Pyridine-derivatives

Authors Huber, I; Zupko, I; Gyovai, A; Horvath, P; Kiss, E; Gulyas-Fekete, G; Schmidt, J; Perjesi, P in SPRINGER published article about CIRCULAR-DICHROISM; CURCUMIN; ANTITUMOR; TOXICITY; ANALOGS; 3,5-BIS(ARYLIDENE)-4-PIPERIDONES; CYTOTOXICITY; APOPTOSIS; DELIVERY; CELLS in [Huber, Imre; Perjesi, Pal] Univ Pecs, Dept Pharmaceut Chem, H-7624 Pecs, Hungary; [Zupko, Istvan; Gyovai, Andras] Univ Szeged, Dept Pharmacodynam & Biopharm, H-6720 Szeged, Hungary; [Horvath, Peter; Kiss, Eszter] Semmelweis Univ, Dept Pharmaceut Chem, H-1092 Budapest, Hungary; [Gulyas-Fekete, Gergely; Schmidt, Janos] Univ Pecs, Dept Biochem & Med Chem, H-7624 Pecs, Hungary in 2019.0, Cited 50.0. HPLC of Formula: C6H5NO. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1

A new series (6) of C-5-curcuminoid derivatives (2E,6E-2,6-dibenzylidene-4-hydroxycyclohexanones) is described here with their evaluation for in vitro antiproliferative activities. Evaluation of 31 compounds against human A2780 (ovarian), C33A (cervix) and MDA-MB-231 (breast) cancer cell lines was performed to obtain structure activity relation data. The best performer was (2E,6E)-2,6-bis(3 ‘-nitrobenzylidene)-4-hydroxycyclohexanone (6h) with IC50 values of 0.68 mu M (A2780), 0.69 mu M (C33A) and 0.92 mu M (MDA-MB-231) compared to cisplatin with 1.30 mu M, 3.69 mu M and 19.13 mu M, respectively. According to calculated physicochemical properties some members in series 6, namely (2E,6E)-2,6-bis[(4 ‘-pyridinyl)methylene]-4-hydroxycyclohexanone (6p) [IC50 = 0.76 mu M (A2780), 2.69 mu M (C33A), 1.28 mu M (MDA-MB-231)] seem to have improved bioavailability compared to curcumin. Selected members of series 6 were involved in circular dichroism spectroscopic measurements in order to determine their interaction with natural DNA. Based on these data, we conclude that these derivatives do not bind to DNA in vitro. A proposal is summarized based on mass spectrometric assessment for fingerprint analysis in biological research of such C-5-curcuminoids.

Welcome to talk about 500-22-1, If you have any questions, you can contact Huber, I; Zupko, I; Gyovai, A; Horvath, P; Kiss, E; Gulyas-Fekete, G; Schmidt, J; Perjesi, P or send Email.. HPLC of Formula: C6H5NO

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

An article Assessing the predictive response of a simple and sensitive blood-based biomarker between estrogen-negative solid tumors WOS:000613505100025 published article about EPITHELIAL OVARIAN CARCINOMAS; NITRIC-OXIDE SYNTHASE; HYDROXY-L-ARGININE; PROGNOSTIC VALUE; CANCER; EXPRESSION; RECEPTOR; MICROENVIRONMENT; THERAPIES; SURVIVAL in [Mohan, Srinidi; Patel, Seema; Barlow, David; Rojas, Augusto Cardenas] Univ New England, Coll Pharm, Dept Pharmaceut Sci, Portland, ME USA in 2020.0, Cited 28.0. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5. Product Details of 65-22-5

Purpose: We investigated Nw-hydroxy L-Arginine (NOHA) predictive response in serous ovarian carcinoma based on estrogen-hormone receptor expression status; and assessed the distinctive NOHA response between estrogen-receptor-negative (ER-) tumor subtypes of ovarian and breast cancer. Materials/methods: Three-dimensional (3D) spheroids models of ER- and estrogen-receptor-positive (ER+) from breast and ovarian tumor, cultured for 9 weeks, were assayed for cellular levels of inducible nitric oxide synthase (NOS2), nitric oxide (as total nitrite) and L-Arginine, and compared to NOHA in culture medium. Statistical difference was set at p < 0.01. Results: Nine-week in vitro studies showed a progressive NOHA reduction in culture medium by at least 0.4-0.8 fold, and 0.65-0.92 fold only in the ER-breast tumor and ER-ovarian tumor 3D spheroids, respectively; with increases in cellular NOS2 and nitric-oxide levels, by at least 1.0-2.45 fold in both ER-tumor subtype 3D spheroids (p < 0.01; n = 6). Within ER-subtypes, medium NOHA decreased by >= 38.9% in ovarian cancer over breast cancer 3D-spheroids, with cellular increases in NOS2 (by >= 17.4%), and nitric oxide (by >= 18.8%). Cellular L-Arginine to medium NOHA ratio was higher, and by at least 6.5-22.5 fold in ER-breast tumor 3D-spheroids, and at least 10-70 fold in ER-ovarian tumor 3D spheroids, than in ER+ and control conditions; and was >= 48% higher in ER-ovarian cancer than in ER-breast cancer 3D-spheroids. Conclusions: The present study shows NOHA as a sensitive and selective indicator differentiating and distinguishing ER-subtypes based on the tumor grade.

Welcome to talk about 65-22-5, If you have any questions, you can contact Mohan, S; Patel, S; Barlow, D; Rojas, AC or send Email.. Product Details of 65-22-5

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Authors Zeng, RL; Deng, JY; Dang, LM; Yu, XL in NATURE RESEARCH published article about PREDICTION; MOLECULES in [Zeng, Ruolan; Deng, Jiyong; Dang, Limin; Yu, Xinliang] Hunan Inst Engn, Hunan Prov Key Lab Environm Catalysis & Waste Reg, Coll Mat & Chem Engn, Xiangtan 411104, Hunan, Peoples R China in 2021, Cited 23. Application In Synthesis of Ethyl nicotinate. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6

A three-descriptor quantitative structure-activity/toxicity relationship (QSAR/QSTR) model was developed for the skin permeability of a sufficiently large data set consisting of 274 compounds, by applying support vector machine (SVM) together with genetic algorithm. The optimal SVM model possesses the coefficient of determination R-2 of 0.946 and root mean square (rms) error of 0.253 for the training set of 139 compounds; and a R-2 of 0.872 and rms of 0.302 for the test set of 135 compounds. Compared with other models reported in the literature, our SVM model shows better statistical performance in a model that deals with more samples in the test set. Therefore, applying a SVM algorithm to develop a nonlinear QSAR model for skin permeability was achieved.

Application In Synthesis of Ethyl nicotinate. Welcome to talk about 614-18-6, If you have any questions, you can contact Zeng, RL; Deng, JY; Dang, LM; Yu, XL or send Email.

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Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

I found the field of Pharmacology & Pharmacy very interesting. Saw the article Potent Thiophene Antagonists of Human Complement C3a Receptor with Anti-Inflammatory Activity published in 2020.0. Recommanded Product: Phenyl(pyridin-2-yl)methanone, Reprint Addresses Reid, RC; Fairlie, DP (corresponding author), Univ Queensland, Inst Mol Biosci, Div Chem & Struct Biol, Brisbane, Qld 4072, Australia.; Reid, RC; Fairlie, DP (corresponding author), Univ Queensland, Inst Mol Biosci, Australian Res Council, Ctr Excellence Adv Mol Imaging, Brisbane, Qld 4072, Australia.; Reid, RC; Fairlie, DP (corresponding author), Univ Queensland, Inst Mol Biosci, Ctr Inflammat & Dis Res, Brisbane, Qld 4072, Australia.. The CAS is 91-02-1. Through research, I have a further understanding and discovery of Phenyl(pyridin-2-yl)methanone

Structure-activity relationships for a series of small-molecule thiophenes resulted in potent and selective antagonism of human Complement C3a receptor. The compounds are about 100-fold more potent than the most reported antagonist SB290157. A new compound JR14a was among the most potent of the new antagonists in vitro, assessed by (a) inhibition of intracellular calcium release (IC50 10 nM) induced in human monocyte-derived macrophages by 100 nM C3a, (b) inhibition of beta-hexosaminidase secretion (IC50 8 nM) from human LAD2 mast cells degranulated by 100 nM C3a, and (c) selectivity for human C3aR over C5aR JR14a was metabolically stable in rat plasma and in rat liver microsomes and efficacious in rats when given orally to suppress rat paw inflammation, macrophage and mast cell activation, and histopathology induced by intraplantar paw administration of a C3aR agonist. Potent C3aR antagonists are now available for interrogating C3a receptor activation and suppressing C3aR-mediated inflammation in mammalian physiology and disease.

