Pyrazines

Recently I am researching about CYTOCHROME BC(1) COMPLEX; IRON-SULFUR PROTEIN; BC1 COMPLEX; DISCOVERY; SITE; FUNGICIDE; AMETOCTRADIN; RESISTANCE; MECHANISM; BINDING, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21502062]; Scientific Research Program Guiding Project of Hubei Provincial Department of Education [B2019135]; Teachers’ Scientific Research Ability Cultivation Fund, Hubei University of Arts and Science (Natural Science) [2018kypy001]; Open Foundation of Discipline of Hubei University of Arts and Science [XK2019038, XK2019039]. Application In Synthesis of Pyrazine-2-carboxylic acid. Published in PERGAMON-ELSEVIER SCIENCE LTD in OXFORD ,Authors: Cheng, H; Yang, L; Liu, HF; Zhang, R; Chen, C; Wu, Y; Jiang, W. The CAS is 98-97-5. Through research, I have a further understanding and discovery of Pyrazine-2-carboxylic acid

Mitochondrial complex III is one of the most promising targets for a number of pharmaceuticals and fungicides. Due to the wide-spread use of complex III-inhibiting fungicides, a considerable increase of resistance has occurred worldwide. Therefore, inhibitors with novel scaffolds and potent activity against complex III are still in great demand. In this article, a new series of amide compounds bearing the diaryl ether scaffold were designed and prepared, followed by the biological evaluation. Gratifyingly, several compounds demonstrated potent activity against succinate-cytochrome c reductase (SCR, a mixture of mitochondrial complex II and complex III), with compound 3w possessing the best inhibitory activity (IC50 = 0.91 +/- 0.09 mu mol/L). Additional studies verified that 3w was a new inhibitor of complex III. Moreover, computational simulations elucidated that 3w should bind to the Q(o) site of complex III. We believe this work will be valuable for the preparation and discovery of more complex III inhibitors.

Application In Synthesis of Pyrazine-2-carboxylic acid. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Cheng, H; Yang, L; Liu, HF; Zhang, R; Chen, C; Wu, Y; Jiang, W or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Recommanded Product: Pyrazine-2-carboxylic acid. Kojima, K; Yakushiji, F; Katsuyama, A; Ichikawa, S in [Ichikawa, Satoshi] Hokkaido Univ, Global Inst Collaborat Res & Educ GI CoRE, Fac Pharmaceut Sci, Ctr Res & Educ Drug Discovery, Sapporo, Hokkaido 0600812, Japan; [Ichikawa, Satoshi] Hokkaido Univ, Global Inst Collaborat Res & Educ GI CoRE, Global Stn Biostofaces & Drug Discovery, Sapporo, Hokkaido 0600812, Japan; [Kojima, Keita; Yakushiji, Fumika; Katsuyama, Akira] Hokkaido Univ, Fac Pharmaceut Sci, Sapporo, Hokkaido 0600812, Japan; [Yakushiji, Fumika; Katsuyama, Akira] Hokkaido Univ, Fac Pharmaceut Sci, Ctr Res & Educ Drug Discovery, Sapporo, Hokkaido 0600812, Japan published Total Synthesis of Echinomycin and Its Analogues in 2020, Cited 32. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5.

The first total synthesis of echinomycin (1) was accomplished by featuring the late-stage construction of the thioacetal moiety via Pummerer rearrangement and simultaneous cyclization, as well as two-directional elongation of the peptide chains to construct a C2-symmetrical bicyclic octadecadepsipeptide bridged with a sulfide linkage. This strategy can be applicable to a variety of echinomycin analogues.

