Compounds having the following formula I:
or a stereoisomer or pharmaceutically-acceptable salt thereof, where R1, R2, R3, R4, and R5 are as defined herein, are useful in the modulation of IL-12, IL-23 and/or IFNα, by acting on Tyk-2 to cause signal transduction inhibition.
具有下式 I 的化合物
或其立体异构体或药学上可接受的盐,其中 R1、R2、R3、R4 和 R5 如本文所定义,通过作用于 Tyk-2,导致
信号转导抑制,可用于调节 I
L-12、I
L-23 和/或 IFNα。