申请人:——
公开号:US20030176449A1
公开(公告)日:2003-09-18
A class of 3-phenylimidazo(1,2-&agr;) 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; R
1
represents hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano trifluoromethyl, nitro, —OR
a
, —SR
a
, —SOR
a
, —SO
2
R
a
, —SO
2
NR
a
R
b
, —NR
a
R
b
, —NR
a
COR
b
, —NR
a
CO
2
R
b
, —COR
a
, CO
2
R
a
, —CONR
a
R
b
or —CR
a
═NOR
b
; and R
a
and R
b
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 GABA
A
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.
1
一类3-苯基咪唑并(1,2-a)嘧啶衍生物(公式I中的盐或前药:I),其中Y代表化学键,氧原子或-NH-键;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,氰基,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,取代苯环的meta位,由氧原子或-NH-键直接连接或桥接的可选取代的芳基或杂芳基基团,是GABAA受体的选择性配体,特别是对其中的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。