About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Kojima, K; Yakushiji, F; Katsuyama, A; Ichikawa, S or concate me.. Recommanded Product: Pyrazine-2-carboxylic acid

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

In 2021 TETRAHEDRON LETT published article about C-H BOND; PALLADIUM-CATALYZED TRIFLUOROMETHYLATION; FLUORINATION; ALKENES; FUNCTIONALIZATION; ARYL; ACTIVATION; EFFICIENT; AMINOTRIFLUOROMETHYLATION; PERFLUOROALKYLATION in [Wang, Kai; Zhang, Changjun; Xie, Yuanyuan] Zhejiang Univ Technol, Collaborat Innovat Ctr Yangtze River Delta Reg Gr, Hangzhou 310014, Peoples R China; [Hou, Jiahao; Wei, Tingting; Bai, Renren; Xie, Yuanyuan] Zhejiang Univ Technol, Coll Pharmaceut Sci, Hangzhou 310014, Peoples R China in 2021, Cited 74. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5. SDS of cas: 98-97-5

An eco-friendly and effective electrochemical process was developed for the ortho-trifluoromethylation of arylamines using CF3SO2Na as the trifluoromethyl source, affording the desired products in moderate to good yields with high regioselectivity under mild reaction conditions. Importantly, the requirement for both transition metals and oxidants utilized in previous methods were avoided. A radical mechanism was proposed on the basis of various control experiments. (C) 2020 Elsevier Ltd. All rights reserved.

About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Wang, K; Hou, JH; Wei, TT; Zhang, CJ; Bai, RR; Xie, YY or concate me.. SDS of cas: 98-97-5

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

In 2020 EUR J MED CHEM published article about CARDIAC-SPECIFIC KINASE; DUAL INHIBITORS; DESIGN; OVEREXPRESSION; MECHANISMS; DISEASE; CARDIOPROTECTION; ANTHOCYANINS; CLEAVAGE; AGENTS in [Pang, Haiying; Wang, Ning; Chai, Jinlong; Wang, Xiaoyun; Zhang, Yuehua; Bi, Zhiang; He, Gu] Sichuan Univ, West China Hosp, State Key Lab Biotherapy, Chengdu 610041, Sichuan, Peoples R China; [Pang, Haiying; Wang, Ning; Chai, Jinlong; Wang, Xiaoyun; Zhang, Yuehua; Bi, Zhiang; He, Gu] Sichuan Univ, West China Hosp, Canc Ctr, Chengdu 610041, Sichuan, Peoples R China; [Pang, Haiying; Wang, Ning; Chai, Jinlong; Wang, Xiaoyun; Zhang, Yuehua; Bi, Zhiang; He, Gu] Collaborat Innovat Ctr, Chengdu 610041, Sichuan, Peoples R China; [Wu, Wenbin] Chongzhou Peoples Hosp, Dept Neurol, Chengdu 611230, Peoples R China in 2020, Cited 49. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5. Category: Pyrazines

Myocardial infarction (MI) injury is a highly lethal syndrome that has, until recently, suffered from a lack of clinically efficient targeted therapeutics. The cardiac troponin I interacting kinase (TNNI3K) exacerbates ischemia-reperfusion (IR) injury via oxidative stress, thereby promoting cardiomyocyte death. In this current study, we designed and synthesized 35 novel TNNI3K inhibitors with a pyrido[4,5]thieno [2,3-d] pyrimidine scaffold. In vitro results indicated that some of the inhibitors exhibited sub-micromolar TNNI3K inhibitory capacity and good kinase selectivity, as well as cytoprotective activity, in an oxygen-glucose deprivation (OGD) injury cardiomyocyte model. Furthermore, investigation of the mechanism of the representative derivative compound 6o suggested it suppresses pyroptosis and apoptosis in cardiomyocytes by interfering with p38MAPK activation, which was further confirmed in a murine myocardial infarction injury model. In vivo results indicate that compound 6o can markedly reduce myocardial infarction size and alleviate cardiac tissue damage in rats. In brief, our results provide the basis for further development of novel TNNI3K inhibitors for targeted MI therapy. (C) 2020 Elsevier Masson SAS. All rights reserved.

