Tag: M.W:100-200

Hubbard, Troy D.; Liu, Qing; Murray, Iain A.; Dong, Fangcong; Miller, Charles; Smith, Philip B.; Gowda, Krishne; Lin, Jyh Ming; Amin, Shantu; Patterson, Andrew D.; Perdew, Gary H. published an article about the compound: 2,6-Dichloropurine( cas:5451-40-1,SMILESS:C2=NC1=C(C(=NC(=N1)Cl)Cl)[NH]2 ).Recommanded Product: 2,6-Dichloropurine. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:5451-40-1) through the article.

The aryl hydrocarbon receptor (AHR) is a major regulator of immune function within the gastrointestinal tract. Resident microbiota are capable of influencing AHR-dependent signaling pathways via production of an array of bioactive mols. that act as AHR agonists, such as indole or indole-3-aldehyde. Bacteria produce a number of quinoline derivatives, of which some function as quorum-sensing mols. Thus, we screened relevant hydroxyquinoline derivatives for AHR activity using AHR responsive reporter cell lines. 2,8-Dihydroxyquinoline (2,8-DHQ) was identified as a species-specific AHR agonist that exhibits full AHR agonist activity in human cell lines, but only induces modest AHR activity in mouse cells. Addnl. dihydroxylated quinolines tested failed to activate the human AHR. Nanomolar concentrations of 2,8-DHQ significantly induced CYP1A1 expression and, upon cotreatment with cytokines, synergistically induced IL6 expression. Ligand binding competition studies subsequently confirmed 2,8-DHQ to be a human AHR ligand. Several dihydroxyquinolines were detected in human fecal samples, with concentrations of 2,8-DHQ ranging between 0 and 3.4 pmol/mg feces. Addnl., in mice the microbiota was necessary for the presence of DHQ in cecal contents. These results suggest that microbiota-derived 2,8-DHQ would contribute to AHR activation in the human gut, and thus participate in the protective and homeostatic effects observed with gastrointestinal AHR activation.

Different reactions of this compound(2,6-Dichloropurine)Recommanded Product: 2,6-Dichloropurine require different conditions, so the reaction conditions are very important.

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

Recommanded Product: 5451-40-1. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2,6-Dichloropurine, is researched, Molecular C5H2Cl2N4, CAS is 5451-40-1, about The Direct Decarboxylative N-Alkylation of Azoles, Sulfonamides, Ureas, and Carbamates with Carboxylic Acids via Photoredox Catalysis.

A method for direct decarboxylative C-N coupling of carboxylic acids RC(O)OH (R = naphthalen-1-yl, 2-phenylpropan-2-yl, 1,2,3,4-tetrahydronaphthalen-1-yl, etc.) with a range of nitrogen nucleophiles, e.g., 5-(4-bromophenyl)-2H-1,2,3,4-tetrazol-2-yl has been described. This platform employs visible-light-mediated photoredox catalysis and an iodine(III) reagent to generate carbocation intermediates directly from aliphatic carboxylic acids via a radical-polar crossover mechanism. A variety of C-N bond-containing products, e.g., I are constructed from a diverse array of nitrogen heterocycles, including pyrazoles, imidazoles, indazoles, and purine bases. Furthermore, sulfonamides, ureas, and carbamates can also be utilized as a nucleophile to generate a selection of N-alkylated products. Notably, a two-step approach to construct free amines directly from the carboxylic acids is accomplished using Cbz-protected amine as a nucleophile.

Different reactions of this compound(2,6-Dichloropurine)Recommanded Product: 5451-40-1 require different conditions, so the reaction conditions are very important.

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 6-Hydroxy-2-methylpyrimidin-4(3H)-one, is researched, Molecular C5H6N2O2, CAS is 1194-22-5, about Synthesis, structure, and properties of oligo-tridentate ligands; covalently assembled precursors of coordination arrays.Category: oxazolidine.

