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
生物及其药学上可接受的盐,其在治疗脑血管疾病方面有用,以及其制备过程和含有它们的组合物,所述
嘧啶衍
生物由以下公式表示:
##STR1##
其中Ar,R1,R2和R3如本文所定义。