Patent ID: 6211375
Filing Date: 2001-04-03
Classification: A61P,C07D

Abstract:
A pyridonecarboxylic acid derivative represented by the following formula (1): ##STR9##(wherein R.sup.1 represents hydrogen atom, a halogen atom or a lower alkyl group; R.sup.2 represents hydrogen atom or a lower alkyl group; R.sup.3 represents substituted or unsubstituted amino group or hydroxyl group wherein the substituents of the substituted amino group are selected from the group consisting of a lower alkyl group, a lower alkenyl group, an aralkyl group containing 7 to 11 carbon atoms, an aryl group containing 6 to 14 carbon atoms, a lower alkanoyl group, a lower alkoxycarbonyl group, an aroyl group containing 7 to 15 carbon atoms, and R.sup.4 represents hydrogen atom, a lower alkyl group, amino group or nitro group) or its salt.