Category: Pyrazines. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Pang, HY; Wang, N; Chai, JL; Wang, XY; Zhang, YH; Bi, Z; Wu, WB; He, G or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

I found the field of Chemistry; Engineering very interesting. Saw the article The role of nanoporous carbon materials in catalytic cyclohexane oxidation published in 2020. Recommanded Product: 98-97-5, Reprint Addresses Martins, LMDRS (corresponding author), Univ Lisbon, Ctr Quim Estrutural, IST, P-1049001 Lisbon, Portugal.; Carvalho, AP (corresponding author), Univ Lisbon, Fac Ciencias, Ctr Quim & Bioquim, P-1749016 Lisbon, Portugal.; Carvalho, AP (corresponding author), Univ Lisbon, Fac Ciencias, Ctr Quim Estrutural, P-1749016 Lisbon, Portugal.. The CAS is 98-97-5. Through research, I have a further understanding and discovery of Pyrazine-2-carboxylic acid

The C-scorpionate iron(II) complex [FeCl2(Tpm)] [Tpm = kappa(3)-HC(C3H3N2)(3)] was immobilized on three nanoporous carbon supports to produce active, selective and recyclable catalysts for the oxidation of cyclohexane. The influence of the porous carbon supports on the performance of the heterogenized [FeCl2(Tpm)] catalyst was investigated using materials with distinct porosity: microporous (GL50-ox, wet oxidized GL50 Norit sample, and S, sisal-derived activated carbon prepared by chemical activation), and mesoporous (CMK-3) materials. The heterogenized systems exhibited good activity and rather high selectivity to the formation of KA (ketone-alcohol) oil (cyclohexanol and cyclohexanone mixture) from microwave-assisted oxidation of cyclohexane, and allowed their easy recovery and reuse, at least for four consecutive cycles. The most important outcome of this work was the significant self-catalytic activity observed for the pristine carbon materials GL50-ox and CMK-3 towards cyclohexane oxidation under Microwave irradiation, in the absence of the iron complex.

Recommanded Product: 98-97-5. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Andrade, MA; Mestre, AS; Carvalho, AP; Pombeiro, AJL; Martins, LMDRS or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Name: Pyrazine-2-carboxylic acid. Authors Swiderski, G; Kalinowska, M; Jablonska-Trypuc, A; Wolejko, E; Wydro, U; Lyszczek, R; Rusinek, I; Lewandowski, W in ELSEVIER published article about in [Swiderski, Grzegorz; Kalinowska, Monika; Jablonska-Trypuc, Agata; Wolejko, Elzbieta; Wydro, Urszula; Lewandowski, Wlodzimierz] Bialystok Tech Univ, Dept Chem Biol & Biotechnol, Wiejska 45E St, PL-15351 Bialystok, Poland; [Lyszczek, Renata; Rusinek, Iwona] UMCS, Dept Gen & Coordinat Chem, MC Sklodowska Sq 2, PL-20031 Lublin, Poland in 2021, Cited 50. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5

Diazinecarboxylic acids (pyridazine-3-carboxylic, pyridazine-4-carboxylic, pyrimidine-2-carboxylic, pyrimidine-4-carboxylic, pyrimidine-5-carboxylic and pyrazine-2-carboxylic acids) were characterized by means of spectroscopic (FT-Raman, FTIR, UV, (HNMR)-H-1, (CNMR)-C-13) and thermogravimetric analysis as well as antimicrobial and cytotoxic tests. The structures of diazinecarboxylic acids were calculated by the DFT method (B3LYP/6-311G(d, p). For the most stable conformers, the energy of HOMO and LUMO molecular orbitals, the geometric (HOMA, GEO, EN, I6) and magnetic (NICS) aromaticity indices, NBO electronic charge distribution, sEDA and pEDA indexes, Wiberg Bond Order, Wiberg Index and theoretical IR and NMR spectra have been calculated. The energies of protonating and deprotonating acids were also calculated. The effect of the nitrogen heteroatom position in the aromatic ring in relation to the position of the carboxyl group on the electronic charge distribution, thermal stability, antimicrobial and cytotoxicity activities of the examined acids was determined. Antimicrobial activity of tested acids against of Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosaand Candida albicanswas calculated based on MTT colorimetric assay (MCA). The cytotocic effect of diazynecarboxylic acids was examined in A375 melanoma cell line and DLD-1 cell line. A biplot analysis was performed in order to determine the correlations between selected parameters of the tested compounds and relative cell viability of E. coli, B. subtilis, P. aeruginosa, C. albicans, A375 and DLD-1 cell lines. Thermal behaviour of all investigated carboxylic acids was investigated using thermogravimetry (TG) and differential scanning calorimetry (DSC) techniques in flowing air atmosphere. All compounds are stable in room temperature. (C) 2021 Elsevier B.V. All rights reserved.

Name: Pyrazine-2-carboxylic acid. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Swiderski, G; Kalinowska, M; Jablonska-Trypuc, A; Wolejko, E; Wydro, U; Lyszczek, R; Rusinek, I; Lewandowski, W or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

An article Cu(II)-Mediated N-H and N-Alkyl Aryl Amination and Olefin Aziridination WOS:000461843900081 published article about C-H; STEREOSPECIFIC SYNTHESIS; ELECTROPHILIC AMINATION; CATALYZED AMINATION; BONDS in [Munnuri, Sailu; Anugu, Raghunath Reddy; Falck, John R.] Univ Texas Southwestern Med Ctr Dallas, Dept Biochem, Div Chem, Dallas, TX 75390 USA in 2019, Cited 32. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5. Category: Pyrazines

Cu(II)-mediated direct NH2 and NH alkyl aryl aminations and olefin aziridinations are described. These room temperature, one-pot, environmentally friendly procedures replace costly Rh-2 catalysts and, in some instances, display important differences with comparable Rh-2- and Fe-supported reactions.

Category: Pyrazines. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Munnuri, S; Anugu, RR; Falck, JR or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Name: Pyrazine-2-carboxylic acid. Authors Alsayed, SSR; Lun, SC; Payne, A; Bishai, WR; Gunosewoyo, H in WILEY published article about in [Alsayed, Shahinda S. R.; Gunosewoyo, Hendra] Curtin Univ, Fac Hlth Sci, Sch Pharm & Biomed Sci, Perth, WA, Australia; [Lun, Shichun; Bishai, William R.] Johns Hopkins Sch Med, Dept Med, Ctr TB Res, Div Infect Dis, Baltimore, MD 21205 USA; [Payne, Alan] Curtin Univ, Sch Mol & Life Sci, Perth, WA, Australia; [Bishai, William R.] Howard Hughes Med Inst, Chevy Chase, MD USA in 2021, Cited 54. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5

Several rationally designed isoniazid (INH), pyrazinamide (PZA) and ciprofloxacin (CPF) derivatives were conveniently synthesized and evaluated in vitro against H37Rv Mycobacterium tuberculosis (M. tb) strain. CPF derivative 16 displayed a modest activity (MIC = 16 mu g/ml) and was docked into the M. tb DNA gyrase. Isoniazid-pyrazinoic acid (INH-POA) hybrid 21a showed the highest potency in our study (MIC = 2 mu g/ml). It also retained its high activity against the other tested M. tb drug-sensitive strain (DS) V4207 (MIC = 4 mu g/ml) and demonstrated negligible cytotoxicity against Vero cells (IC50 >= 64 mu g/ml). Four tested drug-resistant (DR) M. tb strains were refractory to 21a, similar to INH, whilst being sensitive to CPF. Compound 21a was also inactive against two non-tuberculous mycobacterial (NTM) strains, suggesting its selective activity against M. tb. The noteworthy activity of 21a against DS strains and its low cytotoxicity highlights its potential to treat DS M. tb.

Name: Pyrazine-2-carboxylic acid. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Alsayed, SSR; Lun, SC; Payne, A; Bishai, WR; Gunosewoyo, H or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Recommanded Product: Pyrazine-2-carboxylic acid. In 2020 EUR J MED CHEM published article about NONCOVALENT; APOPTOSIS; PATHWAY; POTENT in [Sun, Qi; Zhou, Tongliang; Xi, Dandan; Li, Xiaona; Lu, Zirui; Xu, Fengrong; Wang, Chao; Niu, Yan; Xu, Ping] Peking Univ, Sch Pharmaceut Sci, Dept Med Chem, Hlth Sci Ctr, Beijing 100191, Peoples R China; [Sun, Qi] Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, BNLMS, Beijing 100871, Peoples R China in 2020, Cited 31. The Name is Pyrazine-2-carboxylic acid. Through research, I have a further understanding and discovery of 98-97-5.

A series of tripeptidic proteasome inhibitors with furylketone as C-terminus were designed and synthesized. Biochemical evaluations against beta 1, beta 2 and beta 5 subunits revealed that they acted selectively on beta 5 subunit with IC(50)s against chymotrypsin-like (CT-L) activity in micromolar range. LC-MS/MS analysis of the ligand-20S proteasome mixture showed that the most potent compound 11m (IC50 = 0.18 mu M) made no covalent modification on 20S proteasome. However, it was identified acting in a slowly reversible manner in wash-out assay and the reversibility was much lower than that of MG132, suggesting the possibility of these tripeptidic furylketones forming reversible covalent bonds with 20S proteasome. Several compounds were selected for anti-proliferative assay towards multiple cancer cell lines, and compound 11m displayed comparable potency to positive control (MG132) in all cell lines tested. Furthermore, the pharmacokinetic (PK) data in rats indicated 11m behaved similarly (C-max, 2007 mu g/L; AUC(0-t), 680 mu g/L.h; V-ss, 0.66 L/kg) to the clinical used agent carfilzomib. All these data suggest 11m is a good lead compound to be developed to novel anti-tumor agent. (c) 2020 Elsevier Masson SAS. All rights reserved.

About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Sun, Q; Zhou, TL; Xi, DD; Li, XN; Lu, ZR; Xu, FR; Wang, C; Niu, Y; Xu, P or concate me.. Recommanded Product: Pyrazine-2-carboxylic acid

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem

Name: Pyrazine-2-carboxylic acid. I found the field of Pharmacology & Pharmacy very interesting. Saw the article Design, synthesis and anti-inflammatory evaluation of 3-amide benzoic acid derivatives as novel P2Y(14) receptor antagonists published in 2019, Reprint Addresses Jiang, C (corresponding author), China Pharmaceut Univ, Jiang Su Key Lab Drug Design & Optimizat, Tongjiaxiang 24, Nanjing 210009, Jiangsu, Peoples R China.; Hu, QH (corresponding author), China Pharmaceut Univ, Key Lab Drug Metab & Pharmacokinet, Tongjiaxiang 24, Nanjing 210009, Jiangsu, Peoples R China.. The CAS is 98-97-5. Through research, I have a further understanding and discovery of Pyrazine-2-carboxylic acid.

The P2Y(14) receptor (P2Y(14)R) plays a key role in the modulation of inflammatory process, but very few classes of antagonists have been reported. A series of 3-amide benzoic acid derivatives were identified as novel and potent P2Y(14)R antagonists. The most potent antagonist, 16c, showed comparable activity (IC50 = 1.77 nM) to PPTN, the most potent P2Y(14)R antagonist reported. Compound 16c demonstrated dramatically improved aqueous solubility and excellent metabolic stability in rat and human microsomes. Investigation of the anti-inflammatory effect of 16c was performed in MSU treated THP-1 cells by flow cytometry, Western Blot and immunofluorescence labeling technology, which exhibited that 16c might be a promising candidate for further research. (C) 2019 Elsevier Masson SAS. All rights reserved.

Name: Pyrazine-2-carboxylic acid. About Pyrazine-2-carboxylic acid, If you have any questions, you can contact Zhang, ZG; Hao, K; Li, HW; Lu, R; Liu, CX; Zhou, MZ; Li, BY; Meng, ZB; Hu, QH; Jiang, C or concate me.

Reference:
Patent; Chevron Research Company; US4732894; (1988); A;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem