3,7-Disubstituted-2 or 3-cephem-4-carboxylic acid compounds
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04399278A1
公开(公告)日:1983-08-16
7-Amino-2 or 3-cephem-4-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.1 is amino; R.sup.2 is carboxy or carboxy protected by a pharmaceutically acceptable group; ##STR2## is di(lower)alkylamino(lower)alkylamino, an unsaturated or saturated 3 to 8 membered heteromonocyclic(lower)alkylamino group containing 1 to 4 nitrogen atoms, an unsaturated or saturated 3 to 8 membered heteromonocyclic(lower)alkylamino group containing 1 to 4 nitrogen atoms substituted by lower alkyl orhydroxy(lower)alkyl, an unsaturated or saturated 5 to 6 membered heteromonocyclic group containing 2 to 4 nitrogen atoms, an unsaturated or saturated 5 to 6 membered heteromonocyclic group containing 2 to 4 nitrogen atoms substituted by lower alkyl or hydroxy(lower)alkyl or hydroxypiperidino, and X is --S or ##STR3## and pharmaceutically acceptable salts thereof.
This invention relates to novel cephem compounds of high antimicrobial activity of the formula ##STR1## wherein R.sup.1 is amino or a protected amino, R.sup.2 is lower alkyl, R.sup.3 is hydrogen or lower alkyl, R.sup.4 is hydrogen, acyloxy(lower)alkyl or acylthio(lower)alkyl and R.sup.5 is carboxy or a protected carboxy.
7-[2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-(substituted)-iminoacetamido]-3-[3-( quaternaryammonio)-1-propen-1-yl]-3-cephem-4-carboxylates of the formula ##STR1## in which R.sup.1 and R.sup.2 are defined herein and --.sup..sym. N.tbd.Q is a quaternary ammonio group as defined herein, and salts, solvates, hydrates and esters thereof, are potent antibacterial agents. Processes for their preparation and intermediates in such processes are described.
New cephem compounds and processes for preparation thereof
申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04268509A1
公开(公告)日:1981-05-19
This invention relates to new 7-substituted-3-cephem-4-carboxylic acids and pharmaceutically acceptable salts thereof, which have antimicrobial activities, and processes for preparation thereof, to intermediates for preparing the same and processes for preparation thereof, and to pharmeceutical compositions comprising the same and methods of using the same prophylactically and therapeutically for treatment of infectious diseases in human beings and animals.