Category: pyridine-derivatives

Tapanyigit, Ozan; Demirkol, Onur; Guler, Ece; Ersatr, Mehmet; Cam, Muhammet Emin; Giray, Elife Sultan published the artcile< Synthesis and investigation of anti-inflammatory and anticonvulsant activities of novel coumarin-diacylated hydrazide derivatives>, Product Details of C7H7NO2, the main research area is coumarin diacylated hydrazide derivative anticonvulsant anti inflammatory.

A number of novel coumarin derivatives synthesized by the reaction of 3-carbonyl chloride coumarin with some substituted aryl acid hydrazides to investigate their anti-inflammatory and anticonvulsant activities. Carrageenan (0.1 mL of 1%, w/v) was injected subplantarly in the right paw of rats to induce an acute model of inflammation. Anti-inflammatory efficacy was evaluated for 5 h at 3 different dosages 5, 10, 25 mg/kg. After that, the changes in the level of paw edema volumes and percentage inhibition of all groups were observed and the most effective coumarin derivative was found as N′-(2-hyroxybenzoyl)-2-oxo-2H-chromene-3-carbohydrazide. In addition, N′-(2-oxo-2H-chromene-3-carbonyl)nicotinohydrazide, (E)-N′-(3-(4-hydroxyphenyl)acryloyl)-2-oxo-2H-chromene-3-carbohydrazide, and N′-(5-amino-2-hydroxybenzoyl)-2-oxo-2H-chromone-3-carbohydrazide showed their anti-inflammatory effects in a dose-dependent manner. On the other hand, pentylenetetrazole (PTZ, 80 mg/kg, i.p.)-induced seizure model was used to investigate the anticonvulsant activities of six newly synthesized coumarin derivatives in mice. Hybrid compound of salicylic acid hydrazide and 3-carbonyl chloride coumarin was found the most promising anticonvulsant agent among all treatment groups according to the onset of seizure and survival rate. Moreover, (E)-N′-cinnamoyl-2-oxo-2H-chromene-3-carbohyrazide and (E)-N′-(3-(4-hyroxyphenyl)acryloyl)-2-oxo-2H-chromene-3-carbohydrazide has potential anticonvulsant efficiency in low doses (30 mg/kg). The anticonvulsant effect of these coumarin derivatives may be through enhanced GABA-mediated inhibition in the brain.

Arabian Journal of Chemistry published new progress about Anti-inflammatory agents. 93-60-7 belongs to class pyridine-derivatives, and the molecular formula is C7H7NO2, Product Details of C7H7NO2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Tunca, Ekrem; Bulbul, Metin; Ilkimen, Halil; Canlidinc, Rukiye Saygili; Yenikaya, Cengiz published the artcile< Investigation of the effects of the proton transfer salts of 2-aminopyridine derivatives with 5-sulfosalicylic acid and their Cu(II) complexes on cancer-related carbonic anhydrases: CA IX and CA XII>, Reference of 21901-29-1, the main research area is cancer sulfosalicylic acid aminopyridine carbonic anhydrase IX XII.

Abstract: Six novel proton transfer compounds (15-20) obtained from 5-sulfosalicylic acid (1) and 2-aminopyridine derivatives [2-amino-3-benzyloxypyridine (2), 2-amino-3-hydroxylpyridine (3), 2-amino-3-methylpyridine (4), 2-amino-3-nitropyridine (5), 2-amino-3-nitro-4-methylpyridine (6) and 2-amino-3-nitro-6-methylpyridine (7)] and their Cu(II) complexes (21-26) along with the Cu(II) complexes of 2-7 (9-14) have been prepared and characterized by spectroscopic techniques. The in vitro inhibition effects of all compounds on CA IX and CA XII isoenzymes as well as on hCA I and hCA II were investigated and the results were compared. The inhibition studies showed that the synthesized compounds are more selective to CA XII isoenzyme. The hydratase IC50 values of the compounds were determined as in the range of 15.61 ± 2.32 uM-99.02 ± 4.99 uM for hCA I, 22.36 ± 0.75 uM-77.03 ± 4.03 uM for hCA II, 23.90 ± 1.67 uM-138.63 ± 5.45 uM for CA IX, and 9.50 ± 1.16 uM-693.15 ± 8.96 uM for CA XII. The inhibition data have been analyzed using one-way anal. of variance for multiple comparisons (p < 0.0001). Chemical Papers published new progress about Enzyme inhibition kinetics. 21901-29-1 belongs to class pyridine-derivatives, and the molecular formula is C6H7N3O2, Reference of 21901-29-1.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Angnes, Ricardo A.; Oliveira, Juliana M.; Oliveira, Caio C.; Martins, Nelson C.; Correia, Carlos Roque D. published the artcile< Stereoselective Synthesis of Aryl Cyclopentene Scaffolds by Heck-Matsuda Desymmetrization of 3-Cyclopentenol>, COA of Formula: C13H15F3N2O, the main research area is arylcyclopentenol diastereoselective enantioselective preparation; arylcyclopentanone enantioselective preparation; Heck Matsuda desymmetrization cyclopentenol aryldiazonium salt palladium pyridinyloxazoline catalyst; diastereoselective enantioselective Heck Matsuda reaction aryldiazonium salt cyclopentenol; bromophenyl chlorophenyl cyclopentenol mol crystal structure; Heck reaction; aryldiazonium salts; chiral N,N ligands; desymmetrization; palladium.

In the presence of palladium bis(trifluoroacetate) and nonracemic (trifluoromethyl)pyridinyloxazoline I, aryldiazonium trifluoroborates RN2+ BF4- [R = 4-MeOC6H4, 2-MeOC6H4, 3,4-(MeO)2C6H3, 3,4,5-(MeO)3C6H2, 4-HOC6H4, 2-HOC6H4, Ph, 4-BrC6H4, 4-ClC6H4, 4-O2NC6H4, 3-O2NC6H4, 2-O2NC6H4, 4-F3CC6H4, 3-F3CC6H4, 2-F3CC6H4] underwent enantioselective Heck-Matsuda desymmetrization reactions with 3-cyclopenten-1-ol to give arylcyclopentenols II [R = 4-MeOC6H4, 2-MeOC6H4, 3,4-(MeO)2C6H3, 3,4,5-(MeO)3C6H2, 4-HOC6H4, 2-HOC6H4, Ph, 4-BrC6H4, 4-ClC6H4, 4-O2NC6H4, 3-O2NC6H4, 2-O2NC6H4, 4-F3CC6H4, 3-F3CC6H4, 2-F3CC6H4] in 20-70% yields and in 85-99% ee and (in some cases) nonracemic 3-arylcyclopentenones in 12-27% yields and in 17-93% ee. The hydroxy group of the cyclopentenol reactant acted as a directing group to control the relative stereochem. of the coupling reaction. The structures of II (R = 4-BrC6H4, 4-ClC6H4) were determined by X-ray crystallog.

Chemistry – A European Journal published new progress about Alcohols, unsaturated Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 1416819-91-4 belongs to class pyridine-derivatives, and the molecular formula is C13H15F3N2O, COA of Formula: C13H15F3N2O.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Hu, Jun-Chao; Sun, Shanshan; Li, Ming-De; Xia, Wu; Wu, Jin; Liu, Hongfang; Wang, Feng published the artcile< A biomimetic self-assembled cobaloxime@CdS/rGO hybrid for boosting photocatalytic H2 production>, Synthetic Route of 3731-53-1, the main research area is biomimetic cobaloxime CdS rGO hybrid photocatalytic hydrogen prduction.

A biomimetic CoPe@CdS/rGO hybrid that self-assembles via the integration of a mol. cobalt catalyst and CdS nano-semiconductor on reduced graphene oxide was constructed for boosting photocatalytic H2 production Photoinduced electron transfer from CdS/rGO to the mol. catalyst occurs and a long-lived charge-separation state forms for high H2 production

Chemical Communications (Cambridge, United Kingdom) published new progress about Attenuated-total-reflectance IR spectroscopy. 3731-53-1 belongs to class pyridine-derivatives, and the molecular formula is C6H8N2, Synthetic Route of 3731-53-1.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Houlihan, Joanna C. C.; Moratti, Stephen C.; Hanton, Lyall R. published the artcile< Formation of a robust, double-walled LiMOF from an L-shaped di-substituted N-heterocyclic adamantane-based ligand>, Related Products of 93-60-7, the main research area is preparation lithium copper zinc heterocyclic adamantane complex; crystal structure lithium copper zinc heterocyclic adamantane complex; lithium copper zinc heterocyclic adamantane MOF.

