Pharmaceutical compositions of 4-(dibenzo-[a,d]cycloalkenyl)piperazine
申请人:Merck & Co., Inc.
公开号:US04616023A1
公开(公告)日:1986-10-07
Pharmaceutical compositions comprising 4-(dibenzo[a,d]cycloalkenyl)piperazine compounds and the use of said piperazine compounds for treatment of certain cardiovascular disorders are disclosed.
Tricyclic imines of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, X, m and n are as hereinafter described, prepared from the corresponding ketones of the formula ##STR2## wherein R.sup.1, X and m are as hereinafter described, are disclosed. The compounds of formula I are useful as antidepressants, as well as anticonvulsants and agents for the treatment of Parkinsonism.
Compounds having the formula:
wherein R4 is hydrogen or chloro;
R5 is carboxy, an ester thereof, or tetrazolyl;
R2 is hydrogen, halo, or alkoxy of 1 to 4 carbon atoms; and
R3 is hydrogen or bromo, with the proviso that when R4 is hydrogen, R5 is carboxy and R2 or R3 is other than hydrogen; and that when R4, R2 and R3 are all hydrogen, R5 is tetrazolyl; the stereoisomers thereof and the pharmaceutically acceptable salts thereof. The compounds of formula B wherein R5 is carboxy or tetrazolyl have pharmaceutical utility eg. as anti-inflammatory agents. The compounds where R5 is a carboxylic ester are intermediates for the corresponding acids. Pharmaceutical composition containing the active compounds are also disclosed.