Tag: 100-200

Arnold, Zdzislaw; Draminski, Marcin; Fiszer, Bernard published an article in Polish Journal of Chemistry. The title of the article was 《Synthesis of quaternary pyrimidine bases, potential cholinesterase reactivators》.Related Products of 1073-65-0 The author mentioned the following in the article:

The title compounds I (R = Me, Et, Bu, X = I; R = Pr, allyl, X = Br) were obtained in 9-94% yields by quaternization of the oxime by RX in Me2CO 5-60 h at 37°. I showed no activity as cholinesterase reactivators. The results came from multiple reactions, including the reaction of Pyrimidine-4-carbaldehyde oxime(cas: 1073-65-0Related Products of 1073-65-0)

Pyrimidine-4-carbaldehyde oxime(cas: 1073-65-0) is a member of pyrimidine. Pyrimidine derivatives are an important class of N-heterocycles. They are well-known for their wide spectrum of promising biological activities such as antitumors, bactericidals, and fungicidal.Related Products of 1073-65-0

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Category: pyrimidinesOn March 12, 1982, Barczynski, P.; Van der Plas, H. C. published an article in Journal of Organic Chemistry. The article was 《Ring transformations in reactions of heterocyclic compounds with nucleophiles. Part 24. Pyrimidines. Part 86. Conversion of 5-nitropyrimidine into 2-substituted 5-nitropyrimidine and 2-amino-5-nitropyridines by amidines》. The article mentions the following:

The reaction of 5-nitropyrimidine (I) with benzamidine, pivalamidine, acetamidine, propionamidine, α-phenylacetamidine, O-methylisourea hydrochlorides, and cyanamide in ethanolic solution in the presence of Et3N was investigated. I and alkyl(aryl)amidines, having no active methylene groups attached to the amidine moiety (pivalamidine, benzamidine), gave the corresponding 2-substituted 5-nitropyrimidines in good yields. With acetamidine and propionamidine, 2-amino-5-nitropyridines were also formed; with α-phenylacetamidine a 2-amino-5-nitropyridine derivative was obtained exclusively. The reaction of I with both O-methylisourea and cyanamide leads to 2-amino-5-nitropyrimidine. These reactions provide new examples of degenerate ring transformations of the pyrimidine ring system and of the ring transformation of pyrimidines into pyridines. After reading the article, we found that the author used 2-Methoxy-5-nitropyrimidine(cas: 14001-69-5Category: pyrimidines)

2-Methoxy-5-nitropyrimidine(cas: 14001-69-5) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Category: pyrimidines

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

SDS of cas: 90213-66-4In 2021 ,《Structure-Based Design and Discovery of Pyridyl-Bearing Fused Bicyclic HIV-1 Inhibitors: Synthesis, Biological Characterization, and Molecular Modeling Studies》 was published in Journal of Medicinal Chemistry. The article was written by Huang, Boshi; Ginex, Tiziana; Luque, F. Javier; Jiang, Xiangyi; Gao, Ping; Zhang, Jian; Kang, Dongwei; Daelemans, Dirk; De Clercq, Erik; Pannecouque, Christophe; Zhan, Peng; Liu, Xinyong. The article contains the following contents:

Tetrahydroquinazolines I [R1 = Me, CN, CHO, CH2=CH2CN; R2 = CN, CH2CN, OCF3, SO2CH3; X = Y = CH, N]/pyrrolopyrimidines II [R3 = CN, CH2=CH2CN, CH2=CH2C(O)NH2; X1 = CH, N; Y1 = CH]/pyrrolotriazines III [R4 = CH2OH, CH2O(CH2)2Si(CH3)3, 2-morpholino-2-oxo-ethyl; X2 = Y2 = CH, N] analogs designed to target the dual-tolerant regions of the non-nucleoside reverse transcriptase inhibitor (NNRTI)-binding pocket were synthesized and evaluated for their anti-HIV activities. Several compounds, such as I [R1 = CN, CH2=CH2CN; R2 = CN; X = Y = CH], compound II [R3 = CN; X1 = N; Y1 = CH] and compounds III [R4 = CH2OH, 2-morpholino-2-oxo-ethyl; X2 = CH, N; Y2 = CH] were found to be potent inhibitors against the wild-type (WT) HIV-1 strain or multiple NNRTI-resistant strains at low nanomolar levels. Detailed structure-activity relationships were obtained by utilizing the variation of moieties within the corresponding pharmacophores. In vitro metabolic stability profiles and some drug-like properties of selected compounds were assessed, furnishing the preliminary structure-metabolic stability relationships. Furthermore, mol. modeling studies elucidated the binding modes of compounds I [R1 = CN, CH2=CH2CN; R2 = CN; X = CH, N; Y = CH], compound II [R3 = CN; X1 = N; Y1 = CH] and compound III [R4 = CH2OH; X2 = CH, N; Y2 = CH] in the binding pocket of WT, E138K, K103N, or Y181C HIV-1 RTs. These promising compounds could be used as lead compounds and warrant further structural optimization to yield more active HIV-1 inhibitors.2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4SDS of cas: 90213-66-4) was used in this study.

