摘要:
Penem derivatives of the formula ##STR1## having R.sup.1 equal to 3-oxocyclobutyl and R.sup.2 equal to H or an ester-forming group, pharmaceutical preparations active against bacterial infections and which contain penem derivatives of this type, processes for the preparation of the penem derivatives and the pharmaceutical preparations, and use of the penem derivatives for the control of bacterial infections are described.
摘要:
The present invention relates to a process for the preparation of 7-amino-3-methoxymethylceph-3-em-4-carboxylic acid (I) from 7-amino-3-methoxymethylceph-3-em-4-carboxylic acid esters (II) or their salts by ester cleavage.The process comprises treating the compound II with formic acid, trifluoroacetic acid, methanesulfonic acid or trifluoromethanesulfonic acid or a mixture of two of these acids in each case.
摘要:
Phenylpiperazine derivatives of the formula I ##STR1## in which R.sup.1 denotes hydrogen or C.sub.1 -C.sub.6 alkyl,R.sup.2 denotes hydrogen or one or several, identical or different substituents selected from the group of C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 alkoxy, halogen, trifluoromethyl, hydroxy, nitro, amino and methylene-dioxy,R.sup.3 denotes hydrogen, hydroxy, C.sub.1 -C.sub.6 alkanoyloxy, andn is 1 or 2,and the physiologically acceptable salts thereof, processes for their manufacture and medicaments containing or consisting of said compounds.
摘要:
Enterally absorbable diastereomers of 1-(isopropoxycarbonyloxy)ethyl (6R,7R)-7-[2-(2-aminothiazol-4-yl)-2-(Z)-(methoxyimino)acetamido]-3-(methoxymethyl)-3-cephem-4-carboxylate of the formula I ##STR1## and their physiologically acceptable salts and also diastereomerically pure salts of the compounds of the formula II ##STR2## where HX is a mono- or polybasic acid and where X is an inorganic or organic physiologically acceptable anion, and a process for the preparation of these compounds of the formula I or II, which comprises first precipitating the more sparingly soluble diastereomer of the formula IV in the mixing together of 1 equivalent of a solution of the diastereomer mixture of the formula III with 0.2-2 equivalents of a solution of the acid component HY and separating it off by filtration, then precipitating the more readily soluble diastereomer of the formula IV from the filtration solution, it being possible for the acid component HY to be identical or different in the consecutive partial steps and any desired sequence of addition of different acid components HY being possible, and optionally further purifying the obtained salts by crystallization, are described.
摘要:
What are disclosed are anti-bacterially active cephalosporin compounds of the formula ##STR1## pharmaceutical preparations containing such compounds, methods of making the compounds, methods for combatting bacterial infections therewith, and intermediates for such compounds.
摘要:
Process for the preparation of cephem compounds of the formula ##STR1## wherein R is optionally substituted aminothiazolyl or amino-1,2,4-thiadiazolyl, A is optionally substituted pyridinium, R.sup.1 is hydrogen or methoxy and R.sup.2 are special aliphatic substituents, by a nucleophilic replacement in the substituent in 3-position in the presence of tri-C.sub.1 C.sub.4 -alkyl iodosilane.
摘要:
Compounds of the formula I ##STR1## in which R represents a cycloalkenyl radical having 5 to 7 carbon atoms, in which the ethylenic double bond is not in an adjacent position to the CO-group, or a cycloalkenyl radical having 5 to 7 carbon atoms, in which the ethylenic double bond is not in an adjacent position to the CO-group, and substituted one or more times by alkyl having 1 to 4 carbon atoms, phenyl, benzyl or chlorine, process for their manufacture, medicaments containing them and their use for the treatment of sideropenia symptoms and sideropenic anaemiae.
摘要:
3,5,5-Trimethylhexanoyl ferrocene of the formula ##STR1## a process for its manufacture, medicaments containing this compound and the use thereof for the treatment of sideropeniasymptoms and sideropenic anaemiae.