Recommanded Product: Phenyl(pyridin-2-yl)methanone. Welcome to talk about 91-02-1, If you have any questions, you can contact Rowley, JA; Reid, RC; Poon, EKY; Wu, KC; Lim, JX; Lohman, RJ; Hamidon, JK; Yau, MK; Halili, MA; Durek, T; Iyer, A; Fairlie, DP or send Email.

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Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Product Details of 91-02-1. In 2019.0 J ORGANOMET CHEM published article about STRUCTURAL-CHARACTERIZATION; BIOLOGICAL-ACTIVITY; CRYSTAL-STRUCTURES; METAL-COMPLEXES; DNA-BINDING; LIGANDS; IMIDAZOLIUM; PYRIDINE; ANTIBACTERIAL; CYTOTOXICITY in [Choo, Kar Bee; Lee, Sui Mae; Lee, Wai Leng; Cheow, Yuen Lin] Monash Univ Malaysia, Sch Sci, Jalan Lagoon Selatan, Bandar Sunway 47500, Selangor, Malaysia in 2019.0, Cited 74.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1.

A series of bidendate pyridine-functionalized metal N-heterocyclic carbene (NHC) complexes with various wingtip substituents (R = methyl, phenyl and tert-butyl) had been prepared from silver oxide-mediated transmetalation method. The basic backbone of the NHC ligands were prepared in two step-wise reactions: reduction of the commercially available 2-benzoylpyridine, followed by halogenation to yield 2-(chloro(phenyl) methyl) pyridine. Subsequent reactions with different imidazoles gave the desired imidazolium salts (or NHC precursors) with different R groups at the N wingtip (R = Me, Ph, t-Bu). Transmetalation of the imidazolium salts into platinum NHC complexes were achieved by using Ag2O mediated method with Pt(cod)Cl-2 as the transmetalating agent. On the other hand, nickel NHC complexes were obtained via one pot synthesis method with nickel chloride as the transmetalating agent and reflux in the presence of a base. Following recrystallisation, the molecular structure of Pt NHC complex (+/-)-5a had been successfully elucidated via single crystal X ray diffraction (XRD) analysis. The six-membered ring of the platinum NHC complexes adopted a boat conformation with the phenyl ring arranged at the axial position. Meanwhile, two unexpected nickel complexes, i.e. a simple nickel coordination complex and a nickelate complex, were obtained and studied using XRD. These Pt NHC complexes and unexpected Ni complexes were evaluated for their in vitro antimicrobial and anticancer activities against a panel of pathogenic microorganisms and three selected human cancer cell lines, including breast (MCF7), colon (HCT116) and oral (H103) cancer cells. Generally, the Pt NHC complexes displayed enhanced antimicrobial activities upon coordination to metals, as compared to the corresponding imidazolium salts i.e. NHC precursors, with minimum inhibitory concentration (MIC) values in micromolar (mM) range. A couple of platinum NHC complexes synthesized exhibited antimicrobial activities with MIC as low as 2 mM, which are comparable to silver NHC complexes with renowned antimicrobial profiles. Similarly, upon coordination to the metals, the cytotoxic effects of the platinum NHC complexes increased significantly as compared to the imidazolium salts. Among all, platinum NHC complex (+/-)-5c displayed significant cytotoxicities towards the cancer cells with IC50 values that are two to three times lower than that of the anticancer drug cisplatin. In summary, evidences for influence of both wingtip substituents and metals on the biological activities of the complexes have been found. (C) 2019 Elsevier B.V. All rights reserved.