2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4) belongs to pyrimidine. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives, including the nucleotides cytosine, thymine and uracil, thiamine (vitamin B1) and alloxan. SDS of cas: 90213-66-4

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 2022,Pawara, Rahul; Ahmad, Iqrar; Nayak, Deepika; Belamkar, Sateesh; Surana, Sanjay; Kundu, Chanakya Nath; Patil, Chandragauda; Patel, Harun published an article in Journal of Molecular Structure. The title of the article was 《Design and synthesis of the novel, selective WZ4002 analogue as EGFR-L858R/T790M tyrosine kinase inhibitors for targeted drug therapy in non-small-cell lung cancer (NSCLC)》.Formula: C4H2Cl2N2 The author mentioned the following in the article:

To conquer the drug-resistance of first-generation EGFR (epidermal growth factor receptor) kinase inhibitors and second-generation inhibitors’ non-selective toxicities in Non-Small Cell Lung Cancer (NSCLC) patients, a series of WZ4002 derivatives I [R1 = 4-fluorophenyl, 3,4-dichlorophenyl, 4-bromophenyl, etc.; R2 = 3-CH2=CHC(O)NHC6H4, 4-MeC(O)-N(CH2)2N-C6H4, 3-ClCH2C(O)NHC6H4, etc.] were discovered as novel double mutant EGFR-L858R/T790M TK inhibitors. This objective was attained by employing structure-based drug design and traditional optimization strategies based on the WZ4002 scaffold. Among the synthesized compounds I, representative compounds I [R1 = 4-chloro-3-fluorophenyl, 4-bromophenyl; R2 = 3-CH2=CHC(O)-N(CH2)2N-C6H4] displayed significant anti-proliferative activity on the Gefitinib-resistant cell line NCI-H1975, with an IC50 value of 0.179μM and 0.173μM, resp. Also, these compounds exhibited moderate anti-proliferative activity against the A549 cell, with an IC50 of 0.550μM and 0.528μM resp., suggesting their improved selectivity over the mutant EGFR-L858R/T790M. Excitingly, both these compounds showed significant inhibition of the double mutant EGFR-L858R/T790M TK with an IC50 value of 0.0063μM and 0.0060μM, resp. The IC50 values of both the promising compounds against the HepG2 cell line were more than 1μM, indicating safety for normal cells. Covalent docking and MD simulation further confirm their irreversible binding mode with the target protein. These results demonstrate that compounds I [R1 = 4-chloro-3-fluorophenyl, 4-bromophenyl; R2 = 3-CH2=CHC(O)-N(CH2)2N-C6H4] would be promising lead compound-targeting double mutant EGFR-L858R/T790M TK. The results came from multiple reactions, including the reaction of 2,4-Dichloropyrimidine(cas: 3934-20-1Formula: C4H2Cl2N2)

2,4-Dichloropyrimidine(cas: 3934-20-1) is a member of organic chlorides. Organic chloride content in crude oil can be detected through specialized laboratory analysis. Care and attention are essential while sampling and testing.Formula: C4H2Cl2N2

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Al-Wahaibi, Lamya H.; Bysani, Sai Ramya Sree; Tawfik, Samar S.; Abdelbaky, Mohammed S. M.; Garcia-Granda, Santiago; El-Emam, Ali A.; Percino, M. Judith; Thamotharan, Subbiah published their research in Crystal Growth & Design in 2021. The article was titled 《Invariant and Variable Supramolecular Self-Assembly in 6-Substituted Uracil Derivatives: Insights from X-ray Structures and Quantum Chemical Study》.Product Details of 3764-01-0 The article contains the following contents:

