申请人:Sandoz Ltd.
公开号:US03954754A1
公开(公告)日:1976-05-04
This invention provides aminopyridazine derivatives of formula I, ##SPC1## wherein R.sub.1 is amino, or an ##EQU1## group, wherein each of R.sub.3 and R.sub.4 is alkyl of 1 to 4 carbon atoms, or R.sub.3 and R.sub.4 together with the carbon atom to which they are bound, form a cycloalkylidene radical of 5 to 12 carbon atoms, R.sub.2 is hydrogen or methyl, A is a --(CH.sub.2).sub.n -- group, Wherein n is 0 or an integer from 1 to 7, or an >N--CO--R.sub.5 group, Wherein R.sub.5 is alkyl or alkenyl of 1 to 16 carbon atoms, cycloalkyl of 3 to 8 carbon atoms, 1-adamantyl, or a --(CH.sub.2).sub.m --R.sub.6 group, Wherein m is 0 or an integer from 1 to 4, and R.sub.6 is phenyl; phenyl monosubstituted by fluorine, chlorine, bromine, alkyl or alkoxy of 1 to 4 carbon atoms, alkylmercapto of 1 to 4 carbon atoms, or phenyl; phenyl substituted by two or three substituents of the group chlorine, alkyl or alkoxy of 1 to 4 carbon atoms; diphenylmethyl, the phenyl rings of which may be monosubstituted by fluorine, chlorine, bromine, alkyl or alkoxy of 1 to 4 carbon atoms; or naphthyl, Or an --OR.sub.7 group, Wherein R.sub.7 is alkyl or alkenyl of 1 to 4 carbon atoms, or phenyl, phenylalkyl or phenylalkenyl which may be monosubstituted on the phenyl ring by chlorine, alkyl or alkoxy of 1 to 4 carbon atoms, and in which the alkylene or alkenylene chain is of 1 to 4 carbon atoms, And R.sub.8 and R.sub.9 are each hydrogen or alkyl of 1 to 4 carbon atoms, And acid addition salts thereof. The invention also provides processes for the production of said compounds. Said compounds and pharmaceutically acceptable acid addition salts thereof are useful as antihypertensive agents.
本发明提供了式I的
氨基吡嗪衍
生物,其中R1是
氨基,或者是EQU1基团,其中R3和R4中的每一个都是1到4个碳原子的烷基,或者R3和R4连同它们所连接的碳原子形成5到12个碳原子的环烷基亚甲基基团,R2是氢或甲基,A是(
CH2)n基团,其中n为0或1到7的整数,或者是>N-CO-R5基团,其中R5是1到16个碳原子的烷基或烯基,3到8个碳原子的环烷基,1-
金刚烷基,或( )m-R6基团,其中m为0或1到4的整数,而R6是苯基;单取代为
氟、
氯、
溴、1到4个碳原子的烷基或烷氧基、1到4个碳原子的烷基
硫醇或苯基的苯基;取代为两个或三个
氯、1到4个碳原子的烷基或烷氧基的苯基;二苯甲基,其苯环可以单取代为
氟、
氯、
溴、1到4个碳原子的烷基或烷氧基;或
萘基,或OR7基团,其中R7是1到4个碳原子的烷基或烯基,或苯基、苯基烷基或苯基烯基,它们在苯环上可以单取代为
氯、1到4个碳原子的烷基或烷氧基,而且烷基或烯基链是1到4个碳原子,R8和R9分别是氢或1到4个碳原子的烷基,以及其酸加成盐。本发明还提供了制备上述化合物的方法。这些化合物及其药学上可接受的酸加成盐作为降压剂有用。