Search results for " Oxazoles"

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Pyrrolo[2',3':3,4]cyclohepta[1,2-d][1,2]oxazoles, a New Class of Antimitotic Agents Active against Multiple Malignant Cell Types

2020

A new class of pyrrolo[2',3':3,4]cyclohepta[1,2-d][1,2]oxazoles was synthesized for the treatment of hyperproliferative pathologies, including neoplasms. The new compounds were screened in the 60 human cancer cell lines of the NCI drug screen and showed potent activity with GI50 values reaching the nanomolar level, with mean graph midpoints of 0.08-0.41 μM. All compounds were further tested on six lymphoma cell lines, and eight showed potent growth inhibitory effects with IC50 values lower than 500 nM. Mechanism of action studies showed the ability of the new [1,2]oxazoles to arrest cells in the G2/M phase in a concentration dependent manner and to induce apoptosis through the mitochondrial…

CellsMitosisAntineoplastic AgentsApoptosisAntimitotic AgentsDrug Screening Assays[12]oxazoles antimitotic agents lymphoma tubulin polymerization inhibitorsDose-Response RelationshipStructure-Activity Relationshipchemistry.chemical_compoundModelsDrug DiscoverymedicineHumansStructure–activity relationshipColchicineOxazolesAntimitotic Agents; Antineoplastic Agents; Apoptosis; Cell Proliferation; Cells Cultured; Dose-Response Relationship Drug; Drug Screening Assays Antitumor; G2 Phase Cell Cycle Checkpoints; HeLa Cells; Humans; Mitosis; Models Molecular; Molecular Structure; Oxazoles; Structure-Activity RelationshipCell Proliferationchemistry.chemical_classificationReactive oxygen speciesCulturedMolecular StructureChemistryMolecularDepolarizationAntitumorMolecular biologyG2 Phase Cell Cycle CheckpointsMechanism of actionApoptosisCell cultureMolecular MedicineAntimitotic AgentDrugmedicine.symptomHeLa Cells
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Optimization of anti-proliferative activity using a screening approach with a series of bis-heterocyclic G-quadruplex ligands

2013

Abstract Using a phenotypic screening and SAR optimization approach, a phenyl-bis-oxazole derivative has been identified with anti-proliferative activity, optimized with the use of a panel of cancer cell lines. The lead compound was synthesized by means of a short and effective two-step synthesis using Pd-catalyzed direct arylation. The compound stabilizes several quadruplex DNA sequences including a human telomeric DNA and one from the promoter of the HSP90 gene, although the structure–activity relationships of the series are not obviously related to the quadruplex binding.

Phenotypic screeningClinical BiochemistryPharmaceutical ScienceG-quadruplexLigandsBiochemistrychemistry.chemical_compoundInhibitory Concentration 50Structure-Activity RelationshipHeterocyclic CompoundsCell Line TumorDrug DiscoveryHumansMolecular BiologyGeneCell ProliferationOrganic ChemistryCombinatorial chemistrySmall moleculeSettore CHIM/08 - Chimica FarmaceuticaG-QuadruplexeschemistryMolecular MedicineHuman genomeQuadruplex Anti-proliferative Phenotypic screening Telomerase OxazolesDrug Screening Assays AntitumorLead compoundDerivative (chemistry)DNA
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