PROBLEM TO BE SOLVED: To provide a new bis(styryl)pyrimidine derivative compound and a new bis(styryl)benzene derivative compound, and a pharmacologically acceptable salt thereof.SOLUTION: The bis(styryl)pyrimidine derivative and the bis(styryl)benzene derivative are represented by chemical formula 1. A pharmacologically acceptable salt thereof, a production method thereof, and a preventive or therapeutic medicinal composition for a &beta amyloid-accumulation-related disease comprising the same as an effective ingredient are also provided. The derivative compound of chemical formula 1 inhibits &beta amyloid-accumulation to decrease the toxicity of the &beta amyloid to exhibit effects for improving deterioration in learning abilities and memory appearing in the &beta amyloid-accumulation-related disease.COPYRIGHT: (C)2010,JPO&INPIT【課題】新規なビス(スチリル)ピリミジン及びビス(スチリル)ベンゼン誘導体化合物、その薬学的に許容可能な塩の提供。【解決手段】下記の化学式1で表わされるビス(スチリル)ピリミジン及びビス(スチリル)ベンゼン誘導体、その薬学的に許容可能な塩、その製造方法及びそれを有効成分として含むβアミロイド集積関連疾患の予防または治療用医薬組成物。化学式1の誘導体化合物は、βアミロイド集積を阻害してβアミロイドの毒性を減少させ、βアミロイド集積関連疾患において現われる学習及び記憶力低下を改善させる効果を示す。【選択図】なし