Day: November 29, 2022

Zhang, Yue-Mei published the artcileSyntheses and in vitro evaluation of arylsulfone-based MMP inhibitors with heterocycle-derived zinc-binding groups (ZBGs), Recommanded Product: 2-Methoxynicotinaldehyde, the main research area is heterocyclic arylsulfone derivative preparation matrix metalloproteinase inhibitor.

Several classes of arylsulfone-based MMP-2/-9 inhibitors utilizing 6- to 8-membered heterocyclic rings, e.g., I, as zinc-binding groups (ZBGs) have been synthesized and their enzyme inhibitory activities were evaluated. Although a number of 6- and 7-membered heterocycles were effective, the most potent arylsulfone inhibitors are based on the rigid 1- or 3-hydroxypyridone ZBG.

Bioorganic & Medicinal Chemistry Letters published new progress about Structure-activity relationship, metalloproteinase-inhibiting. 71255-09-9 belongs to class pyridine-derivatives, name is 2-Methoxynicotinaldehyde, and the molecular formula is C7H7NO2, Recommanded Product: 2-Methoxynicotinaldehyde.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Wang, Huan published the artcileSynthesis and Evaluation of 1,2,4-Triazolo[1,5-a]pyrimidines as Antibacterial Agents Against Enterococcus faecium, Product Details of C7H7NO2, the main research area is vancomycin resistant Enterococcus faecium infection antibacterial triazolopyrimidine; triazolopyrimidine preparation metabolic stability low intrinsic clearance; cell wall biosynthesis antibiotic target triazolopyrimidine; aldehyde three component Biginelli heterocyclization dicarbonyl compound alkylthiotriazolamine.

Rapid emergence of antibiotic resistance is one of the most challenging global public health concerns. In particular, vancomycin-resistant Enterococcus faecium infections have been increasing in frequency, representing 25% of enterococci infections in intensive care units. A novel class of 1,2,4-triazolo[1,5-a]pyrimidines, e.g., I [R1 = C6H4R’, 2-thienyl, 3-thienyl, 2-furyl, 2-pyrrolyl, 2-imiazolyl, 3-indolyl, 3-pyridyl, 2-methoxy-3-pyridyl, 4-pyridyl, cyclohexyl; R’ = i-Pr-4, H, Me-4, Et-4, i-Bu-4, OH-4, OMe-4, OH-3-OMe-4, (OMe)2-3,4, O(Pr-i)-4, OCF3-4, SMe-4, etc.], II [R1 = C6H4NMe2-4, R2 = OEt,NHMe, R3 = SCH2Ph; R1 = 2-thienyl, R2 = OEt, R3 = SCH2C6H4CO2H-4], III [R1 = C6H4NMe2-4, R3 = SCH2Ph; R1 = C6H4OMe-4, C6H4OEt-2, R3 = SCH2C6H4CO2H-4; R1 = C6H3(OMe)2-3,4, R3 = CH2C6H4F-4; R1 = C6H4Cl-4, R3 = SCH2-(2-naphthyl)],. IV [R1 = C6H4NMe2-4, R2 = H, R3 = SCH2Ph; R1 = C6H4Me-4, R2 = H, R3 = SCH2C6H4Me-2; R1 = C6H4Me-4, R2 = Me-2, Me2-2,4, R3 = SCH2C6H4Me-3; R1 = C6H4Et-4, R2 = H, Me-2, R3 = SCH2C6H4OMe-3; etc.], V [R3 = H, NH2, CO2Me, CO2Et, SMe, SCH2CONH2, SCH2CO2Et, SCH2CH2NHCO2CH2Ph, SCH2-(4-pyridyl), S(2-pyridyl), SCH2C6H4R”-4; R” = Me, OMe, SMe, CF3, OCF3, SCF3, NO2, CN, CO2H, CO2Me] and VI [R1 = 2-thienyl, R3 = H; R1 = C6H4CHMe2-4, C6H4CO2H-4, R3 = SCH2CH2NHCO2CH2Ph], active against E. faecium is reported herein. We used a three-component Biginelli-like heterocyclization reaction for the synthesis of a series of these derivatives based on reactions of aldehydes, β-dicarbonyl compounds, and 3-alkylthio-5-amino-1,2,4-triazoles. The resulting compounds were assayed for antimicrobial activity against the ESKAPE panel of bacteria, followed by investigation of their in vitro activities. These analyses identified a subset of 1,2,4-triazolo[1,5-a]pyrimidines that had good narrow-spectrum antibacterial activity against E. faecium and exhibited metabolic stability with low intrinsic clearance. Macromol. synthesis assays revealed cell-wall biosynthesis as the target of these antibiotics.

