Patent ID: 6017911
Filing Date: 2000-01-25
Classification: C07D

Abstract:
A pyridonecarboxylic acid compound of the following formula (I): ##STR85## or an ester or salt thereof, wherein:R represents a lower alkyl group, a lower alkenyl group or a lower cycloalkyl group each of which may optionally be substituted by one or more halogen atoms, or R represents a phenyl group which may optionally be substituted by one or more halogen atoms and/or an amino group;X represents a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group, a lower alkoxy group or an amino group which may be protected;Y represents a hydrogen atom or a halogen atom;A represents a nitrogen atom or a group of the formula c--Z in which Z represents a hydrogen atom, a halogen atom, or a cyano group, or Z represents a lower alkoxy group, a lower alkyl group, a lower alkylthio group, a lower alkenyl group or a lower alkynyl group each of which may optionally be substituted by one or more halogen atoms, or A combines with R to form a bridge represented by the formula --O--CH.sub.2 --CH(CH.sub.3)--;R.sub.1 and R.sub.2 are the same or different and each represent a hydrogen atom, a lower alkyl group or an amino-protecting group;R.sub.3 represents a hydrogen atom or a lower alkyl group;R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are the same or different and each represent a hydrogen atom, a halogen atom or a lower alkyl group;m is 0 or 1; andn and p are the same or different and are each 0 or 1.