Day: April 6, 2021

Chemistry is an experimental science, Application In Synthesis of 6-Chloropyrimidine-2,4(1H,3H)-dione, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 4270-27-3, Name is 6-Chloropyrimidine-2,4(1H,3H)-dione, molecular formula is C4H3ClN2O2, belongs to pyrimidines compound. In a document, author is Ou, Zhihua.

A Path toward SARS-CoV-2 Attenuation: Metabolic Pressure on CTP Synthesis Rules the Virus Evolution

In the context of the COVID-19 pandemic, we describe here the singular metabolic background that constrains enveloped RNA viruses to evolve toward likely attenuation in the long term, possibly after a step of increased pathogenicity. Cytidine triphosphate (CTP) is at the crossroad of the processes allowing SARS-CoV-2 to multiply, because CTP is in demand for four essential metabolic steps. It is a building block of the virus genome, it is required for synthesis of the cytosine-based liponucleotide precursors of the viral envelope, it is a critical building block of the host transfer RNAs synthesis and it is required for synthesis of dolichol-phosphate, a precursor of viral protein glycosylation. The CCA 3′-end of all the transfer RNAs required to translate the RNA genome and further transcripts into the proteins used to build active virus copies is not coded in the human genome. It must be synthesized de novo from CTP and ATP. Furthermore, intermediary metabolism is built on compulsory steps of synthesis and salvage of cytosine-based metabolites via uridine triphosphate that keep limiting CTP availability. As a consequence, accidental replication errors tend to replace cytosine by uracil in the genome, unless recombination events allow the sequence to return to its ancestral sequences. We document some of the consequences of this situation in the function of viral proteins. This unique metabolic setup allowed us to highlight and provide a raison d’etre to viperin, an enzyme of innate antiviral immunity, which synthesizes 3′-deoxy-3′,4′-didehydro-CTP as an extremely efficient antiviral nucleotide.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 4270-27-3. Application In Synthesis of 6-Chloropyrimidine-2,4(1H,3H)-dione.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 274693-26-4, Name is 2-(((3aR,4S,6R,6aS)-6-(7-(((1R,2S)-2-(3,4-Difluorophenyl)cyclopropyl)amino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl)-2,2-dimethyltetrahydro-3aH-cyclopenta[d][1,3]dioxol-4-yl)oxy)ethanol, molecular formula is C26H32F2N6O4S. In an article, author is Hirabara, Sandro Massao,once mentioned of 274693-26-4, COA of Formula: C26H32F2N6O4S.

Host cell glutamine metabolism as a potential antiviral target

A virus minimally contains a nucleic acid genome packaged by a protein coat. The genome and capsid together are known as the nucleocapsid, which has an envelope containing a lipid bilayer (mainly phospholipids) originating from host cell membranes. The viral envelope has transmembrane proteins that are usually glycoproteins. The proteins in the envelope bind to host cell receptors, promoting membrane fusion and viral entry into the cell. Virus-infected host cells exhibit marked increases in glutamine utilization and metabolism. Glutamine metabolism generates ATP and precursors for the synthesis of macromolecules to assemble progeny viruses. Some compounds derived from glutamine are used in the syn thesis of purines and pyrimidines. These latter compounds are precursors for the synthesis of nucleotides. Inhibitors of glutamine transport and metabolism are potential candidate antiviral drugs. Glutamine is also an essential nutrient for the functions of leukocytes (lymphocyte, macrophage, and neutrophil), including those in virus-infected patients. The increased glutamine requirement for immune cell functions occurs concomitantly with the high glutamine utilization by host cells in virus-infected patients. The development of antiviral drugs that target glutamine metabolism must then be specifically directed at virus-infected host cells to avoid negative effects on immune functions. Therefore, the aim of this review was to describe the landscape of cellular glutamine metabolism to search for potential candidates to inhibit glutamine transport or glutamine metabolism.

Interested yet? Keep reading other articles of 274693-26-4, you can contact me at any time and look forward to more communication. COA of Formula: C26H32F2N6O4S.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 873-83-6, Name is 6-Aminopyrimidine-2,4(1H,3H)-dione, SMILES is O=C1NC(C=C(N)N1)=O, belongs to pyrimidines compound. In a document, author is Notomi, Ryotaro, introduce the new discover, Application In Synthesis of 6-Aminopyrimidine-2,4(1H,3H)-dione.

Synthesis of C-nucleoside analogues based on the pyrimidine skeleton for the formation of anti-parallel-type triplex DNA with a CG mismatch site

The triplex DNA forming method is an attractive tool as a gene-targeting agent. Using artificial nucleoside analogues based on C-nucleoside, stable and selective triplex DNA can be formed in a specific region of duplex DNA, and its biotechnology applications will greatly expand. In this study, we designed and synthesized novel C-nucleoside analogues based on the pyrimidine skeleton, (3Me)AP-d(Y-Cl) and (3Me)AP-d(Y-H), capable of recognizing a CG mismatch site that is not recognized by natural nucleosides. After incorporating them into the oligonucleotides, their triplex forming abilities were evaluated by gel-shift assay. Although it was only one sequence, the 3′-GZG-5′ sequence, the stability of the CG mismatch site recognition was greatly improved compared with previous nucleoside analogues.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 873-83-6 is helpful to your research. Application In Synthesis of 6-Aminopyrimidine-2,4(1H,3H)-dione.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 65-71-4, Name is 5-Methylpyrimidine-2,4(1H,3H)-dione, SMILES is O=C1NC(C(C)=CN1)=O, belongs to pyrimidines compound. In a document, author is Gong, Yi-Lin, introduce the new discover, Computed Properties of C5H6N2O2.

Synthesis, Crystal Structure and Biological Activity of 7-(4-Methylpiperazin-1-Yl)-5-[4-(Trifluoromethyl)Phenyl]pyrazolo[1,5-a]Pyrimidine-3-Carbonitrile

The title compound C19H17F3N6 was synthesized and structurally characterized by infrared and mass spectroscopy, H-1 NMR, elemental analyses and single crystal X-ray diffraction. The compound crystallizes in monoclinic system, space group P2(1)/c with a = 17.097(4) angstrom, b = 7.1668(16) angstrom, c = 18.389(3) angstrom, beta = 118.251(15)degrees, V = 1984.8(8) angstrom(3), Z = 4, D-c = 1.293 g cm(-3), F(000) = 800, mu(MoK alpha) = 0.10 mm(-1), R-1 = 0.0667, and wR(2) = 0.2084 for reflections with I > 2 sigma(I). Pyrazolo[1,5-a]pyrimidine and phenyl ring are almost coplanar, and the piperazine ring is in a chair conformation. The crystal structure is stabilized by C-H…N hydrogen interactions and a number of weak pi…pi interactions. In addition, the results of the determination of biological activity showed that the compound exhibited significant inhibitory activity against K562 and MKN45 cancer cell lines.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 65-71-4 is helpful to your research. Computed Properties of C5H6N2O2.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Application of 3680-71-5, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 3680-71-5, Name is 1,7-Dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one, SMILES is O=C1C2=C(NC=C2)NC=N1, belongs to pyrimidines compound. In a article, author is Puusepp, Sanna, introduce new discover of the category.

Atypical presentation of Arts syndrome due to a novel hemizygous loss-of-function variant in the PRPS1 gene

The PRPS1 gene, located on Xq22.3, encodes phosphoribosyl-pyrophosphate synthetase (PRPS), a key enzyme in de novo purine synthesis. Three clinical phenotypes are associated with loss-of-function PRPS1 variants and decreased PRPS activity: Arts syndrome (OMIM: 301835), Charcot-Marie-Tooth disease type 5 (CMTX5, OMIM: 311070), and nonsyndromic X-linked deafness (DFN2, OMIM: 304500). Hearing loss is present in all cases. CMTX5 patients also show peripheral neuropathy and optic atrophy. Arts syndrome includes developmental delay, intellectual disability, ataxia, and susceptibility to infections, in addition to the above three features. Gainof-function PRPS1 variants result in PRPS superactivity (OMIM: 300661) with hyperuricemia and gout. We report a 6-year-old boy who presented with marked generalized muscular hypotonia, global developmental delay, lack of speech, trunk instability, exercise intolerance, hypomimic face with open mouth, oropharyngeal dysphagia, dysarthria, and frequent upper respiratory tract infections. However, his nerve conduction velocity, audiologic, and funduscopic investigations were normal. A novel hemizygous variant, c.130A > G p.(Ile44Val), was found in the PRPS1 gene by panel sequencing. PRPS activity in erythrocytes was markedly reduced, confirming the pathogenicity of the variant. Serum uric acid and urinary purine and pyrimidine metabolite levels were normal. In conclusion, we present a novel PRPS1 loss-of-function variant in a patient with some clinical features of Arts syndrome, but lacking a major attribute, hearing loss, which is congenital/early-onset in all other reported Arts syndrome patients. In addition, it is important to acknowledge that normal levels of serum and urinary purine and pyrimidine metabolites do not exclude PRPS1-related disorders.

Application of 3680-71-5, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 3680-71-5.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Related Products of 4270-27-3, Redox catalysis has been broadly utilized in electrochemical synthesis due to its kinetic advantages over direct electrolysis. The appropriate choice of redox mediator can avoid electrode passivation and overpotential. 4270-27-3, Name is 6-Chloropyrimidine-2,4(1H,3H)-dione, SMILES is O=C1NC(C=C(N1)Cl)=O, belongs to pyrimidines compound. In a article, author is Yin, Jiechen, introduce new discover of the category.

Non-targeted metabolomic profiling of atrazine in Caenorhabditis elegans using UHPLC-QE Orbitrap/MS

The widespread use of the herbicides Atrazine (ATR) has been raised attention due to its ubiquitous occurrence in the environment. As an endocrine disruptor, ATR causes reproductive, immune, nervous system toxicity in biota. In this study, we aimed to investigate metabolic profile characteristics and potential metabolic biomarker that reflects specific damage in toxic effect after ATR exposure. Hence, a metabolomics study was performed to determine the significantly affected metabolites and the reproduction and locomotion of C. elegans were investigated. Mediation analysis was used to evaluate the mediating effect of metabolites on association between ATR exposure and toxic effect. ATR (>= 0.04 mg/L) caused the significant dose dependent reduction of brood size and locomotion behavior, however, the body length and width were significantly decreased only in 40 mg/L group. These results suggesting that brood size, head thrashes and body bends are more sensitive indictor to assessment ATR toxicity in C. elegans. Meanwhile, metabolomics analysis revealed that ATR exposure can induce metabolic profiles significant alterations in C. elegans. We found that 9 metabolites significantly increased and 18 metabolites significantly decreased, such as phosphatidylcholine, GMP, CDP-choline, neopterin etc. Those alteration of metabolites were mainly involved in the pathways: glycerophospholipid metabolism, glycolysis/gluconeogenesis, folate biosynthesis, glycine, serine and threoninemetabolism, pyrimidine and purine metabolism. Overall, these changes are signs of possible oxidative stress and ATP synthesis disruption modification. Mediation analysis showed a significant indirect effect of ATR exposure on brood size, via 7,8-dihydroneopterin 2′,3′-cyclic-p, and phosphatidylcholine might mediate association between ATR exposure and body bends, suggesting that 7,8-dihydroneopterin 2′,3′-cyclic-p and phosphatidylcholine might be potentially specificity marker for brood size and body bend respectively. This preliminary analysis investigates metabolic characteristics in C. elegans after ATR exposure, helping to understand the pathways involved in the response to ATR exposure and provide potential biomarkers for the safety evaluation of ATR.

Related Products of 4270-27-3, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 4270-27-3.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

150728-13-5, Name is 4,6-Dichloro-5-(2-methoxyphenoxy)-2,2′-bipyrimidine, molecular formula is C15H10Cl2N4O2, belongs to pyrimidines compound, is a common compound. In a patnet, author is Emami, Leila, once mentioned the new application about 150728-13-5, Application In Synthesis of 4,6-Dichloro-5-(2-methoxyphenoxy)-2,2′-bipyrimidine.

