申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05496815A1
公开(公告)日:1996-03-05
Thiazine derivatives of the formula [I]: ##STR1## wherein R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are each hydrogen atom; R.sup.3 is hydrogen atom or a halogen atom; X is sulfur atom; R.sup.6 is naphthyl, a sulfur-containing monoheterocyclic group or a substituted phenyl; Z.sup.1 is two hydrogen atoms; Z.sup.2 is oxygen atom; A is a lower alkylene; R.sup.7 and R.sup.8 are the same or different and are each i) hydrogen atom, ii) a lower alkyl, iii) a lower alkenyl, iv) a lower alkynyl, or v) a lower alkyl which is substituted by a substituted phenyl, or both form together with the adjacent nitrogen atom a nitrogen-containing monoheterocyclic group; except for the compound [I] wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each hydrogen atom, X is sulfur atom, R.sup.6 is a halogenophenyl, Z.sup.1 is two hydrogen atoms, Z.sup.2 is oxygen atom, A is a lower alkylene, R.sup.7 and R.sup.8 are the same or different and each a lower alkyl; or a pharmaceutically acceptable salt thereof, which have calcium antagonistic activity within the cerebral tissues and are useful for prophylaxis and treatment of ischemic encephalopathia.
公式[I]的噻唑衍生物:##STR1## 其中,R.sup.1、R.sup.2、R.sup.4和R.sup.5均为氢原子;R.sup.3为氢原子或卤原子;X为硫原子;R.sup.6为萘基、含硫单杂环基团或取代的苯基;Z.sup.1为两个氢原子;Z.sup.2为氧原子;A为低碳链;R.sup.7和R.sup.8相同或不同,分别为i)氢原子,ii)低碳基,iii)低碳烯基,iv)低碳炔基,或v)被取代苯基取代的低碳基,或者与相邻氮原子一起形成含氮单杂环基团;但除了化合物[I],其中R.sup.1、R.sup.2、R.sup.3、R.sup.4和R.sup.5均为氢原子,X为硫原子,R.sup.6为卤代苯基,Z.sup.1为两个氢原子,Z.sup.2为氧原子,A为低碳链,R.sup.7和R.sup.8相同或不同,均为低碳基;或其药学上可接受的盐。这些化合物在脑组织内具有钙拮抗活性,并且可用于预防和治疗缺血性脑病。