Oligo-tridentate ligands based on alternating pyridines and pyrimidines, e.g., I (R = H, Ph, 9-anthryl, R’ = H, Me, CH2Br) and II (R = H, Me, Ph), were synthesized by Stille-type carbon-carbon bond-forming reactions. The terpyridine-like sites are designed to coalign upon metal complexation, giving rise to organized and rigidly spaced metal ions. Peripheral functionalization of the basic bis-tridentate framework was explored. The heterocycles in the ligands are in an all-trans conformation about the interannular bonds as indicated by comparison of their 1H NMR spectra. An x-ray crystal structure anal. of the nonchiral tris-tridentate ligand II (R = H) reveals a helical structure in the solid state. The seven heterocycles form a helical structure with resulting overlap of the terminal pyridines. Their centroid-to-centroid distance is 4.523 Å with 38.8° between the planes. NMR investigations support a helical conformation in solution as well. Electrochem. and UV absorption measurements indicate that the LUMO resides on the pyrimidine moiety of the ligands.

Different reactions of this compound(6-Hydroxy-2-methylpyrimidin-4(3H)-one)Category: oxazolidine require different conditions, so the reaction conditions are very important.

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 6-Hydroxy-2-methylpyrimidin-4(3H)-one, is researched, Molecular C5H6N2O2, CAS is 1194-22-5, about Infrared spectra of the biological molecule 4,6-dihydroxy-2-methylpyrimidine, the main research direction is IR spectra hydroxymethylpyrimidine; pyrimidine derivative IR spectra.Quality Control of 6-Hydroxy-2-methylpyrimidin-4(3H)-one.

The IR absorption spectra of 4,6-dihydroxy-2-methylpyrimidine were recorded spectrophotometrically in the region 250-4000 cm-1 using KBr and Nujol mull techniques. The spectra were analyzed assuming C2v point group symmetry for the mol. The assignments were proposed and discussed and the tautomeric behavior of the mol. was also discussed.

After consulting a lot of data, we found that this compound(1194-22-5)Quality Control of 6-Hydroxy-2-methylpyrimidin-4(3H)-one can be used in many types of reactions. And in most cases, this compound has more advantages.

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

Safety of Ethyl 3-bromo-2-oxopropanoate. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Ethyl 3-bromo-2-oxopropanoate, is researched, Molecular C5H7BrO3, CAS is 70-23-5, about Synthesis of the deacetoxytubuvaline fragment of pretubulysin and its lipophilic analogs for enhanced permeability in cancer cell lines. Author is Reddy, Ramesh B.; Dudhe, Premansh; Chelvam, Venkatesh.

In the last two decades, tubulysins have emerged as alternatives to microtubule depolymerizing agents such as colchicine and vinblastine, which are well-established anticancer agents. However, the complex structure of tubulysins has always posed a challenge for synthetic chemists to scale up the production of these compounds We report a new strategy for the practical gram-scale synthesis of a (4R)-4-[( tert-butoxycarbonyl)amino]-5-methylhexanoic acid through regioselective cleavage of a chiral aziridine ring with a vinyl Grignard reagent to afford tert-Bu [(1R)-1-isopropylbut-3-en-1-yl]carbamate, which was subjected to regioselective hydroboration-oxidation with 9-BBN. The resulting (4R)-4-[( tert-butoxycarbonyl)amino]-5-methylhexanoic acid was successfully transformed into the deacetoxytubuvaline fragment of pretubulysin or its highly lipophilic methyl-substituted thiazole and oxazole analogs for incorporation into pretubulysins. Increasing the lipophilicity of tubulysin or pretubulysin mols. should enhance their cell permeability and cytotoxicity in cancer cell lines.

The article 《Synthesis of the deacetoxytubuvaline fragment of pretubulysin and its lipophilic analogs for enhanced permeability in cancer cell lines》 also mentions many details about this compound(70-23-5)Safety of Ethyl 3-bromo-2-oxopropanoate, you can pay attention to it, because details determine success or failure

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

Safety of 6-Hydroxy-2-methylpyrimidin-4(3H)-one. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 6-Hydroxy-2-methylpyrimidin-4(3H)-one, is researched, Molecular C5H6N2O2, CAS is 1194-22-5, about Cocrystal structure, thermal behavior, and DFT calculations between FOX-7 and 1,10-Phenanthroline. Author is Li, Keyao; Ren, Xiangwen; Fu, Shuqin; Zhu, Jiaping.

