Month: October 2022

Onys’ko, P. P.; Gololobov, Yu. G.; Remennikov, G.; Cherkasov, V. M. published an article in Zhurnal Obshchei Khimii. The title of the article was 《Anion σ-complexes of phosphorus compounds. VII. σ-Complexes of dialkylphosphites with 5-nitropyrimidines》.Formula: C5H5N3O3 The author mentioned the following in the article:

Reaction of I (R = H, MeO, Ph; R1 = H) with (R2O)2P(O)H (R2 = Me, Et) in presence of Et3N gave II (R, R1, R2, as above). Similar reaction of I (R = H, MeO, R1 = MeO) with (R2O)2P(O)H (R2 = Me, Et) gave III via the corresponding intermediate II. In the experiment, the researchers used many compounds, for example, 2-Methoxy-5-nitropyrimidine(cas: 14001-69-5Formula: C5H5N3O3)

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.Formula: C5H5N3O3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The author of 《Zwitterionic σ-complexes: their role as intermediates in phosphorylation of aromatics by phosphorus compounds》 were Gololobov, Yu. G.; Onys’ko, P. P.. And the article was published in ACS Symposium Series in 1981. COA of Formula: C5H5N3O3 The author mentioned the following in the article:

Reaction of P(III) compounds with 1,3,5-(O2N)3C6H3 in Me2SO gave σ-complexes I [PR3 = P(OEt)3, PPh(OEt)2, P(OEt)Ph2, P(O)(OEt)2], which were stabilized without a dissociated cation in contrast to ordinary Meisenheimer σ-complexes. 5-Nitropyrimidines do not form stable σ-complexes with (RO)3P or (RO)2P(O)H without bases. II [R = alkyl; R1 = H, MeO, Ph, R2 = H; R1 = H, MeO, R2 = MeO] were prepared only in the presence of Et3N. In addition to this study using 2-Methoxy-5-nitropyrimidine, there are many other studies that have used 2-Methoxy-5-nitropyrimidine(cas: 14001-69-5COA of Formula: C5H5N3O3) was used in this study.

2-Methoxy-5-nitropyrimidine(cas: 14001-69-5) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.COA of Formula: C5H5N3O3

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 1984,Seela, Frank; Driller, Hansjuergen published 《7-(β-D-Arabinofuranosyl)-2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine – synthesis, selective displacement of halogen, and effect of glyconic protecting groups on the reactivity of the aglycon》.Liebigs Annalen der Chemie published the findings.Application of 90213-66-4 The information in the text is summarized as follows:

Phase-transfer glycosylation of 2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine with 2,3,5-tri-O-benzyl-α-D-arabinofuranosyl bromide, followed by column chromatog. gave 67% nucleoside I (R = PhCH2) (II), which on debenzylation with BCl3 gave the title compound I (R = H) (III). Nucleophilic displacement on III resulted in selective substitution of Cl in position 4. Under more vigorous conditions the C-4 as well as the C-2 substituents were replaced. In contrast nucleophilic substitution of II was hindered. 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: 90213-66-4Application of 90213-66-4) was used in this study.

2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4) belongs to pyrimidine. Pyrimidine nucleotide derivatives have a wide range of biological applications. For example, pyrimidine derivatives are useful in DNA repair studies involving cancer and epigenetics. Application of 90213-66-4

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 1985,Seela, Frank; Driller, Hansjuergen; Liman, Ulrich published 《7-Deaza isosters of 2′-deoxyxanthosine and 2′-deoxyspongosine – synthesis via glycosylation of 2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine》.Liebigs Annalen der Chemie published the findings.Recommanded Product: 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine The information in the text is summarized as follows:

Glycosylation of 2,4-dichloro-7H-pyrrolo[2,3-d]pyrimidine with 2-deoxy-3,5-di-O-p-toluoyl-α-D-erythro-pentofuranosyl chloride in DMF in the presence of NaH gave the nucleoside derivative I (R = R1 = Cl; R2 = p-toluoyl) (II) and its α-anomer. II on treatment with NaOMe in MeOH gave I (R = R1 = MeO; R2 = H), which on demethylation with HBr-AcOH in THF gave 7-deaza-2′-deoxyxanthosine (III). II was also converted into 7-deaza-2′-deoxyspongosine (I; R = MeO, R1 = NH2, R2 = H). In the part of experimental materials, we found many familiar compounds, such as 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4Recommanded Product: 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine)

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. Recommanded Product: 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

In 1987,Seela, Frank; Steker, Herbert; Driller, Hans Juergen; Bindig, Uwe published 《2-Amino-2′-deoxytubercidin and related pyrrolo[2,3-d]pyrimidinyl-2′-deoxyribofuranosides》.Liebigs Annalen der Chemie published the findings.Category: pyrimidines The information in the text is summarized as follows:

Phase-transfer glycosylation of 2-amino-4-chloro-7H-pyrrolo[2,3-d]pyrimidine with 1-chloro-3,5-di-O-(p-toluoyl)-α-D-erythro-pentofuranose (I) yielded the crystalline nucleoside II in a regio- and diastereoselective reaction. Nucleophilic displacement of the 4-chloro substituent of II or the nonprotected analog opened a route to 2-amino-2′-deoxytubercidin (III) or the thionucleoside IV. The anomers of I were isolated from the glycosylation reaction carried out in the absence of the nucleobase. In the part of experimental materials, we found many familiar compounds, such as 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4Category: pyrimidines)

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. Category: pyrimidines

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 2018,Wang, Hui-Yan; Shen, Ying; Zhang, Hao; Hei, Yuan-Yuan; Zhao, Hong-Yi; Xin, Minhang; Lu, She-Min; Zhang, San-Qi published 《Discovery of 2-(aminopyrimidin-5-yl)-4-(morpholin-4-yl)-6- substituted triazine as PI3K and BRAF dual inhibitor》.Future Medicinal Chemistry published the findings.Safety of 2,4,6-Trichloropyrimidine The information in the text is summarized as follows:

The discovery and development of novel agents simultaneously targeting PI3K/AKT/mammalian target of rapamycin and Ras/RAF/MEK, two signaling pathways, are urgent to improve the curative effect of kinase inhibitors and overcome acquired resistance. In the present study, 2-(2-aminopyrimidin-5-yl)-4-(morpholin-4-yl)-6-(N-cyclopropyl-N- (1-benzoylpiperidin-4-yl))triazines/pyrimidines were designed as PI3K and BRAF dual inhibitors. The synthesized 20 compounds exhibited potent antiproliferative effects in vitro against HCT116, A375, MCF-7, Colo205, A549 and LOVO cancer cell lines. The tested compounds A6, A7, A9 and A11 remarkably displayed inhibitory activities toward both PI3Kα and BRAFV600E. These results indicated that our design compounds can serve as potent PI3Kα and BRAFV600E dual inhibitors and effective antiproliferative agents, which can be further optimized to discover more potent PI3Kα and BRAFV600E dual inhibitors.2,4,6-Trichloropyrimidine(cas: 3764-01-0Safety of 2,4,6-Trichloropyrimidine) was used in this study.

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.Safety of 2,4,6-Trichloropyrimidine

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 2019,Chemie Ingenieur Technik included an article by Xie, Xiangzhong; Schenkendorf, Rene; Krewer, Ulrike. COA of Formula: C4H2Cl2N2. The article was titled 《The Effect of Correlated Kinetic Parameters on (Bio)Chemical Reaction Networks》. The information in the text is summarized as follows:

Exploiting the information provided by (bio)chem. reaction networks has proved beneficial for process anal. and design. To this end, parameter uncertainties have to be included in the anal. and design of (bio)chem. processes to ensure reliable model-based results. The goal is to investigate the impact of parameter correlations on (bio)chem. reaction networks and parameter sensitivities. An efficient sensitivity anal. concept is demonstrated with two simulation studies, and the results indicate a significant impact of the parameter correlations on the derived parameter sensitivities and the model-based results in general. The experimental part of the paper was very detailed, including the reaction process of 2,4-Dichloropyrimidine(cas: 3934-20-1COA of Formula: C4H2Cl2N2)

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.COA of Formula: C4H2Cl2N2

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

The author of 《Designing a chemical inhibitor for the AAA protein spastin using active site mutations》 were Cupido, Tommaso; Pisa, Rudolf; Kelley, Megan E.; Kapoor, Tarun M.. And the article was published in Nature Chemical Biology in 2019. Category: pyrimidines The author mentioned the following in the article:

Spastin is a microtubule-severing AAA (ATPases associated with diverse cellular activities) protein needed for cell division and intracellular vesicle transport. Currently, we lack chem. inhibitors to probe spastin function in such dynamic cellular processes. To design a chem. inhibitor of spastin, we tested selected heterocyclic scaffolds against wild-type protein and constructs with engineered mutations in the nucleotide-binding site that do not substantially disrupt ATPase activity. These data, along with computational docking, guided improvements in compound potency and selectivity and led to spastazoline, a pyrazolyl-pyrrolopyrimidine-based cell-permeable probe for spastin. These studies also identified spastazoline-resistance-conferring point mutations in spastin. Spastazoline, along with the matched inhibitor-sensitive and inhibitor-resistant cell lines we generated, were used in parallel experiments to dissect spastin-specific phenotypes in dividing cells. Together, our findings suggest how chem. probes for AAA proteins, along with inhibitor resistance-conferring mutations, can be designed and used to dissect dynamic cellular processes. In the experiment, the researchers used 2,4-Dichloro-7H-pyrrolo[2,3-d]pyrimidine(cas: 90213-66-4Category: pyrimidines)

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. Category: pyrimidines

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

Yuan, Kai; Ji, Minghui; Xie, Shengnan; Qiu, Zhixia; Chen, Weijiao; Min, Wenjian; Xia, Fei; Zheng, Mingming; Wang, Xiao; Li, Jiaxing; Hou, Yi; Kuang, Wenbin; Wang, Liping; Gu, Wanjian; Li, Zhiyu; Yang, Peng published an article in 2022. The article was titled 《Discovery of Dual CDK6/PIM1 Inhibitors with a Novel Structure, High Potency, and Favorable Druggability for the Treatment of Acute Myeloid Leukemia》, and you may find the article in Journal of Medicinal Chemistry.Category: pyrimidines The information in the text is summarized as follows:

Nowadays, the simultaneous inhibition of two or more pathways plays an increasingly important role in cancer treatment due to the complex and diverse pathogenesis of cancer, and the combination of the cyclin-dependent kinase 6 (CDK6) inhibitor and PIM1 inhibitor was found to generate synergistic effects in acute myeloid leukemia (AML) treatment. Therefore, we discovered a novel lead 1 targeting CDK6/PIM1 via pharmacophore-based and structure-based virtual screening, synthesized five different series of new derivates, and obtained a potent and balanced dual CDK6/PIM1 inhibitor 51 (I), which showed high kinase selectivity. Meanwhile, 51 displayed an excellent safety profile and great pharmacokinetic properties. Furthermore, 51 displayed stronger potency in reducing the burden of AML than palbociclib and SMI-4a in vivo. In summary, we offered a new direction for AML treatment and provided a great lead compound for AML preclin. studies. The experimental process involved the reaction of 2,4-Dichloropyrimidine(cas: 3934-20-1Category: pyrimidines)

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.Category: pyrimidines

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia

In 2022,Dannheim, Friederike M.; Walsh, Stephen J.; Orozco, Carolina T.; Hansen, Anders Hoejgaard; Bargh, Jonathan D.; Jackson, Sophie E.; Bond, Nicholas J.; Parker, Jeremy S.; Carroll, Jason S.; Spring, David R. published an article in Chemical Science. The title of the article was 《All-in-one disulfide bridging enables the generation of antibody conjugates with modular cargo loading》.Product Details of 3764-01-0 The author mentioned the following in the article:

Antibody-drug conjugates (ADCs) are valuable therapeutic entities which leverage the specificity of antibodies to selectively deliver cytotoxins to antigen-expressing targets such as cancer cells. However, current methods for their construction still suffer from a number of shortcomings. For instance, using a single modification technol. to modulate the drug-to-antibody ratio (DAR) in integer increments while maintaining homogeneity and stability remains exceptionally challenging. Herein, we report a novel method for the generation of antibody conjugates with modular cargo loading from native antibodies. Our approach relies on a new class of disulfide rebridging linkers, which can react with eight cysteine residues, thereby effecting all-in-one bridging of all four interchain disulfides in an IgG1 antibody with a single linker mol. Modification of the antibody with the linker in a 1 : 1 ratio enabled the modulation of cargo loading in a quick and selective manner through derivatization of the linker with varying numbers of payload attachment handles to allow for attachment of either 1, 2, 3 or 4 payloads (fluorescent dyes or cytotoxins). Assessment of the biol. activity of these conjugates demonstrated their exceptional stability in human plasma and utility for cell-selective cytotoxin delivery or imaging/diagnostic applications. The results came from multiple reactions, including the reaction of 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. Organic chloride content in crude oil can be detected through specialized laboratory analysis. Care and attention are essential while sampling and testing.Product Details of 3764-01-0

Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia