ABSTRACT
A series of butynyloxyphenyl beta-sulfone piperidine hydroxamate TACE inhibitors was designed and synthesized. The resulting structure-activity relationship and MMP selectivity of the series were examined. Of the compounds investigated, 17s has excellent in vitro potency against isolated TACE enzyme, shows good selectivity over MMP-1, -2, -7, -8, -9, -13, and -14, and oral activity in an in vivo mouse model of TNF-alpha production.
Subject(s)
ADAM Proteins/antagonists & inhibitors , Piperidines/chemical synthesis , Piperidines/pharmacology , ADAM17 Protein , Animals , Drug Design , Mice , Piperidines/chemistry , Structure-Activity RelationshipABSTRACT
A series of benzodiazepine MMP/TACE inhibitors bearing polar moieties has been synthesized in an effort to optimize inhibitory activity against LPS-stimulated TNF production in human monocytes and oral activity in a murine LPS model.
Subject(s)
Benzodiazepines/pharmacology , Enzyme Inhibitors/pharmacology , Matrix Metalloproteinase Inhibitors , Metalloendopeptidases/antagonists & inhibitors , ADAM Proteins , ADAM17 Protein , Animals , Cell Line , Enzyme Inhibitors/pharmacokinetics , Humans , Lipopolysaccharides/pharmacology , Mice , Mice, Inbred BALB C , Monocytes/drug effects , Monocytes/metabolism , Mouth/drug effects , Tumor Necrosis Factor-alpha/antagonists & inhibitors , Tumor Necrosis Factor-alpha/biosynthesisABSTRACT
The matrix metalloproteinases (MMPs) are a family of zinc-containing endopeptidases that play a key role in both physiological and pathological tissue degradation. In our preceding paper, we have reported on a series of novel and orally active N-hydroxy-alpha-phenylsulfonylacetamide derivatives. However, these compounds had two drawbacks (moderate selectivity and chirality issues). To circumvent these two problems, a series of novel and orally active N-substituted 4-benzenesulfonylpiperidine-4-carboxylic acid hydroxyamide derivatives have been synthesized. The present paper deals with the synthesis and SAR of these compounds. Among the several compounds synthesized, derivative 55 turned out to be a potent, selective, and an orally active MMP inhibitor in the clinically relevant advanced rabbit osteoarthritis model. Detailed pharmacokinetics and metabolism data are described.
Subject(s)
Hydroxamic Acids/chemical synthesis , Matrix Metalloproteinase Inhibitors , Osteoarthritis/drug therapy , Piperidines/chemical synthesis , Protease Inhibitors/chemical synthesis , Sulfones/chemical synthesis , ADAM Proteins , ADAM17 Protein , Administration, Oral , Animals , Binding Sites , Biological Assay , Cartilage/drug effects , Cartilage/enzymology , Cattle , Crystallography, X-Ray , Dialysis , Dogs , Haplorhini , Humans , Hydroxamic Acids/pharmacokinetics , Hydroxamic Acids/pharmacology , Male , Matrix Metalloproteinase 13 , Matrix Metalloproteinases/chemistry , Metalloendopeptidases/antagonists & inhibitors , Mice , Models, Molecular , Piperidines/pharmacokinetics , Piperidines/pharmacology , Protease Inhibitors/pharmacokinetics , Protease Inhibitors/pharmacology , Rabbits , Rats , Structure-Activity Relationship , Sulfones/pharmacokinetics , Sulfones/pharmacologyABSTRACT
Sulfonamide hydroxamate derivatives of anthranilic acids are known to be potent inhibitors of cell-free TACE enzyme. However, compounds of this structural class with both high potency and high selectivity for TACE over matrix metalloproteinases (MMPs) are uncommon. Replacement of the sulfonamide functionality with an isosteric sulfonate ester has resulted in a series of sulfonate ester hydroxamates, 2a-e, with excellent activity against TACE and excellent selectivity over MMP-1 and MMP-13. Although compounds 2a-e possess good permeability in a PAMPA assay, they are only weakly active as inhibitors of lipopolysaccharide (LPS)-stimulated tumor necrosis factor (TNF) production in human monocytic THP-1 cells. Protein binding affinity also does not predict the lack of cellular activity for these analogs.
