Search results for "Dihydropyridines"

showing 3 items of 23 documents

Distinct effects of atypical 1,4-dihydropyridines on 1-methyl-4-phenylpyridinium-induced toxicity.

2006

Our previous data obtained from in vivo experiments demonstrated high neuroprotective effects of three novel atypical neuronal non-calcium antagonistic 1,4-dihydropyridine (DHP) derivatives cerebrocrast, glutapyrone and tauropyrone. The present studies were carried out in vitro to clarify, at least in part, their mechanism of action in primary culture of cerebellar granule cells by use of 1-methyl-4-phenylpyridinium (MPP+) as a neurotoxic agent which causes dramatic oxidative stress. Cerebrocrast (highly lipophilic, with a classical two-ring structure) dose-dependently (0.01-10.0 microM, EC50 = 13 nM) reduced MPP+-induced cell death. At the same time, the calcium antagonist nimodipine (refe…

Membrane potentialNeurons1-Methyl-4-phenylpyridiniumDihydropyridinesCell DeathMolecular Structure1-Methyl-4-phenylpyridiniumClinical BiochemistryCell BiologyGeneral MedicineMitochondrionPharmacologyBiologymedicine.disease_causeBiochemistryNeuroprotectionMechanism of actionmedicinemedicine.symptomMode of actionReactive Oxygen SpeciesOxidative stressIntracellularCells CulturedCell biochemistry and function
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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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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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