6533b86cfe1ef96bd12c8c7b
RESEARCH PRODUCT
Inhibitors of inducible NO synthase expression: total synthesis of (S)-curvularin and its ring homologues.
Hartmut KleinertTimm AnkeHorst KunzStephan ElznerDieter SchollmeyerUlrich FörstermannGerhard ErkelDenise Schmidtsubject
Models MolecularDrug Evaluation PreclinicalNitric Oxide Synthase Type IICrystallography X-RayBiochemistryGene Expression Regulation EnzymologicCell LineLactonesEnosDrug DiscoveryHumansGeneral Pharmacology Toxicology and PharmaceuticsEnzyme InhibitorsCytotoxicityPromoter Regions GeneticOxidative decarboxylationPharmacologychemistry.chemical_classificationReporter genebiologyMolecular StructureChemistryOrganic ChemistryTotal synthesisStereoisomerismCurvularinTransfectionbiology.organism_classificationBiochemistryCyclizationMolecular MedicineZearalenoneLactoneHeLa Cellsdescription
(S)-Curvularin and its 13-, 14-, and 16-membered lactone homologues were synthesized through a uniform strategy in which a Kochi oxidative decarboxylation and ring-closing metathesis reactions constitute the key processes. In the evaluation of the anti-inflammatory effects of the synthesized compounds in assays using cells stably transfected with a human iNOS promoter-luciferase reporter gene construct, the 14- and 16-membered homologues showed a slightly higher inhibitory effect towards iNOS promoter activity than curvularin itself. However, the larger ring homologues also exhibited higher cytotoxicity, manifest in downregulated eNOS promoter activity. In contrast, the di-O-acetyl and 4-chloro derivatives of (S)-curvularin showed higher inhibitory efficiency towards induction of the iNOS promoter and less negative effect on eNOS promoter activity than curvularin.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-03-28 | ChemMedChem |