pyrimidines | Page 372 of 1124

Horan, Alexandra M’s team published research in Organic Letters in 2021-12-03 | 3921-01-5

Organic Letters published new progress about Coupling reaction. 3921-01-5 belongs to class pyrimidines, and the molecular formula is C4H2Br2N2, Synthetic Route of 3921-01-5.

Horan, Alexandra M.; Duong, Vincent K.; McGarrigle, Eoghan M. published the artcile< Synthesis of Bis-heteroaryls Using Grignard Reagents and Pyridylsulfonium Salts>, Synthetic Route of 3921-01-5, the main research area is bis heteroaryl preparation; halopyridine pyridylsulfonium salt coupling reaction.

Herein ligand-coupling reactions of Grignard reagents with pyridylsulfonium salts I (R = H, Br, Me, trifluoromethyl; R1 = H, OMe, CN, Br, etc.; R2 = H, trifluoromethyl; R3 = H, Me; R2R3 = -(CH=CH-CH=CH)-) and phenyl(pyrimidin-2-yl)(p-tolyl)sulfonium trifluoromethanesulfonate are reported. The method has wide functional group tolerance and enables the formation of bis-heterocycle linkages including 2,4′-bipyridines, 2,3′-bipyridines, and 2,2′-bipyridines, as well as pyridines linked to pyrimidines, pyrazines, isoxazoles, and benzothiophenes II (R4 = 2-fluoropyridin-4-yl, pyrazin-2-yl, dimethyl-1,2-oxazol-4-yl, 1-benzothiophen-2-yl, etc.). The methodol. was successfully applied to the synthesis of the natural products caerulomycin A and E.

Organic Letters published new progress about Coupling reaction. 3921-01-5 belongs to class pyrimidines, and the molecular formula is C4H2Br2N2, Synthetic Route of 3921-01-5.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Mantymaki, Miia’s team published research in Chemistry of Materials in 2013-05-14 | 2244-11-3

Chemistry of Materials published new progress about Adhesive films. 2244-11-3 belongs to class pyrimidines, and the molecular formula is C4H4N2O5, Formula: C4H4N2O5.

Mantymaki, Miia; Hamalainen, Jani; Puukilainen, Esa; Sajavaara, Timo; Ritala, Mikko; Leskela, Markku published the artcile< Atomic layer deposition of LiF thin films from Lithd, Mg(thd)2, and TiF4 precursors>, Formula: C4H4N2O5, the main research area is atomic layer deposition lithium fluoride thin film precursor epitaxy; film adhesion.

Lithium fluoride is an interesting material because of its low refractive index and large band gap. Previously LiF thin films have been deposited mostly by phys. methods. In this study a new way of depositing thin films of LiF using at. layer deposition (ALD) is presented. Mg(thd)2(2,2,6,6-tetramethyl-3,5-heptanedionate) TiF4 and Lithd were used as precursors, and they produced crystalline LiF at a temperature range of 300-350 °C. The films were studied by UV-vis spectrometry, field emission SEM (FESEM), X-ray diffraction (XRD), at. force microscopy (AFM), time-of-flight elastic recoil detection anal. (ToF-ERDA), and energy dispersive X-ray spectroscopy (EDX). In addition, film adhesion was tested by a Scotch tape test. This method results in LiF films with a growth rate of approx. 1.4 Å per cycle. According to the ToF-ERDA measurements, the films are pure LiF with very small Mg and Ti impurities, the largest impurity being hydrogen with contents below 1 atom %.

Chemistry of Materials published new progress about Adhesive films. 2244-11-3 belongs to class pyrimidines, and the molecular formula is C4H4N2O5, Formula: C4H4N2O5.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Winkeler, Heinz Dieter’s team published research in Journal of Organic Chemistry in 1983-09-09 | 84955-32-8

Journal of Organic Chemistry published new progress about Nucleosides. 84955-32-8 belongs to class pyrimidines, and the molecular formula is C7H8N4O, Application of C7H8N4O.

Winkeler, Heinz Dieter; Seela, Frank published the artcile< Synthesis of 2-amino-7-(2'-deoxy-β-D-erythro-pentofuranosyl)-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one, a new isostere of 2'-deoxyguanosine>, Application of C7H8N4O, the main research area is pyrrolopyrimidine deoxynucleoside; deoxyerythropentofuranosylpyrrolopyrimidinone.

