Pyridazinone derivatives of the formula (I) or (II):
wherein R' is hydrogen, C1-C6 alkyl or C2-C6 alkenyl and R2 and R3 are independently hydrogen, halogen, C1-C6 alkoxy, C1-C6 thioalkoxy, cyano, amino, C2-C6 acylamino, nitro, trifluoromethyl, carbamoyl, C1-C6 alkyl or C1-C6 haloalkyl, and pharmaceutically acceptable salts thereof and pharmaceutical compositions containing said derivatives having pharmaceutical activity, particularly cardiotonic activity.
式 (I) 或 (II) 的
哒嗪酮衍
生物:
其中 R' 是氢、C1-C6 烷基或 C2-C6 烯基,R2 和 R3 独立地是氢、卤素、C1-C6 烷氧基、C1-C6
硫代烷氧基、
氰基、
氨基、C2-C6
氨基酰基、硝基、三
氟甲基、
氨基甲酰基、C1-C6 烷基或 C1-C6 卤代烷基,以及它们的药学上可接受的盐和含有上述衍
生物的具有药物活性,特别是强心活性的药物组合物。