RESUMO
Nonpeptidic, selective, and potent cathepsin S inhibitors were derived from an in-house pyrrolopyrimidine cathepsin K inhibitor by modification of the P2 and P3 moieties. The pyrrolopyrimidine-based inhibitors show nanomolar inhibition of cathepsin S with over 100-fold selectivity against other cysteine proteases, including cathepsin K and L. Some of the inhibitors showed cellular activities in mouse splenocytes as well as oral bioavailabilities in rats.
Assuntos
Catepsinas/antagonistas & inibidores , Cisteína Endopeptidases/síntese química , Inibidores de Cisteína Proteinase/síntese química , Disponibilidade Biológica , Catepsina K , Catepsina L , Catepsinas/química , Química Farmacêutica , Cisteína Endopeptidases/química , Inibidores de Cisteína Proteinase/farmacologia , Desenho de Fármacos , Humanos , Concentração Inibidora 50 , Modelos Químicos , Conformação Molecular , Estrutura Molecular , Piridinas/química , Relação Estrutura-AtividadeRESUMO
Cyano pyrimidine acetylene and cyano pyrimidine t-amine, which belong to a new chemical class, were prepared and tested for inhibitory activities against cathepsin K and the highly homologous cathepsins L and S. The use of novel chemotypes in the development of cathepsin K inhibitors has been demonstrated by derivatives of compounds 1 and 8.
Assuntos
Catepsinas/antagonistas & inibidores , Catepsinas/metabolismo , Inibidores Enzimáticos/síntese química , Inibidores Enzimáticos/farmacologia , Sítios de Ligação , Catepsina K , Catepsina L , Catepsinas/química , Cisteína Endopeptidases/metabolismo , Desenho de Fármacos , Inibidores Enzimáticos/química , Humanos , Modelos Moleculares , Estrutura Molecular , Relação Estrutura-AtividadeRESUMO
Pyrrolopyrimidine, a novel scaffold, allows to adjust interactions within the S3 subsite of cathepsin K. The core intermediate 10 facilitated the P3 optimization and identified highly potent and selective cathepsin K inhibitors 11-20.
