Substituted purinyl-pyrazole derivatives and their use as potassium channel modulators
申请人:Neurosearch A/S
公开号:US08268838B2
公开(公告)日:2012-09-18
Provided are substituted purinyl-pyrazol derivatives of the following formula (I), or a pharmaceutically acceptable salt thereof, and their use as potassium channel modulating agents, as well as pharmaceutical compositions having such derivatives that are useful for the treatment or alleviation of diseases or disorders associated with the activity of potassium channels:
wherein R1 represents hydrogen or alkyl; one of R2, R3 and R4 represents alkyl, hydroxy-alkyl, alkoxy-alkyl, halo, trifluoromethyl, trifluoromethoxy, hydroxy or alkoxy; and the other two of R2, R3 and R4, independently of each other, represent hydrogen, alkyl, hydroxy-alkyl, alkoxy-alkyl, halo, trifluoromethyl, trifluoromethoxy, hydroxy or alkoxy; R5 represents phenyl optionally substituted with one or more substituents selected from the group consisting of alkyl, halo, trifluoromethyl, trifluoromethoxy, alkoxy and cyano; and R6 represents R′OC(═O)—, wherein R′ represents alkyl, alkoxy, alkoxy-alkyl or adamantanyl.
提供的是以下式(I)的取代嘌呤基-吡唑衍生物,或其药学上可接受的盐,以及它们作为钾通道调节剂的用途,以及具有这些衍生物的药物组合物,它们有用于治疗或缓解与钾通道活性相关的疾病或障碍:
其中,R1代表氢或烷基;R2、R3和R4中的一个代表烷基、羟基烷基、烷氧基烷基、卤素、三氟甲基、三氟甲氧基、羟基或烷氧基;而R2、R3和R4中的另外两个,独立于彼此,分别代表氢、烷基、羟基烷基、烷氧基烷基、卤素、三氟甲基、三氟甲氧基、羟基或烷氧基;R5代表苯基,可选地取代一个或多个取代基,所述取代基选自烷基、卤素、三氟甲基、三氟甲氧基、烷氧基和氰基的群;而R6代表R'OC(═O)——,其中R'代表烷基、烷氧基、烷氧基烷基或金刚烷基。