申请人:Takeda Chemical Industries, Ltd.
公开号:US04736031A1
公开(公告)日:1988-04-05
Novel condensed seven-membered heterocyclic compounds of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen, halogen, hydroxy, lower alkyl or lower alkoxy, R.sub.3 and R.sub.4 are independently hydrogen, optionally substituted lower alkyl, optionally substituted cycloalkyl or optionally substituted aralkyl, or both jointly form an optionally substituted ring together with the adjacent nitrogen atom, X is hydrogen, optionally substituted lower alkyl, optionally substituted aryl or a carboxyl group which may be esterified or amidated, Y is >C.dbd.O or >CH--OR.sub.5 in which R.sub.5 is hydrogen, acyl or optionally substituted carbamoyl, A is oxygen atom or sulfur atom, E is oxygen atom or methylene, and G is lower alkylene, provided that when A is sulfur atom, E is methylene, and salts thereof exhibit serotonin S.sub.2 receptor blocking activity, actions to relieve cerebral vasospasm and antithrombotic activity, and are of value as a prophylactic and therapeutic agent for ischemic cardiopathies, thrombosis, hypertension and cerebral circulatory disorders.
本发明涉及一种化合物,其为七元
杂环化合物,
化学式为:##
STR1## 其中R.sub.1和R.sub.2分别为
氢、卤素、羟基、低
碳基或低烷
氧基;R.sub.3和R.sub.4分别为
氢、可选取代的低
碳基、可选取代的
环烷基或可选取代的芳基烷基;或者两者共同形成一个可选取代的环,与相邻的
氮原子一起;X为
氢、可选取代的低
碳基、可选取代的芳基或可
酯化或
酰胺化的羧基;Y为>C.dbd.O或>CH--OR.sub.5,其中R.sub.5为
氢、酰基或可选取代的
氨基甲酰基;A为
氧原子或
硫原子;E为
氧原子或亚
甲基;G为低
碳基亚烷基。当A为
硫原子时,E为亚
甲基。该化合物的盐表现出5-羟
色胺S.sub.2受体阻断活性,缓解脑血管痉挛和抗血栓活性,可作为缺血性心脏病、血栓形成、高血压和脑循环障碍的预防和治疗剂。