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)
04/1991
04/23/1991CA1283405C Crystalline hydrate of oral cephalosporin and its composition
04/23/1991CA1283404C Cephalosporin compounds, processes for their preparation and antibacterial agents
04/18/1991WO1991004977A1 Novel 2-spirocyclopropyl cephalosporin sulfone derivatives and processes for the preparation thereof
04/18/1991CA2067803A1 2-spirocyclopropyl cephalosporin sulfone derivatives and processes for the preparation thereof
04/17/1991WO1991005788A1 Conversion of penicillins and cephalosporins to 1-(s)-sulfoxides
04/17/1991CN1050717A Cephalosporin derivatives
04/17/1991CA2067745A1 Conversion of penicillins and cephalosporins to 1-(s)-sulfoxides
04/16/1991US5008260 Cephem derivatives
04/16/1991US5008259 Antibiotics active against strains of Pseudomonas and stable to beta-lactamase
04/16/1991US5008258 Cephalosporin derivatives
04/16/1991CA1283096C Antibacterial compounds
04/10/1991EP0421219A2 Process for the preparation of 7-amino-3-[(Z)-1-propenyl-1-yl]-3-cephem-4-carboxylic acid
04/09/1991US5006649 3-propenylcephem derivative
04/04/1991CA2026597A1 Process for the preparation of 7-amino-3-[ (z)-1-propen-1-yl] -3-cephem-4-carboxylic acid
04/03/1991EP0420608A2 Cephalosporin derivatives
04/03/1991EP0420543A2 Cephalosporin compounds
04/02/1991CA1282408C Process for preparing cephalosporin intermediates
04/02/1991CA1282407C Crystalline cephem carboxylic acid addition salt
04/02/1991CA1282406C Cephalosporin antibiotics
04/02/1991CA1282331C Pharmaceutical composition containing cefuroxime axetil
03/1991
03/30/1991CA2026419A1 Cephalosporin compounds
03/27/1991CA2026204A1 Cephalosporin derivatives
03/26/1991US5003073 Process for producing cephalosporin antibiotics, and novel intermediates for use in such process and their production
03/26/1991US5003064 Cefadroxil Monohydrate
03/20/1991EP0418020A2 Cephalosporinderivatives, process for their preparation and pharmaceutical compositions
03/20/1991CN1050023A Process for preparation of cephalosporin derivative
03/19/1991US5001121 Cephalosporin compounds and pharmaceutical compositions thereof
03/19/1991CA1281712C Cephalosporin derivatives and antibiotics containing the same
03/13/1991EP0416814A2 Cephalosporin compounds, process for their preparation, pharmaceutical compositions and intermediates
03/13/1991EP0416810A2 Cephalosporin compounds, process for their preparation, pharmaceutical compositions and intermediates
03/13/1991EP0416410A1 Piperaziniocephalosporins
03/12/1991CA1281318C Cephem derivatives
03/12/1991CA1281317C Process for the preparation of cephalosporin derivatives useful as antibiotics
03/12/1991CA1281316C TETRAZOLYL DERIVATIVES OF .beta.-LACTAMS USEFUL AS ELASTASE INHIBITORS
03/12/1991CA1281315C .beta.-LACTAM ANTIBIOTICS, PROCESS FOR THEIR PREPARATION AND THEIR USE AS AND INMEDICAMENTS
03/05/1991CA2024396A1 Compounds
02/1991
02/21/1991WO1990011782A3 Immunoconjugates and prodrugs and their use in association for drug delivery
02/19/1991US4994567 Purification by recovering from solution by roller drying
02/19/1991US4994454 Antibiotic intermediates
02/19/1991CA1280409C Method of producing cephem compounds
02/19/1991CA1280408C .beta.-LACTAM ANTIBIOTICS, PROCESSES FOR THEIR PREPARATION AND THEIR USE AS MEDICAMENTS
02/13/1991EP0412763A2 Cephalosporins, processes for their preparation, pharmaceutical compositions containing them and intermediates therefor
02/12/1991US4992541 Antiinflammatory, antidegenerative agents
02/12/1991US4992431 Cephalosporins
02/12/1991CA2022664A1 Antibiotic compounds
02/06/1991EP0411929A1 A process for the preparation of 1,1-dioxo-7-substituted cephems
02/05/1991CA1279868C 3-(substituted)propenylaminothiazolylcephalosporanic acids and esters thereof
02/02/1991CA2022344A1 Process for the preparation of 1,1-dioxo-7-substituted cephems
01/1991
