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:
1
wherein:
R
1
and R
2
each independently represent C
1
-C
3
alkyl, aryl, or substituted aryl;
R
3
represents amino or methyl;
R
4
and R
5
each independently represent hydrogen, C
1
-C
3
alkyl, halogen, methyl substituted with halogen, C
1
-C
3
alkoxy, cyano, or nitro;
or a non-toxic salt thereof.
本发明提供了一种公式1的
吡唑酮衍
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,取代卤代甲基,C1-C3烷氧基,
氰基或硝基;或其非毒性盐。