申请人:DAINIPPON PHARMACEUTICAL CO., LTD.
公开号:EP1010699A1
公开(公告)日:2000-06-21
A 5-substituted-3-oxadiazolyl-1,6-naphthyridin-2(1H)-one derivative of the formula (I):
wherein Het is oxadiazolyl, R1 is H, lower alkyl, cyclo-lower alkyl, trifluoromethyl, lower alkenyl, lower alkynyl, lower alkoxy, lower alkoxy-lower alkyl, hydroxy-lower alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaromatic group, and R2 is H, lower alkyl, cyclo-lower alkyl, cyclo-lower alkylmethyl, lower alkenyl, cyclo-lower alkenyl, lower alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaromatic group, or a pharmaceutically acceptable acid addition salt thereof, which has high selective affinity to benzodiazepine receptor and is useful particularly as a benzodiazepine inverse agonist, for example, as psychoanaleptic drug or a drug for the treatment of dysmnesia in senile dementia or Alzheimer's disease.
式(I)的 5-取代-3-噁二唑基-1,6-萘啶-2(1H)-酮衍生物:
其中 Het 为噁二唑基,R1 为 H、低级烷基、环低级烷基、三氟甲基、低级烯基、低级炔基、低级烷氧基、低级烷氧基低级烷基、羟基低级烷基、取代或未取代的芳基、或取代或未取代的杂芳基,R2 为 H、低级烷基、环低级烷基、环低级烷甲基、低级烯基、环低级烯基、低级炔基、取代或未取代的芳基、或取代或未取代的杂芳基、或取代或未取代的杂芳香族基团,或其药学上可接受的酸加成盐,对苯二氮卓受体具有高选择性亲和力,尤其可用作苯二氮卓反向激动剂,例如,用作精神药物或治疗老年痴呆症或阿尔茨海默氏症中失忆症的药物。