Journal of Medicinal Chemistry published new progress about Acinetobacter baumannii (antimicrobials). 71255-09-9 belongs to class pyridine-derivatives, name is 2-Methoxynicotinaldehyde, and the molecular formula is C7H7NO2, Product Details of C7H7NO2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Ding, Huaiwei published the artcileSynthesis and cytotoxic activity of some novel N-pyridinyl-2-(6-phenylimidazo[2,1-b]thiazol-3-yl)acetamide derivatives, Formula: C9H11N3O3, the main research area is pyridine imidazothiazoleacetamide preparation antitumor.

Novel compounds bearing imidazo[2,1-b]thiazole scaffolds were designed and synthesized based on the optimization of the virtual screening hit compound N-(6-morpholinopyridin-3-yl)-2-(6-phenylimidazo[2,1-b]thiazol-3-yl)acetamide (I) and were tested for their cytotoxicity against human cancer cell lines, including HepG2 and MDA-MB-231. 2-{6-(4-Chlorophenyl)imidazo[2,1-b]thiazol-3-yl}-N-{6-[4-(4-methoxybenzyl)piperazin-1-yl]pyridin-3-yl}acetamide, with slightly higher inhibition on VEGFR2 than I (5.72 and 3.76% inhibitory rate at 20 μM, resp.), was a potential inhibitor against MDA-MB-231 (IC50 = 1.4 μM) compared with sorafenib (IC50 = 5.2 μM), and showed more selectivity against MDA-MB-231 than HepG2 cell line (IC50 = 22.6 μM).

Molecules published new progress about Antitumor agents. 26820-62-2 belongs to class pyridine-derivatives, name is 4-(5-Nitropyridin-2-yl)morpholine, and the molecular formula is C9H11N3O3, Formula: C9H11N3O3.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Huo, Peng published the artcileEffects of alkyl chain length on film morphologies and photocurrent responses of tetrathiafulvalene-bipyridinium charge-transfer salts: a study in terms of structures, Name: 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is tetrathiafulvalene bipyridine charge transfer complex crystal structure.

Viologen dication derivatives with a series of alkyl chains are used to assemble charge-transfer salts and films with dimethylthio-tetrathiafulvalene-bicarboxylate which aims to explore the relationship of the alkyl chain length to mol. structures and film morphologies which are important points for the design of mol. materials and manipulation of mol. devices. Four charge-transfer salts generally formulated as [(CnV)(HL)2] [n = 4(1), 8(2), 12(3) and 16(4)] are prepared and 1-3 are characterized by single-crystal X-ray structural anal. In the short alkyl chain compound, TTF and C4V moieties are regularly arranged and effectively stacked with strong charge-transfer interactions. Lengthening the alkyl chain of the bipyridinium cation reduces the regular and close arrangement of the cations and anions in the crystals, which weakens the charge-transfer interaction while increasing the amphiphilic assembly of the films. Their film morphologies change from crystals to fused crystals, band-like structures and finally to smooth films with the increase of the alkyl chain length. The effects of alkyl chain length on photocurrent intensity are different between the crystal sample-modified electrodes (in the order of 1 > 2 > 3 = 4) and the film-modified electrodes (in the order of 2 > 1 = 3 > 4), because both inter-ion interactions and film-forming properties should be considered for the film electrodes. This is a systematic study of the effect of alkyl chain substitution on film morphologies in terms of crystal structures.

