance of hydrogen atom reactions in acidic glasses>, Electric Literature of 4956-05-2, the main research area is hydrogen atom nucleic acid constituent; nucleoside hydrogen atom; nucleotide hydrogen atom; uracil hydrogen atom; ESR nucleic acid constituent; radical nucleic acid constituent.

The reaction of H· atoms produced in acidic glasses (H2SO4 and H3PO4) by radiolysis and photolysis with the nucleic acid constituents by uracil, thymine, and the row of 5-halo-substituted uracils as well as their nucleoside (nucleotide) derivatives and deoxyribose were studied by ESR spectroscopy. With the pyrimidines, addition at either site of the 5,6 double bond was the only reaction, the relative yield of 5-yl or 6-yl radicals depending largely on the nature of the nonhydrogen 5 or 6 substituent. The spectral parameters of both radical types were determined by spectra simulation. In deoxyribose, abstraction of a carbon-bound hydrogen takes place from probably only 2 initial sites, the corresponding radicals undergoing a fast and a slow secondary reaction. In nucleosides (nucleotides), the base and deoxyribose (deoxyribose phosphate) moiety react independently. The relative yield of both subgroup radicals was determined and explained in terms of a “”miss or react”” mechanism. The findings are discussed in terms of solid-state vs. liquid solution type reaction mechanisms.

Journal of Physical Chemistry published new progress about ESR (electron spin resonance). 4956-05-2 belongs to class pyrimidines, and the molecular formula is C3H2BrN3O2, Electric Literature of 4956-05-2.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia