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.
这项发明提供了式I的氨基吡啶衍生物,其中R.sub.1是氨基,或者是一个##EQU1##基团,其中R.sub.3和R.sub.4中的每一个是1至4个碳原子的烷基,或者R.sub.3和R.sub.4与它们结合的碳原子一起形成5至12个碳原子的环烷基亚甲基基团,R.sub.2是氢或甲基,A是一个--(CH.sub.2).sub.n--基团,其中n为0或1至7的整数,或者是一个>N--CO--R.sub.5基团,其中R.sub.5是1至16个碳原子的烷基或烯基,3至8个碳原子的环烷基,1-金刚烷基,或者是一个--(CH.sub.2).sub.m--R.sub.6基团,其中m为0或1至4的整数,R.sub.6是苯基;苯基单取代为氟、氯、溴、1至4个碳原子的烷基或烷氧基、1至4个碳原子的烷硫基,或苯基;苯基取代为两个或三个氯、1至4个碳原子的烷基或烷氧基的取代基;二苯甲基,其苯环可以单取代为氟、氯、溴、1至4个碳原子的烷基或烷氧基;或萘基,或者是一个--OR.sub.7基团,其中R.sub.7是1至4个碳原子的烷基或烯基,或苯基、苯基烷基或苯基烯基,它们可以在苯环上被氯、1至4个碳原子的烷基或烷氧基单取代,且烷基或烯基链为1至4个碳原子,R.sub.8和R.sub.9分别是氢或1至4个碳原子的烷基,以及它们的酸盐。该发明还提供了制备所述化合物的方法。所述化合物及其药学上可接受的酸盐作为降压药物。