申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US05646308A1
公开(公告)日:1997-07-08
Benzopyran derivatives represented by formula (I): ##STR1## wherein X represents .dbd.O, .dbd.S, .dbd.N--Z, etc. (Z represents a lower alkyl group, etc.); Y represents a substituted amino group, an alkoxy group, an alkylthio group, etc., and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom, a lower alkyl group, etc, are disclosed. The benzopyran derivative exhibit K.sup.+ channel opening activities and are widely applicable as antiasthmatics, antiepileptics, and the like.
公式(I)所代表的苯并吡喃衍生物:其中X代表.dbd.O,.dbd.S,.dbd.N--Z等(Z代表较低的烷基基团等);Y代表取代氨基团,烷氧基团,烷基硫基团等;R.sub.1,R.sub.2,R.sub.3,R.sub.4和R.sub.5分别代表氢原子,较低的烷基基团等。这些苯并吡喃衍生物表现出K.sup.+通道开放活性,并广泛应用于抗哮喘药物,抗癫痫药物等。