申请人:Egyt Gyogyszervegyeszeti Gyar
公开号:US04303660A1
公开(公告)日:1981-12-01
The invention relates to novel pyrazolo[1,5-c]quinazoline derivatives of the general formula I ##STR1## wherein R represents a hydrogen atom, a C.sub.1-4 alkyl group or an acyl group, R.sub.1 represents a hydrogen atom, a C.sub.1-12 alkyl group, a C.sub.3-8 cycloalkyl group, a C.sub.2-4 alkenyl group, an aralkyl group, wherein the alkyl group has 1 to 4 carbon atoms, a phenylalkenyl group, wherein the alkenyl group has 2 to 4 carbon atoms, furthermore a carboxy group or a phenyl group optionally substituted by one or more substituents selected from the group consisting of halogen, hydroxy, C.sub.1-4 alkoxy, nitro or di(C.sub.1-4 alkyl)amino groups, or R and R.sub.1 may form together a valence bond, R.sub.2 represents a hydrogen atom, a C.sub.1-4 alkyl or a phenyl group, or R.sub.1 and R.sub.2 may form together a C.sub.2-7 alkylene group, R.sub.3 represents a nitro group, an amino group, an alkylamino group, a dialkylamino group, wherein the alkyl groups have 1 to 4 carbon atoms, an alkylideneimino group, wherein the alkylidene group has 1 to 4 carbon atoms, a benzylideneimino group or an acylamino group, and pharmaceutically acceptable acid addition salts thereof. The novel compounds of the general formula I can be employed primarily as analgesic agents.
该发明涉及一种新型的吡唑并[1,5-c]喹唑啉衍生物,其通式为I,其中R代表氢原子,C.sub.1-4烷基或酰基,R.sub.1代表氢原子,C.sub.1-12烷基,C.sub.3-8环烷基,C.sub.2-4烯基,芳基烷基,其中烷基含有1至4个碳原子,苯基烯基,其中烯基含有2至4个碳原子,此外还是一个羧基或者一个苯基,该苯基可以选择一个或多个卤素、羟基、C.sub.1-4烷氧基、硝基或二(C.sub.1-4烷基)氨基等取代基,或者R和R.sub.1可能共同形成一个价键,R.sub.2代表氢原子,C.sub.1-4烷基或苯基,或者R.sub.1和R.sub.2可能共同形成一个C.sub.2-7烷基烯基,R.sub.3代表硝基,氨基,烷基氨基,二烷基氨基,其中烷基含有1至4个碳原子,烷基亚胺基,其中烷基亚胺基含有1至4个碳原子,苯甲亚胺基或酰氨基,以及其药学上可接受的酸盐。通式I的新化合物主要可用作镇痛剂。