Compounds of formula I or a stereoisomer or pharmaceutically-acceptable salt thereof, are useful in the modulation of IL-12, IL-23 and/or IFNa, by acting on Tyk-2 to cause signal transduction inhibition. The compounds of formula I are useful for the treatment of inflammatory or autoimmune diseases.
式 I 的化合物或其立体异构体或药学上可接受的盐通过作用于 Tyk-2 导致
信号转导抑制,可用于调节 IL-12、I
L-23 和/或 IFNa。式 I 化合物可用于治疗炎症或自身免疫性疾病。