申请人:Merck Sharp & Dohme Ltd.
公开号:US06642229B2
公开(公告)日:2003-11-04
A class of 3-phenylimidazo(1,2-a)pyrimidine derivatives (of Formula I, or salt or prodrug thereof: I) wherein Y represents a chemical bond, an oxygen atom, or a —NH— linkage; Z represents an optionally substituted aryl or heteroaryl group; R1 represents hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano trifluoromethyl, nitro, —ORa, —SRa, —SORa, —SO2Ra, —SO2NRaRb, —NRaRb, —NRaCORb, —NRaCO2Rb, —CORa, CO2Ra, —CONRaRb or —CRa═NORb; and Ra and Rb independently represent hydrogen, hydrocarbon or a heterocyclic group.), substituted at the meta position of the phenyl ring by an optionally substituted aryl or heteroaryl group which is directly attached or bridged by an oxygen atom or a —NH— linkage, are selective ligands for GABAA receptors, in particular having good affinity for the a2 and/or a3 and/or a5 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.
一类3-苯基咪唑并[1,2-a]嘧啶衍生物(化学式I,或其盐或前药:I),其中Y代表化学键,氧原子或—NH—连接;Z代表可选取代的芳基或杂芳基基团;R1代表氢、碳氢化合物、杂环基团、卤素、氰、三氟甲基、硝基、—ORa、—SRa、—SORa、—SO2Ra、—SO2NRaRb、—NRaRb、—NRaCORb、—NRaCO2Rb、—CORa、CO2Ra、—CONRaRb或—CRa═NORb;而Ra和Rb分别独立地代表氢、碳氢化合物或杂环基团。这些衍生物在苯环的间位上取代了可选取代的芳基或杂芳基基团,该基团直接连接或通过氧原子或—NH—连接桥接,是GABAA受体的选择性配体,特别是对a2和/或a3和/或a5亚单位具有良好的亲和力,因此对于治疗和/或预防中枢神经系统的不良症状,包括焦虑、惊厥和认知障碍,具有益处。