The present invention relates to novel 6-phenyl-5-alkyl substituted-4,5-dihydro-3-(2H)-pyridazinones of formula I:
in which R, is halogen, lower alkyl, lower alkoxy, No2, NH2, NHCOR3 (R, is H or C1-C4 alkyl), CN, carboxy, lower alkoxycarbonyl, carbamoyl, CF3, or OH and R2 is C1-C4 alkyl; the tautomeric forms and salts thereof; as their racemic mixtures or as the individual optically-active forms.
Compounds (I) are useful in pharmaceutical preparations having improved antithrombotic activity.
本发明涉及式 I 的新型 6-苯基-5-烷基取代-4,5-二氢-3-(2H)-
哒嗪酮:其中 R,是卤素、低级烷基、低级烷氧基、No2、NH2、NHCOR3(R,是 H 或 C1-C4烷基)、CN、羧基、低级烷氧基羰基、
氨基甲酰基、
CF3 或 OH,R2 是 C1-C4 烷基;其同分异构体及其盐;作为它们的外消旋混合物或作为单独的光学活性形式。 化合物 (I) 可用于提高抗血栓活性的药物制剂中。