The properties of adamantane render it an attractive building block towards the synthesis of robust frameworks. This work describes the synthesis of the L-shaped 1,3-bis(3′-carboxypyridine)adamantane (L1) ligand and the corresponding Li(I), Zn(II) and Cu(II) frameworks. Three topol. analogous Li(I) frameworks LiMOF12, LiMOF30 and LiMOF50 are reported, with calculated solvent accessible void volumes of 46, 43 and 36%, resp. The reaction between the carboxylate groups of L1 and the Li(I) cations gave Li-carboxylate rods. The Li-carboxylate rods contributed to the formation of a double-walled MOF with large, open one dimensional channels. The synergistic effect of the double wall, lithium-carboxylate rods and the adamantane core itself, gave a robust network stable up to temperatures of 300-350° and a min. of three months stability in air. Furthermore, complexation of L1 with Cu(BF4)2·H2O and Zn(CF3SO3)2 provided a 2D → 3D interpenetrated network containing a classic dimeric copper paddle-wheel SBU, and an infinite 1D chain which extended into a 3D structure facilitated by hydrogen-bonding interactions, resp.

Dalton Transactions published new progress about Crystal structure. 93-60-7 belongs to class pyridine-derivatives, and the molecular formula is C7H7NO2, Related Products of 93-60-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Al-Busaidi, Idris Juma; Ilmi, Rashid; Zhang, Danyang; Dutra, Jose D. L.; Oliveira, Willyan F.; Al Rasbi, Nawal K.; Zhou, Liang; Wong, Wai-Yeung; Raithby, Paul R.; Khan, Muhammad S. published the artcile< Synthesis and photophysical properties of ternary β-diketonate europium(III) complexes incorporating bipyridine and its derivatives>, COA of Formula: C10H8N2, the main research area is trifluoromethyl phenyl butanedione phenylethynyl bromo bipyridine europium preparation photophys; ternary beta diketonate europium bipyridine preparation photophys photoluminescence.

Two new octa-coordinated ternary europium(III) complexes of the type [Eu(btfa)3(Br2-bpy)] (Eu-1) and [Eu(btfa)3(PhE2-bpy)] (Eu-2) (where btfa = 4,4,4-trifluoro-1-phenyl-1,3-butanedione, Br2-bpy = 5,5′-dibromo-2,2′-bipyridine, PhE2-bpy 5,5′-bis(phenylethynyl)-2,2′-bipyridine) together with a previously reported complex [Eu(btfa)3(bpy)] (Eu-3) have been synthesized. The complexes have been characterized by anal. and spectroscopic methods. The photophys. properties of the complexes have also been analyzed both exptl. and theor. The contribution of each ligand to the sensitized Eu(III) photoluminescence (PL) has been analyzed and is discussed. An energy transfer (ET) mechanism is proposed and discussed for the sensitized Eu(III) emission using exptl. and theor. data. The Eu(III) complex incorporating the parent bpy showed impressive performance as a double-emitting layer (EML) red organic light emitting diodes (R-OLEDs).

Dyes and Pigments published new progress about Crystal structure. 366-18-7 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2, COA of Formula: C10H8N2.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Conejos-Sanchez, I.; Gallon, E.; Nino-Pariente, A.; Smith, J. A.; De la Fuente, A. G.; Di Canio, L.; Pluchino, S.; Franklin, R. J. M.; Vicent, M. J. published the artcile< Polyornithine-based polyplexes to boost effective gene silencing in CNS disorders>, Related Products of 2127-03-9, the main research area is polyornithine siRNA polyplex central nervous system disorder.

