Fused-ring heterocyclic compounds a process for their production and their pharmaceutical use
申请人:SANKYO COMPANY LIMITED
公开号:EP0171217A2
公开(公告)日:1986-02-12
Fused ring compounds of formula (I):
(where R1-R4, X1 and X2 represent hydrogen or various substituents, n and m are 1-3 and 2-7 respectively, the dotted lines are double or single bonds and Y is one oxygen or two hydrogens) have magnificent anti-arrhythmic activity, diuretic activity and the ability to improve brain function. For pharmaceutical use they may be formulated with carriers or diluents. They may be prepared by a ring-closing reaction of an indole derivative.