Naphtho[1,2-b][1,4]thiazepin-4(5H)-ones and use thereof in treatment of
申请人:Hoffmann-La Roche Inc.
公开号:US04808580A1
公开(公告)日:1989-02-28
Compounds of the formula: ##STR1## wherein R.sub.1 is phenyl substituted with 1 to 3 substituents selected from the group consisting of lower alkoxy and halogen; R.sub.2 is hydroxy, lower alkoxy, lower alkanoyloxy, lower cycloalkylcarbonyloxy; ##STR2## or ##STR3## R.sub.3 and R.sub.4 are independently lower alkyl, phenyl lower alkyl or together form a piperidine or pyrrolidine ring; n is 2 to 4; m is 1 to 2; or pharmaceutically acceptable acid addition salts thereof are described. The compounds of formula I have activity as calcium channel blockers and accordingly, are useful as agents for lowering blood pressure, and as agents for treating ischemia.