The title compound (I) was prepared by treating 2-amino-4-methoxypyrrolo[2,3-d]pyrimidine with the sugar II, acidifying to deacylate, and demethylating with 4-MeC6H4SNa.

Journal of Organic Chemistry published new progress about Nucleosides. 84955-32-8 belongs to class pyrimidines, and the molecular formula is C7H8N4O, Application of C7H8N4O.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Anderson, Neal G’s team published research in Organic Process Research & Development in 1997-08-31 | 5018-38-2

Organic Process Research & Development published new progress about Antidepressants. 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, SDS of cas: 5018-38-2.

Anderson, Neal G.; Ary, Thomas D.; Berg, James L.; Bernot, Peter J.; Chan, Yeung Y.; Chen, Chien-Kuang; Davies, Merrill L.; DiMarco, John D.; Dennis, Ronald D.; Deshpande, Rajan P.; Do, Hoang D.; Droghini, Roberto; Early, William A.; Gougoutas, Jack Z.; Grosso, John A.; Harris, John C.; Haas, Oscar W.; Jass, Paul A.; Kim, Daniel H.; Kodersha, Gus A.; Kotnis, Atul S.; LaJeunesse, Jean; Lust, David A.; Madding, Gary D.; Modi, Sandeep P.; Moniot, Jerome L.; Nguyen, Andrew; Palaniswamy, Venkatapuram; Phillipson, Douglas W.; Simpson, James H.; Thoraval, Dominique; Thurston, David A.; Tse, Kai; Polomski, Robert E. published the artcile< Process Development of 5-Fluoro-3-[3-[4-(5-methoxy-4-pyrimidinyl)-1- piperazinyl]propyl]-1H-indole Dihydrochloride>, SDS of cas: 5018-38-2, the main research area is fluoromethoxy pyrimidinyl piperazinylpropyl indole dihydrochloride synthesis; antidepressant fluoromethoxypyrimidinyl piperazinylpropyl indole dihydrochloride preparation.

5-Fluoro-3-[3-[4-(5-methoxy-4-pyrimidinyl)-1-piperazinyl]propyl]-1H-indole dihydrochloride (1) facilitates 5-HT neurotransmission and was an antidepressant drug candidate. The development of a safe, rugged process for the large-scale, chromatog.-free preparation of this compound is described. The main areas of optimization included a Fischer indole synthesis, preparation and chlorination of a monohydroxypyrimidine, and coupling of the resultant fragments to prepare the drug substance.

Organic Process Research & Development published new progress about Antidepressants. 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, SDS of cas: 5018-38-2.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Fun, Hoong-Kun’s team published research in Acta Crystallographica, Section E: Structure Reports Online in 2010-02-28 | 5018-38-2

Acta Crystallographica, Section E: Structure Reports Online published new progress about Crystal structure. 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, SDS of cas: 5018-38-2.

Fun, Hoong-Kun; Yeap, Chin Sing; Chidan Kumar, C. S.; Yathirajan, H. S.; Siddegowda, M. S. published the artcile< 4,6-Dichloro-5-methoxypyrimidine>, SDS of cas: 5018-38-2, the main research area is crystal structure dichloromethoxypyrimidine; mol structure chloromethoxypyrimidine; pyrimidine dichloromethoxy crystal mol structure.

The mol. of 4,6-dichloro-5-methoxypyrimidine, C5H4Cl2N2O, is close to being planar (root-mean-square deviation = 0.013 Å), apart from the C atom of the methoxy group, which deviates by 1.082(2) Å from the mean plane of the other atoms. In the crystal, short Cl···N contacts [3.0940(15) and 3.1006(17) Å] generate a 3-dimensional framework. Crystallog. data are given.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Rosemeyer, Helmut’s team published research in International Journal of Biological Macromolecules in 1987-08-31 | 84955-32-8

International Journal of Biological Macromolecules published new progress about Enzyme kinetics. 84955-32-8 belongs to class pyrimidines, and the molecular formula is C7H8N4O, Related Products of 84955-32-8.

Rosemeyer, Helmut; Kaiser, Klaus; Seela, Frank published the artcile< Dextran-linked 7-deazaguanine - a polymer-bound inhibitor of xanthine oxidase>, Related Products of 84955-32-8, the main research area is xanthine oxidase deazaguanine dextran inhibitor; immobilized deazaguanine xanthine oxidase inhibition.

Dextran-linked 7-deazaguanine as well as 7-deazahypoxanthine and allopurinol derivatives were prepared by carbodiimide condensation of the 2-carboxyethyl intermediates with N-(6-aminohexyl)carbamoylmethylated dextran T80. The dextran-linked bases are degradable by endo-dextranase (EC 3.2.1.11) as demonstrated by time-dependent viscosity measurements. Monomeric as well as polymer-linked purine analogs were tested as inhibitors of xanthine oxidase (EC 1.2.3.1) from cow’s milk. Whereas the allopurinol- and 7-deazahypoxanthine derivatives no longer bind to the enzyme, the 7-deazaguanine derivatives are strong competitive inhibitors of xanthine oxidase even in the polymer-linked state.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Beck, Hartmut’s team published research in ChemMedChem in 2018 | 5018-38-2

ChemMedChem published new progress about Anemia (chronic kidney disease associated). 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, HPLC of Formula: 5018-38-2.

Beck, Hartmut; Jeske, Mario; Thede, Kai; Stoll, Friederike; Flamme, Ingo; Akbaba, Metin; Ergueden, Jens-Kerim; Karig, Gunter; Keldenich, Joerg; Oehme, Felix; Militzer, Hans-Christian; Hartung, Ingo V.; Thuss, Uwe published the artcile< Discovery of Molidustat (BAY 85-3934): A Small-Molecule Oral HIF-Prolyl Hydroxylase (HIF-PH) Inhibitor for the Treatment of Renal Anemia>, HPLC of Formula: 5018-38-2, the main research area is diheteroaryldihydropyrazolone preparation HIF prolyl hydroxylase inhibitor kidney disease anemia; molidustat BAY3934 preparation HIF prolyl hydroxylase inhibitor kidney anemia; BAY 85-3934; HIF-PH; inhibitors; metalloenzymes; molidustat.

Small-mol. inhibitors of hypoxia-inducible factor prolyl hydroxylases (HIF-PHs) are currently under clin. development as novel treatment options for chronic kidney disease (CKD) associated anemia. Inhibition of HIF-PH mimics hypoxia and leads to increased erythropoietin (EPO) expression and subsequently increased erythropoiesis. Herein the authors describe the discovery, synthesis, structure-activity relationship (SAR), and proposed binding mode of novel 2,4-diheteroaryl-1,2-dihydro-3H-pyrazol-3-ones as orally bioavailable HIF-PH inhibitors for the treatment of anemia. High-throughput screening of the authors’ corporate compound library identified BAY-908 as a promising hit. The lead optimization program then resulted in the identification of molidustat (BAY 85-3934), a novel small-mol. oral HIF-PH inhibitor. Molidustat is currently being investigated in clin. phase III trials as molidustat sodium for the treatment of anemia in patients with CKD.

ChemMedChem published new progress about Anemia (chronic kidney disease associated). 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, HPLC of Formula: 5018-38-2.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Suwal, Sujit’s team published research in New Journal of Chemistry in 2022 | 89793-12-4

New Journal of Chemistry published new progress about Amino esters Role: SPN (Synthetic Preparation), PREP (Preparation). 89793-12-4 belongs to class pyrimidines, and the molecular formula is C7H7ClN2O2, Recommanded Product: Ethyl 2-chloropyrimidine-5-carboxylate.

Suwal, Sujit; Rahman, Mahmuda; O’Brien, Gregory; Karambizi, Victoire G.; Wrotny, Matthew; Scott Goodman, M. published the artcile< Chemo-selective syntheses of N-t-boc-protected amino ester analogs through Buchwald-Hartwig amination>, Recommanded Product: Ethyl 2-chloropyrimidine-5-carboxylate, the main research area is amino ester preparation chemoselective; heterocyclic halo ester amine Buchwald Hartwig amination.

Synthesis of N-protected amino esters, e.g., I is achieved via a chemo-selective Buchwald Hartwig cross-coupling reaction using PEPPSI-IPr Pd-catalyst. Nearly two dozen functionally and structurally diverse mols. are created by individually cross-coupling eight II (R = Me, Et; Y = CH, N; X = Cl, Br) and three different secondary amines, e.g., tert-Bu piperazine-1-carboxylate. It was the observed that product formation is more facile in those heterocyclic esters II where nitrogen is present ortho to the halo substituent in the heteroaromatic ring. Based on this observation, a possible intermediate step in the cross-coupling cycle is proposed, where the nitrogen electron lone pair in the heterocycle may play an important role leading to a higher reaction yield.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Angst, Daniela’s team published research in Journal of Medicinal Chemistry in 2020-05-28 | 5018-38-2

Journal of Medicinal Chemistry published new progress about Anti-inflammatory agents. 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, Synthetic Route of 5018-38-2.

