| 摘要 |
The present patent application discloses compounds having formula (I) or a pharmaceutically acceptable salt thereof wherein R<1> is hydrogen, alkyl or benzyl; X is O or NOR<2>, wherein R<2> is hydrogen, alkyl or benzyl; Y is N-R<4> wherein R<4> is hydrogen, OH or alkyl; n is 0 or 1; R<6> is phenyl, naphthyl, thienyl, pyridyl, all of which may be substituted one or more times with substituents selected from the group consisting of halogen; CF3, NO2, amino, alkyl, alkoxy and phenyl; A is a ring of five to seven atoms fused with the benzo ring at the positions marked a and b. The compounds are useful in the treatment of cerebrovascular disorders for example. |