In this study, three new 6-(arylthio)uracil derivatives, namely, 6-(phenylthio)pyrimidine-2,4(1H,3H)-dione (1), C10H8N2O2S; 6-(p-tolylthio)pyrimidine-2,4(1H,3H)-dione (2), C11H10N2O2S; and 6-(3,5-dimethylphenylthio)pyrimidine-2,4(1H,3H)-dione (3), C12H12N2O2S, have been synthesized. Single-crystal structures of these compounds reveal an invariant mol. tape contains alternate R22(8) synthons formed by N-H···O hydrogen bonds in 1 and 3. This alternate hydrogen-bonded pattern disappeared in 2; instead, a new synthon is generated. The lattice energy calculation suggests that the methyl-substituted derivatives (2 and 3) have high stabilization energy than compound 1. The electrostatic potential map reveals the difference in the accepting tendency of the carbonyl oxygen. The Hirshfeld surface and 2D-fingerprint plots analyses demonstrate that the major intermol. interactions come from H···O contacts in 1, and these contacts were reduced due to the presence of Me substitutions in 2 and 3. This reduction is compensated by the increase of the same amount of H···H contacts in these structures. Further, the PIXEL energy and DFT calculations at the M06-2X-D3/ cc-pVTZ level of theory were used to characterize the dimeric topol. formed in structures of 1-3. The intermol. interaction energies of dimers calculated by the PIXEL method were compared with the B97D3/ def2-TZVP level of approximation Although these mols.’ crystal packing is somewhat different, the energy frameworks show similarities on the resp. crystal structure’s shortest axis. Furthermore, the nature and strength of various noncovalent interactions such as N-H···O, C-H···O/ S/π, π···π, and a chalcogen bond of type C-S···O=C were evaluated using the Bader’s quantum theory of atoms-in-mols. framework. In the part of experimental materials, we found many familiar compounds, such as 2,4,6-Trichloropyrimidine(cas: 3764-01-0Product Details of 3764-01-0)

2,4,6-Trichloropyrimidine(cas: 3764-01-0) is a member of organic chlorides. Almost all organochlorine compounds are synthesized. It is widely used as intermediates, solvents and pesticides of chemical synthetic products.Product Details of 3764-01-0

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

《An efficient and scalable approach for the synthesis of piperazine based glitazone and its derivatives》 was published in Synthetic Communications in 2020. These research results belong to Sharma, Vijay Kumar; Barde, Anup; Rattan, Sunita. SDS of cas: 3934-20-1 The article mentions the following:

A versatile and efficient synthetic approach has been developed for the synthesis of piperazine based glitazones I (R = Me, propan-2-yl, cyclopropylmethyl, etc.) analogus to Lobeglitazone. Desired compounds I were synthesized with good yields by alkylation of piperazine substrate I (R = H) with various carbonyl compds R1C(O)R2 (R1 = H, Me, Et, cyclopropyl; R2 = H, Me; R1R2 = -(CH2)3-). This substrate has the potential for the construction of novel heterocyclic compounds with medicinal importance. In the experimental materials used by the author, we found 2,4-Dichloropyrimidine(cas: 3934-20-1SDS of cas: 3934-20-1)

2,4-Dichloropyrimidine(cas: 3934-20-1) is a member of organic chlorides. Almost all organochlorine compounds are synthesized. It is widely used as intermediates, solvents and pesticides of chemical synthetic products.SDS of cas: 3934-20-1

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 2016,Sabat, Nazarii; Postova Slavetinska, Lenka; Klepetarova, Blanka; Hocek, Michal published 《C-H Phosphonation of Pyrrolopyrimidines: Synthesis of Substituted 7- and 9-Deazapurine-8-phosphonate Derivatives》.Journal of Organic Chemistry published the findings.Name: 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine The information in the text is summarized as follows:

The Mn(OAc)3-promoted C-H phosphonation of 7-deazapurines (pyrrolo[2,3-d]pyrimidines) and 9-deazapurines (pyrrolo[3,2-d]pyrimidines) with diethylphosphite was developed. The reactions occur regioselectively at position 8 both in 7 and 9-deazapurines, leading to new deazapurine-8-phosphonate derivatives, which can be further modified and transformed to 6-(het)aryl-deazapurine derivatives or deprotected to free phosphonic acids. In addition to this study using 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine, there are many other studies that have used 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4Name: 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine) was used in this study.

2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4) belongs to pyrimidine. Pyrimidine derivatives also play an important role in drug development, either in concert with other compounds or on their own. Name: 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidineThey have been used in a wide variety of pharmaceuticals including general anesthetics, anti-epilepsy medication, anti-malaria medication, drugs for treating high blood pressure, and HIV medication.

