The invention relates particularly to syn compounds of the formula: ##STR1## wherein R.sup.2 is hydrogen or an aliphatic hydrocarbon which may be substituted with halogen, carboxy or pharmaceutically acceptable esterified carboxy, R.sup.5 is carboxy or pharmaceutically acceptable esterified carboxy, R.sup.6 is amino or protected amino and R.sup.7 is lower alkanesulfonyl or arenesulfonyl and pharmaceutically acceptable salt thereof, processes for making them, pharmaceutical compositions containing them and their use in treating infectious diseases.
Compounds of the formula ##STR1## wherein R is selected from the group consisting of hydrogen and groups easily removable by acid hydrolysis of hydrogenolysis, R' is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, alkenyl and alkynyl of 2 to 4 carbon atoms and groups easily removable by acid hydrolysis or hydrogenolysis. A is selected from the group consisting of hydrogen, alkali metal and equivalents of an alkaline earth metal or magnesium and an organic amine base with the proviso that when R' is a group easily removable by acid hydrolysis of hydrogenolysis, R is also and when R' is hydrogen, R also is hydrogen and the wavy line means the OR' group may be in either one of the two possible syn or anti positions having antibiotic activity and process for their preparation.
The invention relates to new thiadiazolyl or thiazolyl-substituted cephem and cepham compounds, the pharmaceutically acceptable salts and bioprecursors thereof, of antimicrobial activity, processes for preparation thereof, intermediates for preparing the new compounds and to pharmaceutical compositions comprising the new compounds, and methods of using the compositions for treatment of infectious diseases.
New cephem and cepham compounds and processes for preparation thereof
申请人:Fujisawa Pharmaceutical Company, Limited
公开号:US04841062A1
公开(公告)日:1989-06-20
Compounds of the formula: ##STR1## wherein R.sup.2 is cyclo(lower)alkyl or lower alkynyl having 2 to 6 carbon atoms, and R.sup.6 is amino or protected amino, or the reactive derivative at the carboxy group, are disclosed as intermediates for the preparation of cephem and cepham compounds having antimicrobial activity.
Compounds of the formula ##STR1## wherein R is selected from the group consisting of hydrogen and groups easily removable by acid hydrolysis or hydrogenolysis, R' is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, alkenyl and alkynyl of 2 to 4 carbon atoms and groups easily removable by acid hydrolysis or hydrogenolysis, A is selected from the group consisting of hydrogen, alkali metal and equivalents of an alkaline earth metal or magnesium and an organic amine base with the proviso that when R' is a group easily removable by acid hydrolysis or hydrogenolysis, R is also and when R' is hydrogen, R also is hydrogen and the wavy line means the OR' group may be in either one of the two possible syn or anti positions having antibiotic activity and process for their preparation.