Pyrazole-3-one derivative, method for preparing the same, and pharmaceutical composition containing the same

Abstract

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: 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.

Dependencies are inferred from the claim text.