Some new 3-amino-2H-1,2,4-benzothiadiazine 1,1-dioxides
作者:Timothy H. Cronin、Hans-Juergen Hess
DOI:10.1021/jm00307a029
日期:1968.1
Phenylpiperazine derivatives and their acid addition salts
申请人:Mitsubishi Chemical Industries Limited
公开号:US04716161A1
公开(公告)日:1987-12-29
A phenylpiperazine derivative according to the present invention has the following general formula [I]: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen or alkoxy group having 1 to 3 carbon atoms, or R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3 together with carbon atoms to which they are attached form --O(CH.sub.2).sub.m O-- wherein m is an integer of 1 to 3, or either R.sup.1 or R.sup.2 is amine residue selected from the group consisting of --NH.sub.2 , --NHSO.sub.2 CH.sub.3, --NHCOCH.sub.3 and --NHCONH.sub.2 and the other is hydrogen or alkoxy group of 1 to 3 carbon atoms and R.sup.3 is hydrogen; R.sup.4 and R.sup.5 are independently hydrogen or alkyl group of 1 to 3 carbon atoms; Y is --CO-- or --SO.sub.2 -- provided that at least one of R.sup.1 and R.sup.2 is not hydrogen when Y is --CO--; and n is an integer of 2 to 4. An acid addition salt of the phenylpiperazine derivative having the general formula [I] is included in the present invention. The phenylpiperazine derivative as well as its acid addition salt according to the present invention have the ability to reduce the blood pressure.