Novel Tricyclic compound represented by formula ##STR1## possess a TXA.sub.2 biosynthesis inhibiting act and/or a TXA.sub.2 receptor antagonizing activity, and are expected to have preventive and therapeutic effects on ischemic diseases, cerebro-vascular diseases, etc.
新型
三环化合物的
化学式为##STR1##,具有TXA.sub.2
生物合成抑制和/或TXA.sub.2受体拮抗活性,预期具有预防和治疗缺血性疾病、脑血管疾病等方面的作用。