01/30/1991CN1048856A Cephalosporin derivatives and processes for their preparation
01/29/1991US4988816 Novel 3-acetoxymethyl-7-(iminoacetamido)-cephalosporanic acid derivatives
01/29/1991US4988687 Cephalosporin derivatives, and antibacterial agents
01/29/1991US4988686 Cephem compounds and anti-bacterial agent
01/29/1991US4988685 Cephalosporins derivatives
01/24/1991WO1991000865A1 A novel stable form of cephradine, process for its production and intermediates used therein
01/23/1991EP0409521A2 Improved enzymatic oxidation of ceph C to glutaryl-7-amino-cephalosporanic acid
01/23/1991EP0409164A2 Phenacylpyridiniothiocephalosporins
01/23/1991EP0409081A1 Beta-Lactam Derivatives
01/23/1991EP0409055A1 Cephalosporin derivatives and processes for their preparation
01/23/1991CN1048706A 3-substituted vinyl cephalosporin derivatives and process for preparing same
01/22/1991US4987235 Intermediates for cephalosporins
01/22/1991CA1279311C Crystalline cephalosporin monohydrate
01/16/1991EP0408034A1 3-Substituted vinyl cephalosporin derivatives
01/16/1991CA2021127A1 Cephalosporin derivatives and processes for their preparation
01/15/1991US4985555 Cephem compounds
01/15/1991US4985554 Process for the preparation of 3-exomethylene cepham derivatives
01/14/1991CA2021025A1 3-substituted vinyl cephalosporin derivatives
01/08/1991US4983732 Cehmical intermediates for beta-lactam antibiotics
01/02/1991CA1278568C Salts of amino-beta-lactamic acids and process for the preparation thereof
12/1990
12/26/1990CN1048042A Crystalline cephem acid addition salts and processes for their prepn.
12/25/1990US4980464 Method for production of cephalosporin compounds
12/19/1990EP0402806A1 Crystalline cephem-acid addition salts and process for preparing them
12/19/1990CN1047938A Supporting structure for heater of electron gun
12/18/1990US4978752 Stable, water soluble
12/18/1990CA1277978C Antibacterial compounds, there production and use
12/18/1990CA1277977C Beta-lactam antibiotics
12/11/1990US4977256 Reacting with zinc powder in buffer
12/11/1990CA1277667C2 Thioester acylating agents for the production of cephalosporins
12/11/1990CA1277659C Tricyclic pyridine derivatives
12/05/1990EP0400805A1 Cephalosporin compounds and their use
11/1990
11/28/1990EP0399094A2 Improved process for the preparation of ceftriaxone
11/28/1990CN1047294A Process for 3-exomethylenecepham sulfoxide esters
11/27/1990US4973699 Cephem compounds and processes for preparation thereof
11/27/1990US4973685 Heteroannellated phenylglycine-β-lactam antibiotics
11/27/1990US4973684 Broad spectrum antibiotics
11/27/1990CA1276929C Cephalosporin antibacterial agents
11/22/1990EP0398670A2 Process for 3-exomethylenecepham sulfoxide esters
11/20/1990US4971963 Bactericide
11/20/1990US4971962 Antibiotics for treatment of diseases resistant to penicillins
11/20/1990US4971961 Antibiotics as bactericides against pseudomonas
11/14/1990EP0397511A2 Novel cephalosporin compounds and processes for preparation thereof
11/14/1990EP0397212A1 Process for preparing cephalosporin compounds
11/13/1990US4970305 Crystalline dihydrochloride of cephalosporin derivative and a method for preparation thereof
11/13/1990CA1276140C Cephalosporin derivatives
11/13/1990CA1276139C2 Cephalosporins, processes for producing the same, antibacterial agent containing the same, intermediates thereof and process for producing the intermediates
11/06/1990CA1276013C Cephalosporin derivatives
10/1990
10/31/1990EP0395219A2 Cephalosporins and their homologues, process for their preparation and pharmaceutical compositions
10/30/1990US4966900 Cephalosporin β-lactam compound and medicinal composition
10/25/1990CA2015283A1 Cephalosporin compounds and their use
10/24/1990EP0393150A1 Zinc ceftiofur complexes
10/23/1990US4965358 Chemical intermediate for penicillins and cephalosporins
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