Cocrystal of FOX-7 (1,1-diamino-2,2-dinitroethene) and Phen (1,10-Phenanthroline) has been synthesized and characterized by X-ray crystallog. The single crystal results show that FOX-7 and its cocrystal were crystallized in the monoclinic space groups P21/n and P21/c, resp. Thermal stability of FOX-7 and FOX-7·Phen were studied by DSC, the first exothermic peak temperatures (TP) of FOX-7 and FOX-7·Phen occurs at 223.2 and 232.7 °C, resp.; indicating that FOX-7·Phen is more stable than FOX-7. Thermokinetic parameters such as the activation energy Ea and pre-exponential factor A were 321.4 kJ mol-1 and 1.166 x 1033 s-1, resp. DFT studies including geometry optimization, HOMO-LUMO anal., Mulliken charge and UV-visible spectral data were also calculated by DFT-B3LYP/6-31 + G** level.

The article 《Cocrystal structure, thermal behavior, and DFT calculations between FOX-7 and 1,10-Phenanthroline》 also mentions many details about this compound(1194-22-5)Safety of 6-Hydroxy-2-methylpyrimidin-4(3H)-one, you can pay attention to it, because details determine success or failure

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

Safety of 2,6-Dichloropurine. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 2,6-Dichloropurine, is researched, Molecular C5H2Cl2N4, CAS is 5451-40-1, about Synthesis and anticancer activity of N-9- and N-7- substituted 1,2,3 triazole analogues of 2,6-di-substituted purine.

A library of N-9- and N-7-substituted 1,2,3 triazole analogs I [R1 = 2-hydroxyethylamino, benzylamino; R2 = pyrrolidin-1-yl, 1-piperidyl; R3 = H, 4-F, 2-Cl, etc.] and II [R4 = benzylamino; R5 = pyrrolidin-1-yl, 1-piperidyl; R6 = 4-MeO, 4-Br, 4-I] were generated on the 2,6-di-substituted purine upon reaction with various substituted aromatic azides. The synthesized analogs I and II were screened for in-vitro cytotoxic activity against various human cancer cell lines like (HCT-1 (colon), THP-1 (leukemia), IMR-32 (neuroblastoma) and A-549 (lung)). From the bioassay results, it was observed that even though most of the synthesized derivatives I and II exhibited a good potency against various screened cancer cell lines, but few of the analogs like I [R1 = benzylamino; R2 = pyrrolidin-1-yl, 1-piperidyl; R3 = H] and compound I [R1 = benzylamino; R2 = pyrrolidin-1-yl, R3 = 4-Cl] were found to be the most potent analogs in the series, with compound I [R1 = benzylamino, R2 = pyrrolidin-1-yl, R3 = H] showing IC50 values of 0.08 and 0.4 μM against THP-1 and A-549 cell lines, resp.

The article 《Synthesis and anticancer activity of N-9- and N-7- substituted 1,2,3 triazole analogues of 2,6-di-substituted purine》 also mentions many details about this compound(5451-40-1)Safety of 2,6-Dichloropurine, you can pay attention to it, because details determine success or failure

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Solution-Phase Synthesis of a Library of 3,5,7-Trisubstituted 3H-[1,2,3]triazolo[4,5-d]pyrimidines, published in 2003-10-31, which mentions a compound: 1194-22-5, Name is 6-Hydroxy-2-methylpyrimidin-4(3H)-one, Molecular C5H6N2O2, SDS of cas: 1194-22-5.

An efficient solution-phase parallel synthesis of a library of 3,5,7-trisubstituted [1,2,3]triazolo[4,5-d]pyrimidines I [R1 = H, Me; R2 = Ph, PhCH2, 4-ClC6H4, 4-MeC6H4, 4-MeOC6H4; R3 = H, R4 = HOCH2CH2, cyclohexyl, Ph, PhCH2, PhNH, PhCH2O, etc.; R3R4 = (CH2)2N(CO2CMe3)(CH2)2] is described. 5-Amino-4,6-dichloropyrimidines II, prepared from monosubstituted amidines in four steps, reacted with primary amines R2NH2 to yield, after the following diazotization/intramol. cyclization, the 7-chloro-3,5-disubstituted [1,2,3]triazolo[4,5-d]pyrimidines III as penultimate intermediates. Final nucleophilic substitution of the 7-chloro group in III with an excess of a primary or secondary amine, a hydrazine or a O-alkyl hydroxylamine proceeds efficiently. Scavenging of the excess amine with a resin-bound isocyanate in the presence of resin-bound piperidine as a base afforded the desired 3,5,7-trisubstituted [1,2,3]triazolo[4,5-d]pyrimidines I in good yields and purities.

The article 《Solution-Phase Synthesis of a Library of 3,5,7-Trisubstituted 3H-[1,2,3]triazolo[4,5-d]pyrimidines》 also mentions many details about this compound(1194-22-5)SDS of cas: 1194-22-5, you can pay attention to it, because details determine success or failure

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Visible-light-promoted 3,5-dimethoxyphenyl glycoside activation and glycosylation》. Authors are Cao, Yafei; Zhou, Minmin; Mao, Run-Ze; Zou, You; Xia, Feng; Liu, Da-Ke; Liu, Jianhui; Li, Qin; Xiong, De-Cai; Ye, Xin-Shan.The article about the compound:2,6-Dichloropurinecas:5451-40-1,SMILESS:C2=NC1=C(C(=NC(=N1)Cl)Cl)[NH]2).Synthetic Route of C5H2Cl2N4. Through the article, more information about this compound (cas:5451-40-1) is conveyed.

A new glycosylation method promoted by visible light with 3,5-dimethoxyphenyl glycoside as the donor was developed. This protocol delivers both O-glycosides and N-glycosides in moderate to excellent yields using a wide range of O-nucleophiles and nucleobases as the glycosyl acceptors.

Although many compounds look similar to this compound(5451-40-1)Synthetic Route of C5H2Cl2N4, numerous studies have shown that this compound(SMILES:C2=NC1=C(C(=NC(=N1)Cl)Cl)[NH]2), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem

Electric Literature of C5H2Cl2N4. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,6-Dichloropurine, is researched, Molecular C5H2Cl2N4, CAS is 5451-40-1, about Scaffold hopping of the SYK inhibitor entospletinib leads to broader targeting of the BCR signalosome. Author is Jorda, Radek; Krajcovicova, Sona; Kralova, Petra; Soural, Miroslav; Krystof, Vladimir.

Spleen tyrosine kinase (SYK) and Bruton’s tyrosine kinase (BTK) are attractive targets in human haematol. malignancies with excessively activated B-cell receptor (BCR) signalling pathways. Entospletinib is a SYK inhibitor that has been evaluated as a clin. candidate. Design and synthesis of five isosteres in which the imidazo[1,2-a]pyrazine scaffold of entospletinib was altered to pyrazolo[3,4-d]pyrimidine, pyrrolo[3,2-d]pyrimidine, imidazo[4,5-b]pyridine, imidazo[4,5-c]pyridine and purine is reported. The last two isosteres were the most potent SYK inhibitors, with IC50 values in the mid-nanomolar range. Importantly, three compounds also inhibited BTK more effectively than did entospletinib. Further experiments then showed that BCR signalling was suppressed in Ramos cells by the potent compounds Preliminary kinase inhibition screening also revealed LCK and SRC as addnl. targets. These results further support the hypothesis that multikinase targeting compounds could produce more robust responses in the treatment of B lymphoid neoplasms.

Although many compounds look similar to this compound(5451-40-1)Electric Literature of C5H2Cl2N4, numerous studies have shown that this compound(SMILES:C2=NC1=C(C(=NC(=N1)Cl)Cl)[NH]2), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H7NO – PubChem