This invention is to provide quinazolinone derivatives, and their acid salts and quaternary ammonium salts, having an effect of preventing or treating diseases caused by calcium ion overload in cells, such as ischemic heart disease, ischemic cerebral disease and ischemic renal disease, and their usage. The quinazolinone derivatives are represented by the formula: ##STR1## typically, T represents an oxygen atom; Y represents a phenyl or cyclohexyl group; R.sup.1 represents a hydrogen or chlorine atom; R.sup.2 represents a hydrogen atom; ring W represents a benzene or pyridine ring; Z represents a group of the formula: ##STR2##
这项发明提供了
喹唑啉酮衍
生物及其酸盐和季
铵盐,具有预防或治疗由细胞内
钙离子超载引起的疾病的作用,如缺血性心脏病、缺血性脑病和缺血性肾病,以及它们的用途。
喹唑啉酮衍
生物由以下公式表示:##STR1##通常,T代表氧原子;Y代表苯基或环己基;R.sup.1代表氢原子或
氯原子;R.sup.2代表氢原子;环W代表苯环或
吡啶环;Z代表以下式的基团:##STR2##