申请人:Farmitalia Carlo Erba S.p.A.
公开号:US04521419A1
公开(公告)日:1985-06-04
Compounds of the formula (1) ##STR1## wherein n is 1 or 2; R.sub.1 represents a hydrogen or a halogen atom, a C.sub.1 -C.sub.4 alkyl group, a --CN group, a --CONH.sub.2 group or a --COOR.sub.8 group, wherein R.sub.8 represents hydrogen or a C.sub.1 -C.sub.6 alkyl group, unsubstituted or substituted by di(C.sub.1 -C.sub.4) - alkylamino; each of R.sub.2, R.sub.3 and R.sub.4 independently represents a hydrogen or a halogen atom, a C.sub.1 -C.sub.4 alkyl group, a C.sub.1 -C.sub.4 alkoxy group or a C.sub.3 -C.sub.4 alkenyloxy group; A completes a bond, thereby providing a double bond or, when R.sub.1 is --COOR.sub.8 wherein R.sub.8 is as defined above, A may represent also a --CH.sub.2 -- group, thereby providing a cyclopropane ring fused to the pyrido ring; R is (a) furyl, thienyl or pyridyl; or (b) a group of formula ##STR2## wherein each of R.sub.5, R.sub.6 and R.sub.7 represents, independently, a hydrogen or a halogen atom, hydroxy, formyloxy, C.sub.2 -C.sub.8 alkanoyloxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, nitro or a ##STR3## wherein each of R.sub.9 and R.sub.10 independently represents hydrogen, C.sub.1 -C.sub.4 alkyl, formyl or C.sub.2 -C.sub.8 alkanoyl, or adjacent groups represented by two of R.sub.5, R.sub.6 and R.sub.7, taken together, form a C.sub.1 -C.sub.3 alkylenedioxy group; and the pharmaceutically acceptable salts thereof have pharmaceutical activity in the treatment of allergic conditions and peptic ulcers, and inhibit the secretion of gastric acid.
式(1)的化合物 ##STR1## 其中n为1或2;R.sub.1代表氢或卤素原子,C.sub.1-C.sub.4烷基,--CN基团,--CONH.sub.2基团或--COOR.sub.8基团,其中R.sub.8代表氢或C.sub.1-C.sub.6烷基,未取代或被二(C.sub.1-C.sub.4)-烷基氨基取代;每个R.sub.2,R.sub.3和R.sub.4独立地代表氢或卤素原子,C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4烷氧基或C.sub.3-C.sub.4烯氧基;A完成键,从而提供双键或当R.sub.1为--COOR.sub.8,其中R.sub.8如上定义时,A也可以表示--CH.sub.2--基团,从而提供与吡啶环融合的环丙烷环;R为(a)呋喃基,噻吩基或吡啶基;或(b)公式 ##STR2## 其中每个R.sub.5,R.sub.6和R.sub.7独立地表示氢或卤素原子,羟基,甲酰氧基,C.sub.2-C.sub.8烷酰氧基,C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4烷氧基,硝基或##STR3## 其中每个R.sub.9和R.sub.10独立地表示氢,C.sub.1-C.sub.4烷基,甲酰基或C.sub.2-C.sub.8烷酰基,或由两个R.sub.5,R.sub.6和R.sub.7中的相邻基团组成,形成C.sub.1-C.sub.3烷二氧基基团;以及其药学上可接受的盐在过敏性疾病和消化性溃疡的治疗中具有药理活性,并抑制胃酸的分泌。