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Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

SDS of cas: 91-02-1. Recently I am researching about DEUTERIUM; ACTIVATION; HYDROGEN; TRITIATION; REDUCTION; CARBON; DRUG, Saw an article supported by the . Published in ROYAL SOC CHEMISTRY in CAMBRIDGE ,Authors: Nan, XL; Wang, Y; Li, XB; Tung, CH; Wu, LZ. The CAS is 91-02-1. Through research, I have a further understanding and discovery of Phenyl(pyridin-2-yl)methanone

Owing to the high synthetic value of deuteration in the pharmaceutical industry, we describe herein the conversion of a range of aromatic ketones to deuterium-labeled products in good to excellent yields. Efficient and site-selective deuteration of benzyl alcohols by D2O with visible light irradiation of quantum dots (QDs), together with gram-scale synthesis and photocatalyst recycling experiments indicated the potential of the developed method in practical organic synthesis.

Welcome to talk about 91-02-1, If you have any questions, you can contact Nan, XL; Wang, Y; Li, XB; Tung, CH; Wu, LZ or send Email.. SDS of cas: 91-02-1

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Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

An article Cobalt complexes containing salen-type pyridoxal ligand and DMSO for cycloaddition of carbon dioxide to propylene oxide WOS:000523754500006 published article about CYCLOHEXENE OXIDE; HIGHLY EFFICIENT; METAL-CATALYSTS; COPOLYMERIZATION; CO2; EPOXIDES in [Hwang, Saem; Ryu, Ji Yeon; Jung, Sung Hoo; Park, Hyoung-Ryun; Lee, Junseong] Chonnam Natl Univ, Dept Chem, 300 Yongbong Dong, Gwangju 500757, South Korea in 2020.0, Cited 33.0. Category: pyridine-derivatives. The Name is 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde hydrochloride. Through research, I have a further understanding and discovery of 65-22-5

Cobalt complexes containing a salen-type pyridoxal ligand with pyridine were synthesized as a new Co (III) catalytic system for the cycloaddition of carbon dioxide. Two cobalt(III) complexes possessing a salen-type pyridoxyl ligand were synthesized by the reaction of pyridoxal ligands (pyr(2)en = (N,N’-bis (pyridoxylideneiminato)ethylene) and pyr(2)cy = (N,N’-bis(pyridoxylideneiminato)cyclohexane)) and Co (OAc)(2) and characterized by various analytical methods, including infrared spectroscopy and high-resolution mass analysis. Single-crystal X-ray crystallography analysis confirmed that the cobalt pyr(2)en complex had a distorted octahedral structure: the tetradentate Schiff base ligand binds the cobalt metal in one plane, and the metal center adopts an octahedral geometry by the additional coordination of acetate and dimethyl sulfoxide. The synthesized complexes were used as catalysts in the cycloaddition of carbon dioxide (CO2) to propylene oxide. The catalysts showed high activity for cycloaddition between CO2 and epoxides, even at a low loading (0.5 mol%), in the presence of various cocatalysts. (C) 2020 Elsevier Ltd. All rights reserved.

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Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Category: pyridine-derivatives. Kyei-Baffour, K; Mohammad, H; Seleem, MN; Dai, MJ in [Kyei-Baffour, Kwaku; Dai, Mingji] Purdue Univ, Dept Chem, Ctr Canc Res, 720 Clinic Dr, W Lafayette, IN 47907 USA; [Kyei-Baffour, Kwaku; Dai, Mingji] Purdue Univ, Inst Drug Discovery, 720 Clinic Dr, W Lafayette, IN 47907 USA; [Mohammad, Haroon; Seleem, Mohamed N.] Purdue Univ, Dept Comparat Pathobiol, Coll Vet Med, 625 Harrison St, W Lafayette, IN 47907 USA; [Seleem, Mohamed N.; Dai, Mingji] Purdue Univ, Purdue Inst Inflammat Immunol & Infect Dis, 610 Purdue Mall, W Lafayette, IN 47907 USA published Second-generation aryl isonitrile compounds targeting multidrug-resistant Staphylococcus aureus in 2019.0, Cited 53.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

Antibiotic resistance remains a major global public health threat that requires sustained discovery of novel antibacterial agents with unexploited scaffolds. Structure-activity relationship of the first-generation aryl isonitrile compounds we synthesized led to an initial lead molecule that informed the synthesis of a second-generation of aryl isonitriles. From this new series of 20 compounds, three analogues inhibited growth of methicillin-resistant Staphylococcus aureus (MRSA) (from 1 to 4 mu M) and were safe to human keratinocytes. Compound 19, with an additional isonitrile group exhibited improved activity against MRSA compared to the first-generation lead compound. This compound emerged as a candidate worthy of further investigation and further reinforced the importance of the isonitrile functionality in the compounds’ anti-MRSA activity. In a murine skin wound model, 19 significantly reduced the burden of MRSA, similar to the antibiotic fusidic acid. In summary, 19 was identified as a new lead aryl isonitrile compound effective against MRSA.