Design, synthesis, molecular simulation, and biological activities of novel quinazolinone-pyrimidine hybrid derivatives as dipeptidyl peptidase-4 inhibitors and anticancer agents

Two novel series of quinazolinone-pyrimidine (series a: 9a-9i) and benzyl-pyrimidine hybrids (series b: 12a-12c) were designed, synthesized and characterized by spectroscopic methods. The dipeptidyl peptidase-4 inhibition potencies of these compounds were assessed through a MAK 203 kit. Compound 9e was found to be the most potent agent with an IC50 value of 34.3 +/- 3.3 mu M. A kinetic study revealed that it acted as a competitive inhibitor. Molecular modeling of these compounds was in agreement with the in vitro results. Due to the crucial role of dipeptidyl peptidase-4 in cancer therapy, the cytotoxic activities of the compounds were also evaluated against three cancerous cell lines (HT-29, SW1116 and A549). Almost all the compounds displayed better antiproliferative activity on colon cancer cell lines (HT-29 and SW1116) compared to a lung cancer cell line (A549). Compounds 9e and 12c exhibited significant activity toward the HT-29 cell line with an IC50 of 10.67 +/- 0.3 mu M and 27.9 +/- 6.5 mu M in comparison to sitagliptin and cisplatin as a positive control, respectively. Among the different cells, the compounds showed the best inhibitory effects on HT-29, which was compatible with the greater expression of the dipeptidyl peptidase-4 marker detected by flow cytometry in this cell line. Further studies on the hit compounds (9e and 12c) through cell cycle and apoptosis assays also showed that these compounds could induce cell death by apoptosis or arrest cells in the G2/M phase. Accordingly, the results imply that 9e is a potent inhibitor of dipeptidyl peptidase-4 with efficient anti-cancer activity and could play a role as a cytotoxic agent in colorectal cancer.

If you¡¯re interested in learning more about 150728-13-5. The above is the message from the blog manager. Application In Synthesis of 4,6-Dichloro-5-(2-methoxyphenoxy)-2,2′-bipyrimidine.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

4318-56-3, Name is 6-Chloro-3-methylpyrimidine-2,4(1H,3H)-dione, molecular formula is C5H5ClN2O2, Application In Synthesis of 6-Chloro-3-methylpyrimidine-2,4(1H,3H)-dione, belongs to pyrimidines compound, is a common compound. In a patnet, author is Lee, Won Dong, once mentioned the new application about 4318-56-3.

Tumor Reliance on Cytosolic versus Mitochondrial One-Carbon Flux Depends on Folate Availability

Folate metabolism supplies one-carbon (1C) units for biosynthesis and methylation and has long been a target for cancer chemotherapy. Mitochondrial serine catabolism is considered the sole contributor of folate-mediated 1C units in proliferating cancer cells. Here, we show that under physiological folate levels in the cell environment, cytosolic serine-hydroxymethyltransferase (SHMT1) is the predominant source of 1C units in a variety of cancers, while mitochondrial 1C flux is overly repressed. Tumor-specific reliance on cytosolic 1C flux is associated with poor capacity to retain intracellular folates, which is determined by the expression of SLC19A1, which encodes the reduced folate carrier (RFC). We show that silencing SHMT1 in cells with low RFC expression impairs pyrimidine biosynthesis and tumor growth in vivo. Overall, our findings reveal major diversity in cancer cell utilization of the cytosolic versus mitochondrial folate cycle across tumors and SLC19A1 expression as a marker for increased reliance on SHMT1.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 4318-56-3 help many people in the next few years. Application In Synthesis of 6-Chloro-3-methylpyrimidine-2,4(1H,3H)-dione.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

Let¡¯s face it, organic chemistry can seem difficult to learn, Recommanded Product: 2-bromo-5-fluoropyrimidine, Especially from a beginner¡¯s point of view. Like 947533-45-1, Name is 2-bromo-5-fluoropyrimidine, molecular formula is C8H12N4, belongs to pyrimidines compound. In a document, author is Shafikov, Marsel Z., introducing its new discovery.

