The present invention relates to preventives or remedies for Alzheimer's disease, or to amyloid protein fibril-formation inhibitors, which include as an active ingredient a compound of general formula (I) below or a pharmacologically permitted salt thereof; and also to nitrogen-containing heteroaryl derivatives having specific substituents, or pharmacologically permitted salts thereof, which are valuable as preventives or remedies for Alzheimer's disease, or as amyloid protein fibril-formation inhibitors:
(where, R
1
and R
2
are H or alkyl; Z
1
and Z
2
are H, alkyl, alkoxy, haloalkyl or halogeno; Z
3
is alkoxy, SH, alkylthio, NH
2
, mono- or di-alkylamino, OH or halogeno; Z
4
and Z
5
are H or halogeno; and A is 4,6-pyrimidine-1,3-diyl, 1,3,5-triazine-2,6-diyl, etc).
本发明涉及用于防治阿尔茨海默病的预防剂或治疗剂,或淀粉样蛋白纤维形成
抑制剂,其包括以下通式(I)的化合物或其药理学许可盐作为活性成分;以及具有特定取代基的含
氮杂芳基衍
生物,或其药理学许可盐,它们作为防治阿尔茨海默病的预防剂或治疗剂,或淀粉样蛋白纤维形成
抑制剂具有重要价值:(其中,R1和R2为H或烷基;Z1和Z2为H、烷基、烷
氧基、卤代烷基或卤素;Z3为烷
氧基、SH、烷
硫基、NH2、单烷基或二烷基
氨基、OH或卤素;Z4和Z5为H或卤素;A为4,6-
嘧啶-1,3-二基、
1,3,5-三嗪-
2,6-二基等)。