RESUMEN
The trifluoromethylphenyl P2 motif from previously reported heteroarylnitrile series has been successfully applied for the design and synthesis of highly potent novel ketoamide-based cathepsin S inhibitors. The key in this process is the change of the torsion angle between the P2 phenyl ring and the attached secondary amide by adding a small Cl, F, or Me group at the 2-position.
Asunto(s)
Compuestos de Anilina/síntesis química , Catepsinas/antagonistas & inhibidores , Inhibidores de Cisteína Proteinasa/síntesis química , Amidas/síntesis química , Amidas/farmacología , Compuestos de Anilina/farmacología , Animales , Inhibidores de Cisteína Proteinasa/farmacología , Flúor , Humanos , Cetonas , Relación Estructura-ActividadRESUMEN
6-Phenyl-1H-imidazo[4,5-c]pyridine-4-carbonitrile analogues were identified as potent and selective cathepsin S inhibitor against both purified enzyme and in human JY cell based cellular assays. This core has a very stable thio-trapping nitrile war-head in comparison with the well reported pyrimidine-2-carbonitrile cysteine cathepsin inhibitors. Compound 47 is also very potent in in vivo mouse spleenic Lip10 accumulation assays.
Asunto(s)
Catepsinas/antagonistas & inhibidores , Nitrilos/química , Inhibidores de Proteasas/química , Piridinas/química , Animales , Sitios de Unión , Catepsinas/metabolismo , Línea Celular , Cristalografía por Rayos X , Humanos , Ratones , Nitrilos/síntesis química , Nitrilos/farmacocinética , Inhibidores de Proteasas/síntesis química , Inhibidores de Proteasas/farmacocinética , Piridinas/síntesis química , Piridinas/farmacocinética , Relación Estructura-ActividadRESUMEN
We describe the development of TMTH-SulfoxImine (TMTHSI) as a superior click reagent. This reagent combines a great reactivity, with small size and low hydrophobicity and compares outstandingly with existing click reagents. TMTHSI can be conveniently functionalized with a variety of linkers allowing attachment of a diversity of small molecules and (peptide, nucleic acid) biologics.