Patents
Sitemap › C07 - Organic chemistry › C07D - Heterocyclic compounds › C07D 501 - Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
Patents for C07D 501 - Heterocyclic compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. cephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring (7,574)
12/1981
12/23/1981EP0042232A2 Cephalosporin derivatives, processes for their preparation and compositions containing them
12/23/1981EP0042154A1 New cephem compounds and processes for preparation thereof
12/22/1981US4307233 3-Vinyl-cephalosporin derivatives
12/22/1981US4307230 3-Vinyl-cephalosporins
12/22/1981US4307116 Bactericides
12/22/1981US4307090 Cephalosporins - bactericides
12/22/1981CA1114808A1 Derivatives of 7-¬substituted oxyiminoacetamido| cephalosporins
12/16/1981EP0041655A2 2-(2-Amino-thiazol-4-yl)-N-(imidazolidin and perhydro-1,3-diazin-2-on-1-yl)-2-iminoacetylcephalosporins of the syn-form, and process for their preparation
12/15/1981US4305937 2-Lower alkyl-7-substituted-2 or 3-cephem-4-carboxylic acid compounds and antibacterial pharmaceutical compositions containing them
12/08/1981US4304909 Acylation of a 7-amino cephem compound and treatment with n,n-dimethylacetamide
12/08/1981US4304770 Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and processes for the preparation thereof
12/08/1981US4304717 Acylation
12/08/1981CA1113927A1 Derivatives of 7-(cyclized)phenylglycyl cephalosporin
12/01/1981US4303655 Microbiocides
12/01/1981CA1113455A1 7-acylamido-3-(2-carboxyalkyl-2,3-dihydro-3-triazolo ¬4,3-b| pyridazin-3-on-6-ylthiomethyl)-3-cephem- 4-carboxylic acids
12/01/1981CA1113454A1 ALKOXYLATED .beta.-LACTAM COMPOUNDS AND THEIR PREPARATION
12/01/1981CA1113453A1 Compounds with terminal aminocarboxylic acid grouping
11/1981
11/24/1981US4302581 Condensing a cephalosporanic acid with an s-askylated salt of 1,3-dithiolane-2-thione
11/24/1981US4302580 Process for the production of a cephamycin derivative
11/24/1981US4302578 Cephalosporin antibiotics
11/24/1981US4302454 Cephalosporins
11/24/1981CA1113087A1 Process for preparing cephalosporanic acid derivatives
11/17/1981US4301280 Preparation of 3-substituted cephalosporins
11/17/1981US4301279 Reaction of an unsaturated cephalosporin with a borohydride to produce the corresponding saturated compound
11/17/1981US4301278 Process for the manufacture of enol derivatives
11/17/1981US4301161 Bactericides
11/10/1981US4299955 Process for preparing derivatives of 7-amino-desacetoxy cephalosporanic acid
11/10/1981US4299954 Microbiocides
11/10/1981US4299829 Microbiocides
11/10/1981CA1112238A1 Cephem compounds and processes for preparation thereof
11/10/1981CA1112237A1 Cephem compounds and processes for preparation thereof
11/03/1981US4298732 Crystallization process
11/03/1981US4298607 Crystalline salt of 7β-[2-(2-aminothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-[(1-methyl-1H-tetrazol-5-yl)thiomethyl]ceph-3-em-4-carboxylic acid and HCl or HBr
11/03/1981US4298606 Cephalosporin antibiotics
11/03/1981US4298605 Cephalosporin derivatives
11/03/1981US4298529 Intermediates for useful cephalosporins
10/1981
10/28/1981EP0038641A1 Process for producing D-2-amino-2-(1,4-cyclohexadienyl) acetic acid
10/28/1981EP0038626A1 A process for electrolytic reduction of cephalosporin p-nitrobenzyl esters
10/27/1981US4297489 7-α-Amino-substituted acylamino-3-(1-carboxymethyltetrazol-5-ylthiomethyl)-3-cephem-4-carboxylic acids
10/27/1981US4297488 7-α-Methoxy cephalosporins
10/27/1981US4297352 Cephalosporins; bactericides; antibiotics
10/27/1981US4297279 Chemical intermediate for modified a-aminopenicillins and -cephalosporins
10/27/1981CA1111413A1 PROCESS FOR THE PREPARATION OF A [D-.alpha.-AMIDO-(P- HYDROXYPHENYL)-ACETAMIDO] GROUP CONTAINING PENICILLANIC ACID AND CEPHALOSPORANIC ACID DERIVATIVES
10/20/1981US4296236 Antibiotics
10/20/1981US4296112 Antibacterial
10/20/1981US4296111 7-Substituted methyl cephalosporins derivatives and analogues thereof
10/20/1981CA1111049A1 Process for 2-chlorosulfinylazetidin-4-ones
10/20/1981CA1111022A1 Sulfur analogs of penicillins and cephalosporins
10/20/1981CA1111021A1 Acyl derivatives
10/14/1981EP0037797A2 Cephalosporin derivatives, process for their preparation, pharmaceutical compositions containing them and their application
10/14/1981EP0037480A1 Process for the preparation of 5-arylidenehydantoins
10/13/1981US4294960 7-[2-(2-Aminothiazol-4-yl)-2-cyclopentyloxyiminoacetamido]-3-cephem-4-carboxylic acid (synisomer)
10/13/1981US4294827 Antibacterial and growth promoting β-lactam antibiotics carrying an -ylidene-2-pyrrolidinon-1-yl radical
10/13/1981CA1110635A1 Aromatic acetic acid derivatives having sulfur atom at alpha-position and process for their preparation
10/07/1981EP0037380A2 New process for the production of cephalosporin antibiotics, and novel intermediates used in such process and their production
10/06/1981US4293550 Cephalosporin derivatives
10/06/1981US4293462 3-acylamino-4-thio-2-oxoazetidin-1-yl/-amino crotonic acids
10/06/1981CA1110231A1 7.beta.-AMINO-CEPHAM-3-ONE-4-CARBOXYLIC ACIDS
10/06/1981CA1110230A1 O-SUBSTITUTED 7.beta.-AMINO-3-CEPHEM-3-OL-4-CARBOXYLIC ACIDS
09/1981
09/30/1981EP0036812A1 Cephalosporin derivatives, process for their preparation and antibiotic compositions containing them
09/30/1981EP0036776A2 A method of creating an expression plasmid
09/30/1981EP0036673A1 New thiadiazol compounds and processes for their preparation
09/30/1981EP0036652A2 Cephalosporin derivatives, process for their preparation, corresponding compositions, their use in the treatment of diseases and intermediates
09/30/1981EP0036650A2 Cephalosporin derivatives, process for their preparation, corresponding compositions, their use in the treatment of diseases and intermediates
09/30/1981EP0036510A2 Synisomer cephalosporin compounds and processes for their preparation
09/29/1981US4292428 Cephalosporin derivatives
09/29/1981US4292427 Cephalosporin compounds
09/29/1981CA1109860A1 Process for producing lactol-type cephalosporins
09/29/1981CA1109859A1 Thiooxime cephalosporin and penicillin derivatives
09/29/1981CA1109795A1 Compositions comprising a cephalosporin and a carbonic acid salt
09/22/1981US4291164 Catalytic reduction of azide derivative to amine
09/22/1981US4291160 7-(1,3-Dithiolan-2-imino)-Δ2 -cephalosporanic acid derivatives
09/22/1981US4291031 3-Phosphonocephalosporanic acid derivatives, and pharmaceutical composition comprising the same
09/22/1981CA1109462A1 Production of 7(2-aminomethylphenylacetamido-3-(1- carboxymethyltetrazol-5-ylthiomethyl)-3-cephem-4- carboxylic acid
09/22/1981CA1109461A1 Cephalosporin derivatives and processes for their manufacture
09/22/1981CA1109460A1 Cyanoalkylureido cephalosporins
09/22/1981CA1109459A1 Process for preparation of 7-alkoxy-3- chloromethylcephems
09/09/1981EP0035413A2 Antimicrobial 7-(alpha-acylamino-alpha-arylacetamido)-3-(substituted methyl)cephalosporin compounds, their compositions and production
09/09/1981EP0035357A1 2-Methylcephalosporins and production thereof
09/09/1981EP0035161A2 Cephalosporins, processes for their preparation and pharmaceutical compositions containing these compounds
09/08/1981US4288590 Antibiotics
09/08/1981US4288450 Antiallergens
09/08/1981US4288436 Antibiotics
09/08/1981US4288435 3,7-Disubstituted-3-cephem-4-carboxylic acid compounds and pharmaceutical antibacterial compositions containing them
09/08/1981US4288434 Cephalosporanic acid derivatives
09/08/1981CA1108603A1 Heteromonocyclic and heterobicyclic derivatives of unsaturated 7-acylamido-3-cephem-4-carboxylic acid and process for their preparation
09/08/1981CA1108602A1 Cephalosporin compounds
09/02/1981EP0034924A2 Process for preparing 3-iodomethyl cephalosporins
09/02/1981EP0034760A1 Cephalosporin derivatives, pharmaceutical compositions and process for their preparation
09/02/1981EP0034759A2 Chromogen cephalosporins and process for their preparation
09/01/1981US4287193 Syn isomers of 7-[2-(2-amino-4-thiazolyl)-2-(carboxymethyloxyimino)-acetamido]-ceph-3-eme-4-carboxylic acid compounds
09/01/1981CA1108121A1 Process for preparation of 7-alkoxy-3- bromomethylcephems
09/01/1981CA1108075A1 Process for preparing cephamycin c
08/1981
08/26/1981EP0034536A2 Oxime derivatives of 3-alkyloxy- or 3-alkylthiomethyl 7-amino-thiazolylacetamido cephalosporanic acid, their preparation, their use as medicaments and compositions containing them
08/26/1981EP0034394A2 Process for the preparation of 3'-bromosubstituted deacetoxycephalosporanic acid sulphoxide derivatives
08/25/1981US4286089 7-Acyl-3-(substituted tetrazolyl thiomethyl)cephalosporins
08/25/1981US4286088 Cleaving the amide bond, protection of carboxy group with acetyl or propionyl halide
08/25/1981US4285941 Antibiotics
08/25/1981US4285940 Cephalosporin derivatives, and antibacterial drugs comprising said derivatives
08/25/1981US4285939 Antibiotics
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