申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05246929A1
公开(公告)日:1993-09-21
Thiazine (or oxazine) derivatives of the formula [I]: ##STR1## wherein R.sup.1 and R.sup.2 are both H or form a naphthalene ring together with the benzene ring; R.sup.3 and R.sup.4 are both H, or one of them is halogen and another is H; X is S or O; R.sup.5 and R.sup.6 are each i) H, ii) lower alkyl, iii) cycloalkyl, iv) substituted phenyl, v) naphthyl, vi) lower alkyl which is substituted by substituted or unsubstituted phenyl, or vii) S-containing heterocyclic group; one of Z.sup.1 and Z.sup.2 is O and another is H.sub.2 ; A is lower alkylene; R.sup.7 and R.sup.8 are each i) H, ii) lower alkyl, iii) lower alkenyl, iv) lower alkynyl, or v) lower alkyl which is substituted by substituted or unsubstituted phenyl, or both form together N-containing heterocyclic group; provided that when both of R.sup.1 and R.sup.2 are H, Z.sup.2 is O and either one of R.sup.5 and R.sup.6 is substituted phenyl, naphthyl or S-containing heterocyclic group, or their salts, which have calcium antagonistic activity within the cerebral tissues and are useful for prophylaxis and treatment of ischemic encephalopathia and/or cerebral neurocyte dyscrasia, and process for preparing said compounds.
吡嗪(或噁嗪)衍生物的化学式[I]:其中R.sup.1和R.sup.2均为H或者与苯环一起形成一个萘环;R.sup.3和R.sup.4均为H,或其中一个为卤素,另一个为H;X为S或O;R.sup.5和R.sup.6分别为i)H,ii)较低烷基,iii)环烷基,iv)取代苯基,v)萘基,vi)受取代或未取代苯基取代的较低烷基,或者vii)含S的杂环基;Z.sup.1和Z.sup.2中的一个为O,另一个为H.sub.2;A为较低烷基;R.sup.7和R.sup.8分别为i)H,ii)较低烷基,iii)较低烯基,iv)较低炔基,或v)受取代或未取代苯基取代的较低烷基,或者两者一起形成含N的杂环基;但当R.sup.1和R.sup.2均为H时,Z.sup.2为O,且R.sup.5和R.sup.6中的任一者为取代苯基、萘基或含S的杂环基时,或它们的盐,具有对大脑组织内钙拮抗活性,并且适用于缺血性脑病和/或脑神经细胞异常的预防和治疗的化合物的制备方法。