Search results for "Dihydropyridine"

The use of domino and multicomponent reactions in asymmetric synthesis is constantly increasing nowadays. This allows for the synthesis of complex molecules in a single synthetic sequence, usually with high atom economy. Herein, we report three examples of new asymmetric tandem reactions recently developed in our laboratories, giving rise to new families of enantiomerically enriched fluorinated and nonfluorinated heterocycles. Thus, 1,4-dihydropyridines (1,4-DHPs) bearing fluorinated substituents at C6 were assembled by means of a Hantzsch-type reaction; cyclic β-amino carbonyl derivatives were prepared using a cross-metathesis (CM)–intramolecular aza-Michael sequence; while fluorinated ind…

TandemChemistryGeneral Chemical EngineeringEnantioselective synthesisSequence (biology)General Chemistrycyclic beta-amino carbonyl compoundElectrophilic aromatic substitutionCombinatorial chemistryDominoNucleophilefluorinated beta-amino acidsAtom economyMoleculeOrganic chemistrytandem reactionsfluorinated dihydropyridinefluorinated indolines

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Tandem asymmetric Michael reaction-intramolecular Michael addition. An easy entry to chiral fluorinated 1,4-dihydropyridines.

2010

A novel one-pot tandem asymmetric Hantzsch-type process has been employed to generate fluorinated 1,4-dihydropyridines (1,4-DHPs) as single diastereoisomers. It involves the condensation of (R)-(+)-allyl p-tolyl sulfoxide, fluorinated nitriles, and alkyl propiolates, giving access to a new family of enantiomerically pure fluorine-containing 1,4-DHPs.

chemistry.chemical_classificationModels MolecularDihydropyridinesTandemHydrocarbons FluorinatedMolecular StructureChemistryOrganic ChemistryDiastereomerSulfoxideStereoisomerismBiochemistryCombinatorial chemistryCatalysischemistry.chemical_compoundIntramolecular forceAlkynesMichael reactionOrganic chemistryCombinatorial Chemistry TechniquesPhysical and Theoretical ChemistryAlkylOrganic letters

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Interaction of antimutagenic 1,4-dihydropyridine AV-153-Na with DNA and DNA-damaging molecules and its impact on DNA repair activity

2017

1,4-dihydropyridines (1,4-DHP) possess important biochemical and pharmacological properties, including antioxidant and antimutagenic activities. Interaction of some 1,4-DHP with DNA was recently reported. AV-153-Na, an antimutagenic and DNA-repair-enhancing compound appeared to be able to interact with DNA by intercalation. The aim of the current study was to characterize DNA’s capacity for the binding of AV-153-Na, and using different approaches, to test intracellular distribution of the compound, to test the ability of the compound to scavenge peroxynitrite and hydroxyl radical and to assess the ability of the compound to modify the activity of DNA repair enzymes. The DNA binding activity…

chemistry.chemical_compoundDNA clampBiochemistryDNA repairChemistryDihydropyridinemedicineMoleculeDNA repair protein XRCC4Molecular biologyDNAmedicine.drugNucleotide excision repair

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DNA-binding studies of a series of novel water-soluble derivatives of 1,4-dihydropyridine

2018

Aim. to determine DNA interaction modes for a series of 1,4-dihydropyridines with different biological activities synthesized in the Latvian Institute of Or-ganic Synthesis. Methods. Affinity of the compounds to DNA was detected by UV/VIS spec-trometry and re-proofed by means of spectrofluorimetry, EBr extrusion assay, cyclic voltammetry and DNA melting. Radical scavenging was tested by electron paramagnetic resonance spectros-copy, peroxynitrite binding was monitored spectrophotometrically, protection of DNA against hydroxyl radical was determined by gel electrophoresis. Results. In a series of water-soluble monocyclic derivatives of 1,4-dihydropyridine with carboxylate groups in position-…

chemistry.chemical_compoundWater solubleSeries (mathematics)ChemistryBioorganic ChemistryDihydropyridinemedicineCombinatorial chemistryGeneral Biochemistry Genetics and Molecular BiologyDNAmedicine.drugBiopolymers and Cell

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Targeting the Mitochondria by Novel Adamantane-Containing 1,4-Dihydropyridine Compounds

2012

Linda Klimaviciusa1, Maria A. S. Fernandes2, Nelda Lencberga1, Marta Pavasare1, Joaquim A. F. Vicente2, Antonio J. M. Moreno2, Maria S. Santos3, Catarina R. Oliveira4, Imanta Bruvere5, Egils Bisenieks5, Brigita Vigante5 and Vija Klusa1 1Department of Pharmacology, Faculty of Medicine, University of Latvia, Riga 2IMAR-CMA, Department of Life Sciences, University of Coimbra, Coimbra 3CNC, Department of Life Sciences, University of Coimbra, Coimbra 4CNC, Faculty of Medicine, University of Coimbra, Coimbra 5Laboratory of Membrane Active and beta-Diketone Compounds, Latvian Institute of Organic Synthesis, Riga 2,3,4Portugal 1,5Latvia

chemistry.chemical_compoundchemistryAdamantanemedia_common.quotation_subjectDihydropyridinemedicineLibrary scienceArtmedia_commonmedicine.drug

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1,4 dihidropiridinski derivati povećavaju ekspresiju gena Psma3, Psmb5 i Psmc6 u glasničkoj RNA štakora

2021

The ubiquitin-proteasome system modifies different cellular and protein functions. Its dysregulation may lead to disrupted proteostasis associated with multiple pathologies and aging. Pharmacological regulation of proteasome functions is already an important part of the treatment of several diseases. 1,4-dihydropyridine (1,4-DHP) derivatives possess different pharmacological activities, including antiaging and neuroprotective. The aim of this study was to investigate the effects of several 1,4-DHP derivatives on mRNA expression levels of proteasomal genes Psma3, Psmb5, and Psmc6 in several organs of rats. Rats were treated with metcarbatone, etcarbatone, glutapyrone, styrylcarbatone, AV-153…

glutapironDihydropyridinesProteasome Endopeptidase Complexetcarbatoneporemećena proteasomska funkcijaimpaired proteasomal functionsproteasome subunitsToxicologyPSMA3metkarbatonKidneyNeuroprotectionPSMC6glutapyroneAV-153-NaAV-153-Ca; AV-153-Na; etcarbatone; gene expression; glutapyrone; impaired proteasomal functions; metcarbatone; pharmacological activities; proteasome subunits; styrylcarbatone; ubiquitin-proteasome systemAV-153-Ca; AV-153-Na; etkarbaton; glutapiron; metkarbaton; stirilkarbaton; poremećena proteasomska funkcija; proteasomske podjedinice; ubikvitin-proteasomski sustavGene expressionAnimalsstyrylcarbatoneRNA MessengerGeneChemistryPublic Health Environmental and Occupational HealthPSMB5Cell biologyproteasomske podjediniceRatsProteostasisProteasomeubikvitin-proteasomski sustavstirilkarbatongene expressionOriginal Articlepharmacological activitiesAV-153-Caubiquitin-proteasome systemmetcarbatoneetkarbatonArchives of Industrial Hygiene and Toxicology

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CCDC 993834: Experimental Crystal Structure Determination

2014

Related Article: Inguna Goba, Baiba Turovska, Sergey Belyakov, Edvards Liepinsh|2014|J.Mol.Struct.|1074|549|doi:10.1016/j.molstruc.2014.06.044

methyl 5-acetyl-26-dimethyl-4-phenyl-14-dihydropyridine-3-carboxylateSpace GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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