摘要:
7-(.alpha.,.alpha.-disubstituted-acetamido)-3-substituted-3-cephem-4-carboxylic acids having antibacterial properties and the following formula are disclosed: ##STR1## wherein R.sup.1 is hydrogen, halogen, hydroxy, nitro, lower alkoxy or acylamino, R.sup.2 is hydrogen or acyl andR.sup.3 is lower alkanoyloxy, carbamoyloxy which may have lower alkyl, aryl or protective group for amino or a heterocyclicthio which may have lower alkyl.
摘要:
New antimicrobial azetidinone derivatives and their salt of the formula: ##STR1## wherein R.sub.1 amino or acylamino, and A is selected from a variety of groups.
摘要:
This invention relates to novel cephem compounds of high antimicrobial activity comprising the syn-isomers of 7-substituted-3-cephem-4-carboxylic acid esters of the formula: ##STR1## wherein R is lower alkanoyloxy (C.sub.2 -C.sub.6)alkyl, isobutyryloxymethyl, 2-ethylbutyryloxymethyl or 3,3-dimethylbutyryloxymethyl,or salts thereof.
摘要:
The invention relates to novel 7-acylamino-3-substituted cephalosporanic acid derivatives of high antimicrobial activity, of the formula ##STR1## in which R.sup.5 is amino or a protected amino group,R.sup.2 is methoxymethyl,R.sup.3 is carboxy or a protected carboxy group, andR.sup.6 is lower alkyl, and a pharmaceutically acceptable salt thereof.
摘要:
This invention relates to novel 7-acylamino-3-vinyl-cephalosporanic acid derivatives and pharmaceutically acceptable salts thereof, of high antimicrobial activity.
摘要:
The invention relates particularly to syn compounds of the formula: ##STR1## wherein R.sup.2 is an aliphatic hydrocarbon residue substituted with halogen, carboxy or esterified carboxy,R.sup.4 is halogen or a group of the formula:--O--R.sup.7, in which R.sup.7 is lower alkyl,R.sup.5 is carboxy or functionally modified carboxy andR.sup.6 is amino or protected amino, and pharmaceutically acceptable salt thereof, processes for making the compounds, pharmaceutical compositions containing them and their use to treat infectious diseases.
摘要:
Syn-isomers of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and pharmaceutically acceptable salts thereof which have anti-bacterial activities and the processes for the preparation thereof, to pharmaceutically composition comprising the same, and to a method of using the same therapeutically and the treatment of infectious diseases in animals and human beings.
摘要:
Bacteriostatic cephem compounds and processes for preparing same having the formula: ##STR1## wherein R.sup.1 is amino or protected amino,R.sup.2 is lower alkyl, amino-(lower)-alkyl, protected amino-(lower)-alkyl, hydroxy-(lower)-alkyl, protected hydroxy-(lower)-alkyl, lower alkylthio-(lower)-alkyl, carboxy-(lower)-alkyl, esterified carboxy-(lower)-alkyl, (C.sub.3 to C.sub.8) cycloalkyl, lower alkenyl or lower alkynyl,R.sup.3 is a heterocyclic group substituted with amino(lower)alkyl, protected amino(lower)-alkyl, hydroxy(lower)alkyl or both amino and lower alkyl,R.sup.4 carboxy or protected carboxy,provided that R.sup.3 is a heterocyclic group substituted with hydroxy(lower)alkyl or both amino and lower alkyl, when R.sup.2 is lower alkyl,and its pharmaceutically acceptable salt.
摘要:
3-Substituted-7-substituted alkanamido-3-cephem-4-carboxylic acid compounds and pharmaceutically acceptable salts thereof which have antimicrobial activities, processes for the preparation thereof, pharmaceutical compositions comprising the same, and methods of using the same therapeutically in the treatment of infections.
摘要:
New antimicrobial azetidinone derivatives and their salt of the formula: ##STR1## wherein R.sub.1 is amino or acylamino, and A is selected from a variety of groups.