| 摘要 |
Compounds of the formula (1) <IMAGE> (1) wherein n is 1 or 2; R1 represents a hydrogen or a halogen atom, a C1-C4 alkyl group, a -CN group, a -CONH2 group or a -COOR8 group, wherein R8 represents hydrogen or a C1-C6 alkyl group, unsubstituted or substituted by di(C1-C4) - alkylamino; each of R2, R3 and R4 independently represents a hydrogen or a halogen atom, a C1-C4 alkyl group, a C1-C4 alkoxy group or a C3-C4 alkenyloxy group; A completes a bond, thereby providing a double bond or, when R1 is -COOR8 wherein R8 is as defined above, A may represent also a -CH2- group, thereby providing a cyclopropane ring fused to the pyrido ring; R is (a) furyl, thienyl or pyridyl; or (b) a group of formula <IMAGE> wherein each of R5, R6 and R7 represents, independently, a hydrogen or a halogen atom, hydroxy, formyloxy, C2-C8 alkanoyloxy, C1-C4 alkyl, C1-C4 alkoxy, nitro or a <IMAGE> wherein each of R9 and R10 independently represents hydrogen, C1-C4 alkyl, formyl or C2-C8 alkanoyl, or adjacent groups represented by two of R5, R6 and R7, taken together, form a C1-C3 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. |
