The invention relates to pyrimidine derivatives and their pharmaceutically acceptable salts which are useful in the treatment of cerebrovascular diseases, to processes for preparation thereof and to the composition containing the same, said pyrimidine derivatives being represented by the following formula: ##STR1## wherein Ar, R.sup.1, R.sup.2 and R.sup.3 are as defined in the disclosure.
该发明涉及
嘧啶衍
生物及其药用盐,用于治疗脑血管疾病,以及其制备方法和含有这些化合物的组合物。所述
嘧啶衍
生物由以下公式表示:##STR1##其中Ar、R.sup.1、R.sup.2和R.sup.3如所述披露中定义。