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Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Computed Properties of C12H9NO. Kondo, Y; Kadota, T; Hirazawa, Y; Morisaki, K; Morimoto, H; Ohshima, T in [Kondo, Yuta; Kadota, Tetsuya; Hirazawa, Yoshinobu; Morisaki, Kazuhiro; Morimoto, Hiroyuki; Ohshima, Takashi] Kyushu Univ, Grad Sch Pharmaceut Sci, Higashi Ku, Maidashi 3-1-1, Fukuoka 8128582, Japan; [Morisaki, Kazuhiro] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan published Scandium(III) Triflate Catalyzed Direct Synthesis of N-Unprotected Ketimines in 2020.0, Cited 67.0. The Name is Phenyl(pyridin-2-yl)methanone. Through research, I have a further understanding and discovery of 91-02-1.

N-Unprotected ketimines are useful substrates and intermediates for synthesizing valuable nitrogen-containing compounds, but their potential applicability is limited by the available synthetic methods. To address this issue, we report a scandium(III) triflate catalyzed direct synthesis of N-unprotected ketimines. Using commercially available reagents and Lewis acid catalysts, ketones were directly transformed into the corresponding N-unprotected ketimines in high yields with broad functional group tolerance, even in multigram scales. The reactions were readily applicable for one-pot synthesis of important compounds such as a glycine Schiff base without isolation of N-unprotected ketimine intermediates. Preliminary mechanistic studies to clarify the reaction mechanism are also described.

Computed Properties of C12H9NO. Welcome to talk about 91-02-1, If you have any questions, you can contact Kondo, Y; Kadota, T; Hirazawa, Y; Morisaki, K; Morimoto, H; Ohshima, T or send Email.

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Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

In 2021 CHEM SCI published article about C-H BONDS; CROSS-COUPLING REACTIONS; GRIGNARD-REAGENTS; ENANTIOSELECTIVE FUNCTIONALIZATION; ALKYLIDENE DIHYDROPYRIDINES; REGIOSELECTIVE ADDITION; ARYL HALIDES; ALPHA; PYRIDINES; AZAARENES in [Wasfy, Nour; Rasheed, Faizan; Hunter, Isabelle; Shi, Jiaqi; Doan, Brian; Orellana, Arturo] York Univ, Dept Chem, 4700 Keele St, N York, ON M3J 1P3, Canada; [Robidas, Raphael; Legault, Claude Y.] Univ Sherbrooke, Dept Chem, Ctr Green Chem & Catalysis, 2500 Blvd Univ, Sherbrooke, PQ J1K 2R1, Canada; [Fishlock, Dan] F Hoffmann La Roche Ltd, Proc Chem & Catalysis, Synthet Mol Tech Dev, CH-4070 Basel, Switzerland in 2021, Cited 69. The Name is Ethyl nicotinate. Through research, I have a further understanding and discovery of 614-18-6. Quality Control of Ethyl nicotinate

We report a mild palladium-catalyzed method for the selective allylation of 4-alkylpyridines in which highly basic pyridylic anions behave as soft nucleophiles. This method exploits alkylidene dihydropyridines, which are semi-stable intermediates readily formed using a ‘soft-enolization’ approach, in a new mechanistic manifold for decarboxylative allylation. Notably, the catalytic generation of pyridylic anions results in a substantially broader functional group tolerance compared to other pyridine allylation methods. Experimental and theoretical mechanistic studies strongly suggest that pyridylic anions are indeed the active nucleophiles in these reactions, and that they participate in an outer-sphere reductive elimination step. This finding establishes a new pK(a) boundary of 35 for soft nucleophiles in transition metal-catalyzed allylations.

Quality Control of Ethyl nicotinate. Welcome to talk about 614-18-6, If you have any questions, you can contact Wasfy, N; Rasheed, F; Robidas, R; Hunter, I; Shi, JQ; Doan, B; Legault, CY; Fishlock, D; Orellana, A or send Email.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem