Abstract:
Cephem derivatives of the general formula ##STR1## in which the R.sub.2 O group is in the syn-position, a process for their manufacture and pharmaceutical formulations which are active against bacterial infections and contain these compounds.
Abstract:
Novel syn isomers of oximes of 3-azidomethyl-7-amino-thiazolyl-cephalosporanic acids of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms, unsaturated alkyl of 2 to 4 carbon atoms, benzoyl and --(CH.sub.2).sub.n --R.sub.1, n is an integer from 1 to 4, R.sub.1 is selected from the group consisting of NH.sub.2 and --COOA' and A' and A are selected from the group consisting of hydrogen, alkali metal, alkaline earth metal, magnesium, --NH.sub.4, an easily cleavable ester group and a non-toxic, pharmaceutically acceptable organic amine and their non-toxic, pharmaceutically acceptable acid addition salts having antibiotic activity and a novel process and novel intermediates for their preparation.
Abstract:
Novel syn isomers of 7-amino-thiazolyl-acetamido-3-acetoxymethyl-cephalosporanic acid derivatives of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of --CN, --CONH.sub.2 and --COOR.sub.1 ', R.sub.1 ' is selected from the group consisting of alkyl of 1 to 3 carbon atoms, hydrogen, alkali metal, alkaline earth metal, ammonium, magnesium and a non-toxic, pharmaceutically acceptable organic amine, A is selected from the group consisting of hydrogen, alkali metal, alkaline earth metal, ammonium, magnesium and a non-toxic, pharmaceutically acceptable organic amine, R' and R" are individually selected from the group consisting of hydrogen and alkyl of 1 to 3 carbon atoms with the ##STR2## group in the syn position with the proviso that when R.sub.1 is --COOR.sub.1 ' and R.sub.1 ' is hydrogen, A is hydrogen and when R.sub.1 is --COOR.sub.1 ' and R.sub.1 ' is an alkali metal, alkaline earth metal, magnesium, ammonium or an organic amine, A is an alkali metal, alkaline earth metal, magnesium, ammonium or an organic amine having antibiotic properties and novel intermediates and processes.
Abstract:
Novel syn isomers of 7-(2-amino-4-thiazolyl)-acetamido-cephalosporanic acid compounds of the formula ##STR1## wherein R is selected from the group consisting of --(CH.sub.2).sub.n --S--R.sub.2, --CHF.sub.2 and --(CH.sub.2).sub.n --S--CN, R.sub.2 is selected from the group consisting of optionally protonated ##STR2## n is an integer from 1 to 4, R.sub.1 is selected from the group consisting of hydrogen, chlorine, methoxy, alkyl and alkylthio of 1 to 5 carbon atoms, cycloalkyl of 3 to 5 carbon atoms, azidomethyl, acetoxymethyl, carbamoyloxymethyl, ##STR3## and --CH.sub.2 --S--R', Alk is alkyl of 1 to 4 carbon atoms, R' is selected from the group consisting of an optionally substituted nitrogen containing heterocycle and an acyl of an aliphatic acid of 2 to 4 carbon atoms, A is selected from the group consisting of hydrogen and an easily cleavable ester and when R is --(CH.sub.2).sub.n --SR.sub.2, the COOA group may be the anion --COO.sup.- and when R is --(CH.sub.2).sub.n --SCN or --CHF.sub.2, A may further be selected from the group consisting of an equivalent of an alkali metal, an alkaline earth metal, magnesium, --NH.sub.4 and a non-toxic, pharmaceutically acceptable organic amine and their non-toxic, pharmaceutically acceptable acid addition salts having antibiotic properties and a novel process and novel intermediates for their preparation.
Abstract:
Novel oximes of the syn isomers of 7-(2-amino-4-thiazolyl)-acetamido-cephalosporanic acid of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, chlorine, methoxy, alkyl and alkylthio of 1 to 5 carbon atoms, cycloalkyl of 3 to 5 carbon atoms, acetoxymethyl, carbamoyloxymethyl, ##STR2## A1K is 1 to 4 carbon atoms, azidomethyl and --CH.sub.2 --S--R' and R' is selected from the group consisting of a nitrogen heterocycle optionally substituted, acyl of an alkanoic acid of 2 to 4 carbon atoms, 2-oxo-(3H)-thiazolin-4-yl-carbonyl and 3-methyl-1,2-oxazol-5-ylcarbonyl, n is an integer from 2 to 4, R.sub.1, R.sub.2 and R.sub.3 are individually alkyl of 1 to 4 carbon atoms or together taken with the nitrogen atom they are attached to form a group selected from the group consisting of 1,4-diazobicyclo (2,2,2)octan-1-ylium and 1,3,5,7-tetraazatricyclo(3,3,1,1.sup.3,7) decan-1-ylium and their non-toxic, pharmaceutically acceptable acid addition salts having antibacterial properties and process for their preparation and novel intermediates.
Abstract:
Cephem derivatives of the general formula ##STR1## in which the R.sub.2 O group is in the syn-position, a process for their manufacture and pharmaceutical formulations which are active against bacterial infections and contain these compounds.
Abstract:
Novel desacetoxycephalosporin derivatives of the formula ##STR1## in racemic or optically active form or cis and trans forms and mixtures thereof wherein R is selected from the group consisting of aminophenyl and R', R' is selected from the group consisting of phenyl optionally substituted with at least one member of the group consisting of halogen and nitro and a 5 to 6 member heterocyclic group, Y is selected from the group consisting of amino, NHCOOR" where R" is alkyl of 1 to 5 carbon atoms, hydrogen and hydroxy, A is selected from the group consisting of ##STR2## in which at least 2 of R.sub.2, R.sub.3 and R.sub.4 are alkyl of 1 to 3 carbon atoms and the third is hydrogen or alkyl of 1 to 3 carbon atoms with the total number of carbon atoms being not greater than 5 and cycloalkyl of 3 to 7 carbon atoms optionally containing a heteroatom and R.sub.1 is selected from the group consisting of hydrogen, easily acid hydrolyzable group and easily hydrogenolysis removable group, with the proviso that when R is aminophenyl Y is other than amino and NHCOOR" and R.sub.1 is hydrogen and when Y is amino, R.sub.1 is hydrogen and the non-toxic, pharmaceutically acceptable addition salts with organic and inorganic bases and acids where appropriate which have antibacterial activity.
Abstract:
An improved method of making films, sheets or plates of a transparent plastics material of high optical quality comprises depositing a solution, molten mass or reaction mixture which yields the solid plastics on drying or hardening on a moving glass ribbon having a smooth upper surfce. The ribbon may be made by the float glass process. The plurality of plastics layer may be deposited one on another.
Abstract:
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.
Abstract:
Novel oximes of the syn isomers of 7-[2-(2-amino-4-thiazolyl)-acetamido]ceph-3-eme-4-carboxylic acid compounds of the fomrula ##STR1## wherein B is --(CH.sub.2).sub.n' --R.sub.5, n' is an integer from 1 to 4, R.sub.5 is ##STR2## R.sub.6 and R.sub.7 are individually selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms and when taken together with the nitrogen to which they are attached are selected from the group consisting of phthalimido and 1-pyridinyl, R.sub.1 is selected from the group consisting of chloro, CH.sub.3 O--, alkyl and alkylthio of 1 to 5 carbon atoms, cycloalkyl of 3 to 5 carbon atoms, --CH.sub.2 --S--R.sub.12, acetoxymethyl, carbamoyloxymethyl and ##STR3## R.sub.12 is selected from the group consisting of 2-oxo-(3H)-thiazolin-4-yl-carbonyl, 3-methyl-1,2-oxazol-5-yl-carbonyl, acyl of an alkanoic acid of 2 to 4 carbon atoms and a nitrogen heterocycle, Alka is alkyl of 1 to 4 carbon atoms and A is selected from the group consisting of hydrogen, --NH.sub.4, alkali metal, alkaline earth metal, magnesium, a non-toxic, pharmaceutically acceptable organic amine and easily cleaved ester and their non-toxic, pharmaceutically acceptable acid addition salts; having antibacterial activity and novel intermediates therefore.