Pyridonecarboxylic acid derivatives or their salts and antibacterial agent comprising the same as the active ingredient

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United States of America Patent

PATENT NO 5998436
SERIAL NO

09043472

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Abstract

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A pyridonecarboxylic acid derivative represented by the following general formula (1): ##STR1## [wherein R.sup.1 represents hydrogen atom or a carboxyl protective group; R.sup.2 represents hydroxyl group, a lower alkoxy group, or a substituted or unsubstituted amino group; R.sup.3 represents hydrogen atom or a halogen atom; R.sup.4 represents hydrogen atom or a halogen atom; R.sup.5 represents a halogen atom or an optionally substituted saturated cyclic amino group; R.sup.6 represents hydrogen atom, a halogen atom, nitro group, or an optionally protected amino group; X, Y and Z may be the same or different and respectively represent nitrogen atom, --CH.dbd. or --CR.sup.7 .dbd. (wherein R.sup.7 represents a lower alkyl group, a halogen atom, or cyano group) (with the proviso that at least one of X, Y and Z represent the nitrogen atom), and W represents nitrogen atom or --CR.sup.8 .dbd. (wherein R.sup.8 represents hydrogen atom, a halogen atom, or a lower alkyl group)] or its salt, as well as an antibacterial agent containing such compound are provided.

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Patent Owner(s)

Patent OwnerAddress
WAKUNAGA PHARMACEUITCAL CO LTD5-36 MIYAHARA 4-CHOME YODOGAWA-KU OSAKA-SHI OSAKA 532-0003

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amano, Hirotaka Hiroshima-ken, JP 11 114
Hayashi, Norihiro Hiroshima-ken, JP 50 320
Hirao, Yuzo Hiroshima-ken, JP 10 73
Kuramoto, Yasuhiro Hiroshima-ken, JP 16 112
Niino, Yoshiko Hiroshima-ken, JP 11 106
Ohshita, Yoshihiro Hiroshima-ken, JP 10 70
Yazaki, Akira Hiroshima-ken, JP 22 153

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