Extended ligand conjugation and dinuclearity as a route to efficient platinum-based near-infrared (NIR) triplet emitters and solution-processed NIR-OLEDs

Near infrared (NIR) emission from molecular materials is typically targeted by using more extended conjugated systems compared to visible-emitting materials. But efficiencies usually fall off due to the combined effects of increasing non-radiative and lower oscillator strengths as the energy of emissive excited states decreases. Efficient NIR-emitting organic light emitting diodes (OLEDs) are rare compared to the huge progress that has been made for visible-light devices. For organometallic emitters that contain a heavy metal ion to promote phosphorescence through the effect of enhanced spin-orbit coupling (SOC), the problem is typically exacerbated by decreased metal character in the S-n and T-1 excited states as the conjugation in a bound ligand increases. Here we show how the use of a dinuclear metal complex with an extended conjugated ligand allows such effects to be mitigated compared to analogous structures with just one metal centre. The complex Pt-2(bis-dthpym)(dpm)(2) (complex 5) is readily prepared by a double N<^>C cyclometallation of 4,6-bis(dithienyl)-pyrimidine (H(2)bis-dthpym), with the coordination sphere of each Pt centre being completed by O<^>O-coordinating dipivaloylmethane (dpm). This new complex displays intense NIR emission in solution, lambda(max) = 725 nm, with essentially no contamination by visible light <700 nm. The photoluminescence quantum yield of 0.17 in toluene at 300 K is vastly superior to that of the analogous mononuclear complex, where reduced SOC leads primarily to ligand-based fluorescence and only very weak phosphorescence. Computational results indicate that a key reason for the superior performance of the dinuclear system is a doubling of the number of higher-lying excited singlet states with which the T-1 state may couple, to promote the formally forbidden phosphorescence process. Complex 5 has been evaluated as an NIR emitter in solution-processed OLEDs. An external quantum efficiency (EQE) of 3.6% is attained using 5 doped into TBP:PBD at 5% w/w, with a turn-on voltage of 5.6 V (at 0.01 mW cm(-2)). The maximum radiosity of 2.7 mW cm(-2) for this device is particularly high compared to most reported NIR-emitting phosphorescent OLEDs. If you are hungry for even more, make sure to check my other article about 947533-45-1, Recommanded Product: 2-bromo-5-fluoropyrimidine.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia

2927-71-1, Name is 2,4-Dichloro-5-fluoropyrimidine, molecular formula is C4HCl2FN2, belongs to pyrimidines compound, is a common compound. In a patnet, author is K. Bains, Amreen, once mentioned the new application about 2927-71-1, HPLC of Formula: C4HCl2FN2.

Bioinspired Radical-Mediated Transition-Metal-Free Synthesis of N-Heterocycles under Visible Light

A redox-active iminoquinone motif connected with pi-delocalized pyrene core has been reported that can perform efficient two-electron oxidation of a class of substrates. The design of the molecule was inspired by the organic redox cofactor topaquinone (TPQ), which executes amine oxidation in the enzyme, copper amine oxidase. Easy oxidation of both primary and secondary alcohols happened in the presence of catalytic KOtBu, which could reduce the ligand backbone to its iminosemiquinonate form under photoinduced conditions. Moreover, this easy oxidation of alcohols under aerobic condition could be elegantly extended to multi-component, one-pot coupling for the synthesis of quinoline and pyrimidine. This organocatalytic approach is very mild (70 degrees C, 8 h) compared to a multitude of transition-metal catalysts that have been used to prepare these heterocycles. A detailed mechanistic study proves the intermediacy of the iminosemiquinonate-type radical and a critical hydrogen atom transfer step to be involved in the dehydrogenation reaction.

If you¡¯re interested in learning more about 2927-71-1. The above is the message from the blog manager. HPLC of Formula: C4HCl2FN2.

Reference:
Pyrimidine | C4H4N2 – PubChem,
,Pyrimidine – Wikipedia