CrystEngComm published new progress about Charge transfer interaction. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Name: 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

DiMauro, Erin F. published the artcileApplication of a Parallel Synthetic Strategy in the Discovery of Biaryl Acyl Sulfonamides as Efficient and Selective NaV1.7 Inhibitors, Synthetic Route of 1387634-81-2, the main research area is sulfonamide biaryl preparation voltage gated sodium channel inhibitory activity.

The majority of potent and selective hNaV1.7 inhibitors possess common pharmacophoric features that include a heteroaryl sulfonamide headgroup and a lipophilic aromatic tail group. Recently, reports of similar aromatic tail groups in combination with an acyl sulfonamide headgroup have emerged, with the acyl sulfonamide bestowing levels of selectivity over hNaV1.5 comparable to the heteroaryl sulfonamide. Beginning with com. available carboxylic acids that met selected pharmacophoric requirements in the lipophilic tail, a parallel synthetic approach was applied to rapidly generate the derived acyl sulfonamides. A biaryl acyl sulfonamide hit from this library was elaborated, optimizing for potency and selectivity with attention to physicochem. properties. The resulting novel leads are potent, ligand and lipophilic efficient, and selective over hNaV1.5. Representative lead I demonstrates selectivity over other human NaV isoforms and good pharmacokinetics in rodents. The biaryl acyl sulfonamides reported herein may also offer ADME advantages over known heteroaryl sulfonamide inhibitors.

Journal of Medicinal Chemistry published new progress about Cytochrome P450 CYP3A4 inhibitors. 1387634-81-2 belongs to class pyridine-derivatives, name is 3-Chloro-2-isobutoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine, and the molecular formula is C15H23BClNO3, Synthetic Route of 1387634-81-2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Vu, Hoang Nam published the artcileSynthesis and biological evaluation of picolinamides and thiazole-2-carboxamides as mGluR5 (metabotropic glutamate receptor 5) antagonists, Product Details of C6H7ClN2, the main research area is thiazolecarboxamide aryl preparation metabotropic glutamate receptor antagonist; picolinamide aryl preparation metabotropic glutamate receptor antagonist; Antagonist; Metabotropic glutamate receptor; Molecular docking; Picolinamides; Thiazole-2-carboxamides.

Herein the synthesis and biol. evaluation of picolinamides and thiazole-2-carboxamides as potential mGluR5 antagonists are described. It was found that a series of N-aryl-4-R-2-thiazolecarboxamides (R = Br, Me, CN; aryl = 3-FC6H4, 3-NCC6H4, 2-pyridyl, 6-chloro-2-pyridyl, etc.) (I) showed better inhibitory activity against mGluR5. The compounds I (R = Br; aryl = 3-BrC6H4, 6-methyl-2-pyridyl) have been identified as potent antagonists (IC50 = 274 and 159 nM) showing excellent in vitro stability profile. Mol. docking study using the crystal structure of mGluR5 revealed that these two compounds fit the allosteric binding site of mavoglurant well.

Bioorganic & Medicinal Chemistry Letters published new progress about Homo sapiens. 133627-45-9 belongs to class pyridine-derivatives, name is 2-Chloro-4-methylpyridin-3-amine, and the molecular formula is C6H7ClN2, Product Details of C6H7ClN2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Cera, Gianpiero published the artcileIon-Pair Selective Conformational Rearrangement of Sulfonamide Calix[6]arene-Based Pseudorotaxanes, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, the main research area is trisulfonamide calixarene viologen ion pair pseudorotaxane conformation.

We describe the synthesis of a new class of trisulfonamide calix[6]arene-based wheels that can bind dialkylviologen salts, in apolar media. The threading process occurs through a selective ion-pair recognition, established by the sulfonamide groups with the counterions of the bipyridinium salts, that dictates a conformational rearrangement of the corresponding pseudorotaxanes.

Organic Letters published new progress about Conformation. 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Safety of 1,1-Di-n-octyl-4,4-bipyridinium Dibromide.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Sun, Chi-Yu published the artcileSynthesis and antiproliferative activity of novel 4-substituted-phenoxy-benzamide derivatives, Recommanded Product: 4-(5-Nitropyridin-2-yl)morpholine, the main research area is phenoxybenzamide cycloaliphatic amine preparation human antiproliferative hedgehog signaling inhibitor.

