A pyrazole-3-one derivative of formula 1 or a non-toxic salt thereof, a preparation method thereof, and a pharmaceutical composition containing the derivative or the salt as an active ingredient are provided:
wherein:
R1 and R2 each independently represent C1-C3 alkyl, aryl, or substituted aryl;
R3 represents amino or methyl;
R4 and R5 each independently represent hydrogen, C1-C3 alkyl, halogen, methyl substituted with halogen, C1-C3 alkoxy, cyano, or nitro;
or a non-toxic salt thereof.
本发明提供了式1的
吡唑烷酮衍
生物或其非毒性盐,以及其制备方法和含有该衍
生物或盐作为活性成分的制药组合物:其中:R1和R2各自独立地表示C1-C3烷基,芳基或取代芳基;R3表示
氨基或甲基;R4和R5各自独立地表示氢,C1-C3烷基,卤素,用卤素取代的甲基,C1-C3烷氧基,
氰基或硝基;或其非毒性盐。