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Last Updated: April 3, 2026

Claims for Patent: 5,563,138

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Summary for Patent: 5,563,138

Title:	Benzoheterocyclic compounds
Abstract:	Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R1 is cyclopropyl which may have 1 to 3 substituents of alkyl and halogen; phenyl which may be substituted by 1 to 3 substituents of alkoxy, halogen and OH; alkyl which may be substituted by halogen, alkanoyloxy or OH; alkenyl; or thienyl, R2 is 5- to 9-membered saturated or unsaturated heterocyclic ring which may be sustituted, R3 is alkyl, R is H or alkyl, and X is halogen, and pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.
Inventor(s):	Hiraki Ueda, Hisashi Miyamoto, Hiroshi Yamashita, Hitoshi Tone
Assignee:	Otsuka Pharmaceutical Co Ltd
Application Number:	US07/179,239
Patent Claims:

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