A series of novel 4-substituted-phenoxy-benzamide derivatives bearing an aryl cycloaliphatic amine moiety I (R1 = Me, OCF3, OMe, Cl; X = O, CH2), II (R2 = Ph, 3-MeOC6H4, 2-pyridyl, 3,4-Cl2C6H3, etc.) were synthesized and evaluated for antiproliferative activity against SW620, HT29 and MGC803 cancer cell lines in vitro. The pharmacol. data demonstrated that the majority of target compounds exhibited moderate efficacy in HT29 and MGC803 cell lines. Compound I (R1 = OCF3; X = O) showed promising inhibition of hedgehog (Hh) signaling pathway in an Hh-related assay. In addition, the superposition pattern of I (R1 = OCF3; X = O) showed a good fit for a pharmacophoric model generated by Hh inhibitors and provided a basis for further structural optimization.

Chinese Chemical Letters published new progress about Antitumor agents. 26820-62-2 belongs to class pyridine-derivatives, name is 4-(5-Nitropyridin-2-yl)morpholine, and the molecular formula is C9H11N3O3, Recommanded Product: 4-(5-Nitropyridin-2-yl)morpholine.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Duan, Gongping published the artcileSynthesis and photochromic studies of η6-mesitylene ruthenium(ii) complexes bearing N-heterocyclic carbene ligands with the dithienylethene moiety, Computed Properties of 17117-13-4, the main research area is dithienylethene imidazolidene carbene ruthenium mesitylene half sandwich preparation structure; photochromic mesitylene ruthenium heterocyclic carbene dithienylethene complex; crystal mol structure mesityleneruthenium dithienylethene imidazolidene carbene complex; electrochem redox mesityleneruthenium dithienylethene imidazolidene carbene half sandwich.

A series of half-sandwich type ruthenium(ii) complexes, [(η6-mesitylene)Ru(NHC-L)Cl]PF6 (NHC = N-heterocyclic carbene, L = azole and imine ligand), containing the dithienylethene moiety has been synthesized and characterized by 1H NMR, x-ray crystallog. and electronic absorption spectroscopy. These complexes show photochromic properties upon UV photo-irradiation to generate the closed forms of the dithienylethene moiety.

New Journal of Chemistry published new progress about Crystal structure. 17117-13-4 belongs to class pyridine-derivatives, name is 2-Bromo-4-ethoxypyridine, and the molecular formula is C7H8BrNO, Computed Properties of 17117-13-4.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Schlosser, Manfred published the artcileThe reactivity of 2-fluoro- and 2-chloropyridines toward sodium ethoxide: Factors governing the rates of nucleophilic (het)aromatic substitutions, Related Products of pyridine-derivatives, the main research area is reactivity fluoropyridine chloropyridine sodium ethoxide nucleophilic aromatic heteroaromatic substitution.

The relative displacement rates of the halide substituent from 2-fluoro- and 2-chloropyridines by EtONa in EtOH at +25° were assessed by competition kinetics. The 2-fluoropyridine reacts 320 times faster than the chloro analog. A CF3 group increases the reactivity more than single halogen atoms do, whatever the element, and the latter are superior to Me3Si groups. Substituents accommodated at the 4-position operate through their inductive effect, whereas at the 3-position, this action may be attenuated by steric hindrance. Almost all 5-substituents enhance the rate of the nucleophilic substitution occurring at the 2-position. The sole exception concerns the F-atom at the 5-position which retards the reaction, presumably by lone-pair/lone-pair repulsion with the neg. charge building up at the central C-atom of the intermediate Meisenheimer complex. The substituent effects are additive. Therefore, by using the increments derived from the present work, the rates of future reactions should be predictable with fair accuracy.

Helvetica Chimica Acta published new progress about Ethoxylation kinetics. 42144-78-5 belongs to class pyridine-derivatives, name is 2-Chloro-6-ethoxypyridine, and the molecular formula is C7H8ClNO, Related Products of pyridine-derivatives.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem