[EN] RIFAMYCIN IMINO DERIVATIVES EFFECTIVE AGAINST DRUG-RESISTANT MICROBES<br/>[FR] DERIVES DE RIFAMYCINE IMINO EFFICACES CONTRES DES MICROBES PHARMACORESISTANTS
申请人:CUMBRE INC
公开号:WO2005070941A1
公开(公告)日:2005-08-04
The present invention relates to rifamycin 3-iminomethylenyl (-CH=N-) derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. The claimed rifamycin derivative has a rifamycin moiety covalently linked to a linker through an iminomethylenyl (-CH=N-) group at the C-3 carbon of the rifamycin moiety and the linker is, in turn, covalently linked to a quinolone structure or its pharmacophore within the DNA gyrase and topoisomerase IV inhibitor family. The inventive rifamycins are novel and exhibit activity against both rifampin and ciprofloxacin-resistant microorganisms.
C-25 carbamate rifamycin derivatives with activity against drug-resistant microbes
申请人:Combrink Keith
公开号:US20050256096A1
公开(公告)日:2005-11-17
Compounds of the current invention relate to rifamycin derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. More specifically, compounds of the current invention relate to C-25 carbamate derivatives of rifamycin having another functional group or pharmacophore covalently attached to this position through a carbamate linkage. The resulting compounds exert their antimicrobial activity through a dual-function mechanism and therefore exhibit reduced frequency of resistance.
Rifamycin derivatives effective against drug-resistant microbes
申请人:Ma Zhenkun
公开号:US20050261262A1
公开(公告)日:2005-11-24
Rifamycin derivatives having antimicrobial activities, including activities against drug-resistant microorganisms are claimed in this invention. The inventive rifamycin derivatives are uniquely designed in that they have a rifamycin moiety covalently linked to a linker group through the C-3 carbon of the rifamycin moiety and the linker is, in turn covalently linked to a therapeutic moiety or antibacterial agent/pharmacophore. The therapeutic moiety can be a quinolone, an oxazolidinone, a macrolide, an aminoglycoside, a tetracycline core or a structure/pharmacophore associated with an antibacterial agent.
Rifamycin imino derivatives effective against drug-resistant microbes
申请人:Ding Z. Charles
公开号:US20050209210A1
公开(公告)日:2005-09-22
The present invention relates to rifamycin 3-iminomethylenyl (—CH═N—) derivatives having antimicrobial activities, including activities against drug-resistant microorganisms. The claimed rifamycin derivative has a rifamycin moiety covalently linked to a linker through an iminomethylenyl (—CH═N—) group at the C-3 carbon of the rifamycin moiety and the linker is, in turn, covalently linked to a quinolone structure or its pharmacophore within the DNA gyrase and topoisomerase IV inhibitor family. The inventive rifamycins are novel and exhibit activity against both rifampin and ciprofloxacin-resistant microorganisms.
Quinolinecarboxylic acid derivatives and process for their preparation
申请人:KYORIN PHARMACEUTICAL CO., LTD.
公开号:EP0195841A1
公开(公告)日:1986-10-01
Quinolinecarboxylic acid derivatives of the following formula,
wherein R is hydrogen atom or methyl group; hydrates and pharmaceutically acceptable salts thereof are useful as an antibacterial agent.