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US 4,539,401 AGranted
Pyridobenzoxazine derivatives useful as antibacterial agents
AssigneeDaiichi Seiyaku Co., Ltd.
InventorsIsao Hayakawa, Yoshiaki Tanaka
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Abstract
Pyridobenzoxazine derivatives of formula (I) ##STR1## wherein: X.sub.1 represents a hydrogen atom or a halogen atom, R.sub.1 represents a cyclic amino group which may contain additional hetero atom(s) of N,S and O and may be substituted with one or more substituents selected from the group consisting of hydroxyl, amino, alkyl, mono- or di-alkylamino, hydroxyalkyl and aminoalkyl, and physiologically acceptable salts thereof, having antibacterial activity.
Claims5
A benzoquinolizine derivative of formula (I) ##STR5## wherein:
- X.sub.1 represents a hydrogen atom or a halogen atom, R.sub.1 represents 1-pyrrolidinyl or 1-piperazinyl which may be substituted with one substituted selected from the group consisting of a hydroxyl group, an amino group and an alkyl group having from 1 to 6 carbon atoms, and physiologically acceptable salts thereof.
Dependencies are inferred from the claim text.