Angst, Daniela; Gessier, Francois; Janser, Philipp; Vulpetti, Anna; Walchli, Rudolf; Beerli, Christian; Littlewood-Evans, Amanda; Dawson, Janet; Nuesslein-Hildesheim, Barbara; Wieczorek, Grazyna; Gutmann, Sascha; Scheufler, Clemens; Hinniger, Alexandra; Zimmerlin, Alfred; Funhoff, Enrico G.; Pulz, Robert; Cenni, Bruno published the artcile< Discovery of LOU064 (Remibrutinib), a Potent and Highly Selective Covalent Inhibitor of Bruton's Tyrosine Kinase>, Synthetic Route of 5018-38-2, the main research area is LOU064 remibrutinib Bruton tyrosine kinase inhibitor autoimmune diseases antiinflammatory.

Bruton’s tyrosine kinase (BTK), a cytoplasmic tyrosine kinase, plays a central role in immunity and is considered an attractive target for treating autoimmune diseases. The use of currently marketed covalent BTK inhibitors is limited to oncol. indications based on their suboptimal kinase selectivity. We describe the discovery and preclin. profile of LOU064 (remibrutinib, 25), a potent, highly selective covalent BTK inhibitor. LOU064 exhibits an exquisite kinase selectivity due to binding to an inactive conformation of BTK and has the potential for a best-in-class covalent BTK inhibitor for the treatment of autoimmune diseases. It demonstrates potent in vivo target occupancy with an EC90 of 1.6 mg/kg and dose-dependent efficacy in rat collagen-induced arthritis. LOU064 is currently being tested in phase 2 clin. studies for chronic spontaneous urticaria and Sjoegren’s syndrome.

Journal of Medicinal Chemistry published new progress about Anti-inflammatory agents. 5018-38-2 belongs to class pyrimidines, and the molecular formula is C5H4Cl2N2O, Synthetic Route of 5018-38-2.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Wodynski, Artur’s team published research in Journal of Physical Chemistry A in 2015-01-22 | 3921-01-5

Journal of Physical Chemistry A published new progress about Magnetic relaxation (13C). 3921-01-5 belongs to class pyrimidines, and the molecular formula is C4H2Br2N2, Application of C4H2Br2N2.

Wodynski, Artur; Kraska-Dziadecka, Anna; Kubica, Dominika; Gryff-Keller, Adam published the artcile< Interpretation of the Longitudinal 13C Nuclear Spin Relaxation and Chemical Shift Data for Five Bromoazaheterocycles Supported by Nonrelativistic and Relativistic DFT Calculations>, Application of C4H2Br2N2, the main research area is longitudinal carbon nuclear spin relaxation chem shift bromoazaheterocycle.

The longitudinal relaxation times of 13C nuclei and NOE enhancement factors for 2-bromopyridine (1), 6-bromo-9-methylpurine (2), 3,5-dibromopyridine (3), 2,4-dibromopyrimidine (4), and 2,4,6-tribromopyrimidine (5) were measured at 25° and B0 = 11.7 T. The most important contributions to the overall relaxation rates of nonbrominated carbons, i.e., the relaxation rates due to the 13C-1H dipolar interactions and the shielding anisotropy mechanism, were separated out. For 3 and 5, addnl., the T2,q(14N) values were established from 14N NMR line widths. All of these data were used to determine rotational diffusion tensors for the studied mols. The measured saturation recovery curves of brominated carbons were decomposed into two components to yield relaxation times, which after proper corrections provided parameters characterizing the scalar relaxation of the 2nd kind for 13C nuclei of 79Br- and 81Br-bonded carbons. These parameters and theor. calculated quadrupole coupling constants for Br nuclei have allowed the values of 1-bond 13C-79Br spin-spin coupling constants to be calculated Independently, the coupling constants and magnetic shielding constants of the C nuclei were calculated theor. using the nonrelativistic and relativistic DFT methods F/6-311++G(2d,p)/PCM and so-ZORA/F/TZ2P/COSMO (F = BHandH or B3LYP), resp. The agreement between the exptl. and theor. values of these parameters is remarkably dependent on the theor. method used.

Journal of Physical Chemistry A published new progress about Magnetic relaxation (13C). 3921-01-5 belongs to class pyrimidines, and the molecular formula is C4H2Br2N2, Application of C4H2Br2N2.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia