摘要:
The invention relates especially to 2-(3'-hydroxypyrid-2'-yl)-2-thiazoline-4-carboxylic acid derivatives of the formula (I) and salts and also certain metal complexes of these compounds, processes for their manufacture, pharmaceutical agents containing such compounds and the use of these compounds. ##STR1## In the formula, R.sup.1 represents free, etherified or esterified hydroxy, R.sup.2 represents hydrogen or an aliphatic, carbocyclic or carbocyclic-aliphatic radical having 1-12 carbon atoms, and R.sup.3 represents hydrogen or an unsubstituted aliphatic radical having 1-7 carbon atoms.The compounds of the formula (I) can be used, for example, for the abstraction of heavy metals from the organism of warm-blooded animals and/or they have an antibiotic action.
摘要:
Compounds of the formula ##STR1## in which R is alkyl having up to 4 carbon atoms, n has an average value of at least 9, X is a radical of the formula --C(.dbd.O)--(NH--SO.sub.2).sub.m -- in which m is 0 or 1 and, if m is 1, the carhonyl group may be bonded to the oxygen atom or to the nitrogen atom, and each of the radicals A.sub.1, A.sub.2 and A.sub.3, independently of the others, is hydrogen or an acyl radical, and salts of salt-forming compounds of formula I, as well as metal complexes of compounds of formula I, in which A.sub.1, A.sub.2 and A.sub.3 are hydrogen can be used as metal chelators and as auxiliaries in diagnosis.
摘要:
3-Substituted 4(1H)-pyridone compounds of formula ##STR1## wherein R.sub.1 is an unsubstituted or substituted hydrocarbon radical, X is a bond or a group of formula --O-- or --N(R.sub.3)--, wherein R.sub.3 is hydrogen or an unsubstituted or substituted hydrocarbon radical, and R.sub.2 is an unsubstituted or substituted hydrocarbon radical, or wherein R.sub.2 and R.sub.3, when taken together, are an unsubstituted or substituted divalent hydrocarbon radical, and wherein the other ring carbon atoms of the 4(1H)-pyridinone ring, independently of one another, are unsubstituted or substituted by an unsubstituted or substituted hydrocarbon radical or by etherified or esterified hydroxy, and salts of compounds of formula I with salt-forming properties, form chelate-type metal complexes, especially with trivalent metal ions, and can be used, for example, as pharmacologically active compounds.
摘要:
Novel aminomethyl compounds of the formula ##STR1## wherein X denotes sulphur or oxygen, R denotes hydrogen or an amino protective group, R.sub.1 denotes hydrogen, a free, etherified or esterified hydroxyl group or mercapto group or a substituted ammonium group, R.sub.2 denotes hydroxyl or a carboxyl protective radical which together with the carbonyl grouping of the formula -C(=0)- forms a protected carboxyl group, and their salts, are antibacterial antibiotics or intermediates for the preparation thereof; pharmaceutical preparations containing such active compounds, are useful for combating micro-organisms such as gram-positive or gram-negative bacteria; An illustrative example is 3-acetoxymethyl-7.beta.-[2-(5-aminomethyl-2-thienyl)-acetylamino]-ceph-3-em-4-carboxylic acid.
摘要:
Compounds of the formula ##STR1## in which R is alkyl having up to 4 carbon atoms, n has an average value of at least 9, X is a radical of the formula --C(.dbd.O)--(NH--SO.sub.2).sub.m -- in which m is 0 or 1 and, if m is 1, the carbonyl group may be bonded to the oxygen atom or to the nitrogen atom, and each of the radicals A.sub.1, A.sub.2 and A.sub.3, independently of the others, is hydrogen or an acyl radical, and salts of salt-forming compounds of formula I, as well as metal complexes of compounds of formula I, in which A.sub.1, A.sub.2 and A.sub.3 are hydrogen can be used as metal chelators and as auxiliaries in diagnosis.
摘要:
N,O-acylates, derived from N-acylated carbamic acids, of desferrioxamine B of the formula ##STR1## in which B represents a carbamoyl radical of the partial formula --CO--NH--Alk--CO--O--R.sub.a.sup.1 (II) in which R.sub.a.sup.1 represents C.sub.1 -C.sub.4 -alkyl or C.sub.2 -C.sub.4 -alkyenyl and Alk represents C.sub.1 -C.sub.7 -alkylene that is optionally substituted by hydroxy, C.sub.1 -C.sub.4 -alkanoyloxy, amino, C.sub.1 -C.sub.4 -alkoxycarbonyl, carbamoyl, phenyl, hydroxyphenyl, methoxyphenyl or by indolyl, and each of the symbols A.sup.1, A.sup.2 and A.sup.3, independently of the others, represents hydrogen, an acyl radical Ac derived from a carboxylic acid, or an above-defined carbamoyl radical of the partial formula II, form strong iron(III) and aluminium complexes in living cells. They can therefore be used therapeutically for the treatment of pathological conditions in warm-blooded animals, including humans, that are associated with an excess of iron(III) or aluminium in the body or are caused by iron(III)-dependent pathogenic organisms. The compounds according to the invention can be obtained, for example, by conventional reaction of desferrioxamine B, or a suitable N- and O-silylated derivative thereof, with an isocyanatoalkanoic acid ester.
摘要:
3-R-Methyl-7-amino-ceph-2-em-4.xi.-carboxylic acid compounds, in which R is the C-residue of a C-nucleophilic compound are valuable intermediates, for example, in the manufacture of the corresponding 3-R-methyl-7-amino-ceph-3-em-4-carboxylic acid compounds with antibiotic properties.
摘要:
The invention concerns 7-amino-ceph-3-em-4-carboxylic acid compounds of the formula ##STR1## wherein R.sub.1.sup.a represents hydrogen or an amino protective group R.sub.1.sup.A and R.sub.1.sup.b represent hydrogen or an acyl group AC, or R.sub.1.sup.A and R.sub.1.sup.b together denote a bivalent amino protective group, and R.sub.2 represents hydrogen or an organic radical R.sub.2.sup.A which together with the --C(.dbd.O)--O-- grouping forms a protected carboxyl group, or salts such compounds which possess salt-forming groups; these compounds have antibiotic properties.
摘要:
The invention concerns 7-amino-ceph-3-em-4-carboxylic acid compounds of the formula ##STR1## wherein R.sub.1.sup.a represents hydrogen or an amino protective group R.sub.1.sup.A and R.sub.1.sup.b represent hydrogen or an acyl group Ac, or R.sub.1.sup.A and R.sub.1.sup.b together denote a bivalent amino protective group, and R.sub.2 represents hydrogen or an organic radical R.sub.2.sup.A which together with the --C(.dbd.O)--O-- grouping forms a protected carboxyl group, or salts such compounds which possess salt-forming groups; these compounds have antibiotic properties.