RESUMEN
In this Letter we describe the discovery of potent, selective, and orally active aminopurine JNK inhibitors. Improving the physico-chemical properties as well as increasing the potency and selectivity of a subseries with rat plasma exposure, led to the identification of four structurally diverse inhibitors. Differentiation based on PK profiles in multiple species as well as activity in a chronic efficacy model led to the identification of 1 (CC-930) as a development candidate, which is currently in Phase II clinical trial for IPF.
Asunto(s)
Ciclohexanoles/química , Ciclohexanoles/farmacología , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/farmacología , MAP Quinasa Quinasa 4/antagonistas & inhibidores , Purinas/química , Purinas/farmacología , Administración Oral , Animales , Dominio Catalítico , Ciclohexanoles/administración & dosificación , Perros , Activación Enzimática/efectos de los fármacos , Inhibidores Enzimáticos/administración & dosificación , Haplorrinos , Fibrosis Pulmonar Idiopática/tratamiento farmacológico , Concentración 50 Inhibidora , Modelos Moleculares , Estructura Molecular , Purinas/administración & dosificación , Ratas , Relación Estructura-ActividadRESUMEN
In this Letter we describe the optimization of an aminopurine lead (1) with modest potency and poor overall kinase selectivity which led to the identification of a series of potent, selective JNK inhibitors. Improvement in kinase selectivity was enabled by introduction of an aliphatic side chain at the C-2 position. CC-359 (2) was selected as a potential clinical candidate for diseases manifested by ischemia reperfusion injury.