Gene silencing therapies have successfully suppressed the translation of target proteins, a strategy that holds great promise for the treatment of central nervous system (CNS) disorders. Advances in the current knowledge on multimol. delivery vehicles are concentrated on overcoming the difficulties in delivery of small interfering (si)RNA to target tissues, which include anatomical accessibility, slow diffusion, safety concerns, and the requirement for specific cell uptake within the unique environment of the CNS. The present work addressed these challenges through the implementation of polyornithine derivatives in the construction of polyplexes used as non-viral siRNA delivery vectors. Physicochem. and biol. characterization revealed biodegradability and biocompatibility of our polyornithine-based system and the ability to silence gene expression in primary oligodendrocyte progenitor cells (OPCs) effectively. In summary, the well-defined properties and neurol. compatibility of this polypeptide-based platform highlight its potential utility in the treatment of CNS disorders.

Nanoscale published new progress about Biocompatibility. 2127-03-9 belongs to class pyridine-derivatives, and the molecular formula is C10H8N2S2, Related Products of 2127-03-9.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Serrano-Ruiz, Juan Carlos; Campelo, Juan M.; Francavilla, Matteo; Romero, Antonio A.; Luque, Rafael; Menendez-Vazquez, Carmen; Garcia, Ana B.; Garcia-Suarez, Eduardo J. published the artcile< Efficient microwave-assisted production of furfural from C5 sugars in aqueous media catalyzed by Broensted acidic ionic liquids>, SDS of cas: 21876-43-7, the main research area is ionic liquid xylose hydrolysis dehydration catalyst furfural microwave.

Small amounts of SO3H-functionalized room temperature synthesized ionic liquids efficiently dehydrate aqueous xylose to furfural under microwave heating at mild reaction conditions. The RT-ionic liquid catalysts were also found to be effective catalysts for the two step one-pot simultaneous hydrolysis and dehydration of a lignocellulosic waste biorefinery-derived syrup enriched in C5 sugar oligomers.

Catalysis Science & Technology published new progress about Bronsted acidity. 21876-43-7 belongs to class pyridine-derivatives, and the molecular formula is C9H13NO3S, SDS of cas: 21876-43-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Sanders, Georgine M.; Van Dijk, M.; Van der Plas, H. C. published the artcile< Reactions of haloquinolizinium bromides with diethylamine>, Recommanded Product: Methyl 3-bromo-2-pyridinecarboxylate, the main research area is quinolizinium bromide diethylamine reaction.

The reactions of quinolizinium bromide (QB) and its four monobromo derivatives with diethylamine have been investigated. For Br in position 2 or 4, substitution is the main process, whereas for Br in positions 1 and 3 quant. ring opening is found. The substituted pyridylbutadienes formed by ring opening, are cis-trans-butadienes, which isomerize into the all-trans forms. The steric course of the ring opening is explained.

Journal of Heterocyclic Chemistry published new progress about 53636-56-9. 53636-56-9 belongs to class pyridine-derivatives, and the molecular formula is C7H6BrNO2, Recommanded Product: Methyl 3-bromo-2-pyridinecarboxylate.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Keawkim, Kannika; Na Jom, Kriskamol published the artcile< Metabolomics and flavoromics analysis of chemical constituent changes during roasting of germinated Sacha inchi (Plukenetia volubilis L.)>, Related Products of 93-60-7, the main research area is metabolome flavorome roasting browning germination Plukenetia.

This study examined the changes in metabolites together with the flavor profiles of germinated Sacha inchi seeds during roasting by using gas chromatog. The results indicated that roasting partially increased the browning index, amino acid levels, total phenolic content, and antioxidant capacity, but slightly decreased the levels of reducing sugars. Oxidized and rancid compounds were significantly decreased at a 180 °C roasting temperature Pyrazine, furan, and pyrrole were Maillard reaction products that were increased at 180 °C of roasting. Roasting at 145 °C for 45 min after germination for 4 days was determined to be the optimal conditions for roasting germinated Sacha inchi seeds, which reduced the off-flavor and burned taste. The roasted germinated Sacha inchi seed contains higher amino acids than raw seed, which could be used as an alternative source for food products and supplements. In addition, the roasted germinated seeds at 4 days were recommended for food applications.

Food Chemistry: X published new progress about Alcohols Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 93-60-7 belongs to class pyridine-derivatives, and the molecular formula is C7H7NO2, Related Products of 93-60-7.

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem