Intermediates for certain 4-oxoquinoline-3-carboxylic acid derivatives
申请人:Sanko Company, Limited
公开号:US05436367A1
公开(公告)日:1995-07-25
Compounds of formula (I): ##STR1## (in which: R.sup.1 represents fluorinated methoxy; R.sup.2 represents a nitrogen-containing heterocyclic group and R.sup.3 represents hydrogen or amino) and pharmaceutically acceptable salts, esters and amides thereof are valuable antibacterial agents, which may be prepared by reacting a compound similar to that of formula (I) but in which R.sup.2 is replaced by a halogen atom with a compound providing the required group R.sup.2.
4-oxoquinoline-3-carboxylic acid derivatives their preparation and their
申请人:Sankyo Company, Limited
公开号:US05496951A1
公开(公告)日:1996-03-05
Compounds of formula (I): ##STR1## (in which: R.sup.1 represents fluorinated methoxy: R.sup.2 represents a nitrogen-containing heterocyclic group and R.sup.3 represents hydrogen or amino) and pharmaceutically acceptable salts, esters and amides thereof are valuable antibacterial agents, which may be prepared by reacting a compound similar to that of formula (I) but in which R.sup.2 is replaced by a halogen atom with a compound providing the required group R.sup.2.
4-oxoquinoline-3-carboxylic acid derivatives and their use
申请人:Sankyo Company Limited
公开号:US05073556A1
公开(公告)日:1991-12-17
Compounds of formula (I): ##STR1## (in which: R.sup.1 represents fluorinated methoxy; R.sup.2 represents a nitrogen-containing heterocyclic group and R.sup.3 represents hydrogen or amino) and pharmaceutically acceptable salts, esters and amides thereof are valuable antibacterial agents, which may be prepared by reacting a compound similar to that of formula (I) but in which R.sup.2 is replaced by a halogen atom with a compound providing the required group R.sup.2.
Intermediates in the preparation of 4-oxoquinoline-3-carboxylic acid derivatives
申请人:UBE INDUSTRIES, LTD.
公开号:EP0610958A2
公开(公告)日:1994-08-17
Compounds of formula (XII), (XX), (XX'),(XXI) and
in which R1 represents fluorinated methoxy, R3 represents hydrogen or amino, R3' represents hydrogen or nitro, R3" represents hydrogen, nitro or amino, X and X' represent halogen and R17 represents a carboxy protecting group, are useful in the preparation of 4-oxoquinoline-3-carboxylic acid derivatives.