This invention provides novel 5-HT.sub.1F agonists of Formula I ##STR1## where A--B, R, R.sup.1 and X are as defined in the specification, which are useful for the treatment of migraine and associated disorders.
该发明提供了一种新型的5-HT.sub.1F激动剂,其
化学式为I ##STR1## 其中A-B、R、R.sup.1和X如规范中所定义,可用于治疗偏头痛及相关疾病。