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The author of 《Protonation of 2,4-diaminopyrimidines. I. Dissociation constants and substituent effects》 were Roth, Barbara; Strelitz, Justina Z.. And the article was published in Journal of Organic Chemistry in 1969. Computed Properties of C7H10N4O2 The author mentioned the following in the article:

The basic dissociation constant of a series of approx. 70 2,4-diaminopyrimidines and condensed pyrimidine derivatives were obtained. The major effect of 5 substitution is inductive, but there is a greater resonance component than can be accounted for by correlation with Hammett σm constant The effect of 6 substitution, on the other hand, is almost completely inductive. Similar relations were found with 4-amino-6-substituted pyrimidines. In some cases H bonding renders such correlations imprecise. Dissociation constant of 4-substituted pyrimidines can be correlated with σp constant, but 2-substituted derivatives appear to have a considerately greater inductive component. The shifts in uv maximum of 2,4-diamino-6-substituted, but not 5-substituted, pyrimidines had a dependence on the + R or -R character of the substituents. Ion pair formation between certain diaminopyrimidines and divalent ions in aqueous solution was postulated on the basis of uv studies. After reading the article, we found that the author used Ethyl 2,4-diaminopyrimidine-5-carboxylate(cas: 15400-54-1Computed Properties of C7H10N4O2)

Ethyl 2,4-diaminopyrimidine-5-carboxylate(cas: 15400-54-1) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).Computed Properties of C7H10N4O2

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Quality Control of Ethyl 2-cyano-2-(pyrimidin-2-yl)acetateOn March 31, 1994, Oleinik, Irina V.; Zagulyaeva, Olga A. published an article in Mendeleev Communications. The article was 《Reaction of dihydroazinylidene cyanoacetic esters with nitric acid: a new method for the synthesis of dihydroazinylidene nitroacetonitriles》. The article mentions the following:

An approach to the synthesis of previously unknown dihydroazinylidene nitroacetonitriles (derivatives of pyridine, pyrimidine, pyrazine and pyridazine) has been developed involving nitration of the corresponding dihydroazinylidene cyanoacetic esters at the side chain α-C-atom and dealkoxycarbonylation of the resulting products. In the experimental materials used by the author, we found Ethyl 2-cyano-2-(pyrimidin-2-yl)acetate(cas: 65364-63-8Quality Control of Ethyl 2-cyano-2-(pyrimidin-2-yl)acetate)

Ethyl 2-cyano-2-(pyrimidin-2-yl)acetate(cas: 65364-63-8) is a member of pyrimidine. Pyrimidine derivatives are an important class of N-heterocycles. They are well-known for their wide spectrum of promising biological activities such as antitumors, bactericidals, and fungicidal.Quality Control of Ethyl 2-cyano-2-(pyrimidin-2-yl)acetate

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

《Tozasertib Analogues as Inhibitors of Necroptotic Cell Death》 was written by Hofmans, Sam; Devisscher, Lars; Martens, Sofie; Van Rompaey, Dries; Goossens, Kenneth; Divert, Tatyana; Nerinckx, Wim; Takahashi, Nozomi; De Winter, Hans; Van Der Veken, Pieter; Goossens, Vera; Vandenabeele, Peter; Augustyns, Koen. Recommanded Product: 3764-01-0This research focused ontozasertib analog preparation necroptosis inhibitor antiinflammatory SIRS. The article conveys some information:

Receptor interacting protein kinase 1 (RIPK1) plays a crucial role in tumor necrosis factor (TNF)-induced necroptosis, suggesting that this pathway might be druggable. Most inhibitors of RIPK1 are classified as either type II or type III kinase inhibitors. This opened up some interesting perspectives for the discovery of novel inhibitors that target the active site of RIPK1. Tozasertib, a type I pan-aurora kinase (AurK) inhibitor, was found to show a very high affinity for RIPK1. Because tozasertib presents the typical structural elements of a type I kinase inhibitor, the development of structural analogs of tozasertib is a good starting point for identifying novel type I RIPK1 inhibitors. In this paper, we identified interesting inhibitors of mTNF-induced necroptosis with no significant effect on AurK A and B, resulting in no nuclear abnormalities as is the case for tozasertib. Compounds 71 and 72 outperformed tozasertib in an in vivo TNF-induced systemic inflammatory response syndrome (SIRS) mouse model. The experimental part of the paper was very detailed, including the reaction process of 2,4,6-Trichloropyrimidine(cas: 3764-01-0Recommanded Product: 3764-01-0)

2,4,6-Trichloropyrimidine(cas: 3764-01-0) is a member of organic chlorides. Organic chlorides are compounds containing a carbon-chlorine bond, which are widely used in the oil field as a wax dissolver. They are generally not present in crude oils and are typically the result of additives, cleaning solutions or chemicals used for oil recovery.Recommanded Product: 3764-01-0

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia