Patents
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Patents for C07D 205 - Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom (6,868)
12/1984
12/18/1984CA1179675A1 7-oxo-1-azabicyclo ¬3,2,0| heptene-2-derivatives
12/11/1984CA1179339A1 O-SULFATED .beta.-LACTAM HYDROXAMIC ADIDS
12/11/1984CA1179327A1 2-penem compounds and a method for preparing them
12/05/1984EP0127541A2 Salts of amino-beta-lactamic acids and process for the preparation thereof
12/05/1984EP0127177A2 [[(3-Acylamino-2-oxo-1-azetidinyl)oxy]methyl]phosphinic acids
12/05/1984EP0126923A2 Process for the preparation of derivatives of 4-substituted acetoacetic acid
12/05/1984EP0126780A1 Carbapenem compound
11/1984
11/28/1984EP0126709A1 Process for the preparation of optically active azetidinones
11/28/1984EP0126587A1 Carboxylic thio-pyrrolidinyl beta-lactam compounds and production thereof
11/27/1984US4485110 β-Lactam compounds, and use
11/21/1984EP0125803A2 Pharmaceutically active dihydropyridines
11/21/1984EP0125714A1 Preparation of 1-substituted azetidin-3-ol and acid halid thereof
11/20/1984US4483797 (S)-3-Isocyanato-2-oxo-1-azetidinesulfonic acids
11/14/1984EP0125208A1 Amino-lower-alkyl-penem derivatives, process for their preparation, pharmaceutical compositions containing them and their use
11/14/1984EP0125207A1 2-Tetrazolylpropyl-2-penem derivatives, process for their preparation, pharmaceutical compositions containing them and their use
11/13/1984US4482491 Chemical intermediates for cephalosporin
11/07/1984EP0124123A1 3-Acylamino-1-sulfonylaminocarbonylmethoxy-2-azetidinones
10/1984
10/31/1984EP0123444A1 4-Substituted-2-azetidinone compound, process of producing the compounds, and medicaments containing the compounds
10/31/1984EP0123442A1 Improvements in or relating to a process for producing beta-lactam compounds
10/30/1984US4479900 1-Carbalkoxyalkyl-3-aryloxy-4-(2'-carboxyphenyl)-azetidin-2-ones
10/17/1984EP0122002A1 Process for preparing azetidinone derivatives
10/10/1984EP0121502A1 Novel penem compounds, pharmaceutical compositions containing them, processes for their preparation
10/09/1984CA1175847A1 Acetyl-azetidinones dicarboxylates
10/02/1984US4474793 7-Oxo-4-thia-1-aza[3,2,0]heptane and 7-oxo-4-thia-1-aza[3,2,0]hept-2-ene derivatives
09/1984
09/25/1984US4473502 Synthesis of thienamycin via (3SR, 4RS)-3-[1 (SR)-hydroxyethyl]-2-oxo-4-azetidineacetic acid
09/18/1984US4472576 Catalytic cyclization of 4-(3'-carboxy-3'-diazo-2'-oxapropyloxy-3-3-acylaminoazetidin-2-one
09/18/1984US4472309 Antimicrobial
09/18/1984US4472300 Antimicrobial
09/12/1984EP0118196A1 Process for the manufacture of highly crystalline sodium cefoperazone
09/12/1984EP0117875A1 Process for preparing azetidinone derivatives
09/04/1984CA1173841A1 3-phenoxy-1-azetidinecarboxamides
09/04/1984CA1173837A1 4-fluoroazetidinones
08/1984
08/29/1984EP0117053A1 Azetidinone derivatives
08/29/1984EP0116854A2 Process for the preparation of optically unitary 2-azetidinone derivatives
08/22/1984EP0116432A2 Improvements in or relating to N-(substituted-methyl)-azetidin-2-ones
08/21/1984US4467107 Intermediates for thienamycin
08/21/1984US4466977 N-[2-Amino(oxy- or thia- group-substituted-cycloaliphatic)]benzeneacetamides and -benzamide analgesics
08/21/1984US4466914 Process for the conversion of primary and secondary alcohols to their corresponding thiols and thiol esters
08/14/1984US4465842 Preparation of N-benzylimides
08/14/1984US4465632 Process for preparing 1-6-and 2-substituted-1-carba-2-penem-3-carboxylic acids
08/08/1984EP0115308A2 2-Unsaturated alkylthio-pen-2-em-3-carboxylic acids and process for preparing substituted 2-thioxopenams and 2-substituted thiopenems
08/07/1984US4464299 Antibacterial carbapenem compounds
08/01/1984EP0114729A1 Process for preparing azetidinone derivatives
08/01/1984EP0114706A1 2-Acetidinylacetic acid,its preparation,compositions containing it,and method of sterilising the anthers of a plant
07/1984
07/25/1984EP0114128A1 3-Amino-2-oxo-azetidine derivatives containing in position 1 a nitrogen heterocyclic radical, process for their preparation, their use as therapeutical agents and intermediates for their preparation
07/25/1984EP0114079A1 Arylsulphonyl azetidine compounds, their preparation and their use as intermediates
07/24/1984US4461727 4-Acylthioazetidinone intermediates for antibacterial agents
07/24/1984US4461726 Desulfurization of penicillins to prepare azetidinones
07/17/1984US4460507 Process for the preparation of thienamycin
07/11/1984EP0113101A1 6-(1-Hydroxyethyl)-2-SR8-1-methyl-1-carbadethiapen-2-em-3-carboxylic acid esters
07/03/1984US4458070 Storage stability
06/1984
06/27/1984EP0112283A1 Heterocyclyl-thio compounds, process for their preparation, pharmaceutical compositions containing them and their use
06/26/1984US4456753 Controlled addition of acetone to water/acetone/sodium cefoperazone solution
06/26/1984US4456467 Plant growth regulator
06/26/1984CA1169870A2 3-phenoxy-1-azetidines
06/20/1984EP0111326A1 Process for the manufacture of chiral azetidinones
06/13/1984EP0110826A1 6-Hydroxy lower alkyl penem compounds, process for their preparation, pharmaceutical compositions containing them and their use
06/13/1984EP0110280A1 Process for the production of penem compounds
06/13/1984EP0110224A2 Benzoylthio compounds, their manufacture and use as medicines
06/12/1984US4454332 Intermediate for synthesis of thienamycin
05/1984
05/30/1984EP0109816A1 N-substituted-2-(R)-(sulfinic acid)-3-(S)-(acylamido)-4-oxo-azetidines and process
05/23/1984EP0109362A1 Hetereocyclic compounds, process for their preparation, pharmaceutical compositions containing them and their use
05/23/1984EP0109044A1 Penems, pharmaceutical compositions containing them, process for preparing them
05/23/1984EP0108994A1 Process for preparation of optically active (4R)-substituted monocyclic beta-lactam compounds
05/16/1984EP0108602A1 N-(2-aminocycloalkyl)benzamide and benzeneacetamide derivatives
05/15/1984US4448976 Using 3-azido-4-(cyano or carbomethoxy)-2,3,4,6-tetradeoxy-d-arabino-hexose trimethylene dithioacetal
05/15/1984US4448782 Bactericides
05/15/1984US4448720 Chemical intermediates for penicillins and cephalosporins
05/08/1984US4447608 Antitumor agents
05/08/1984US4447360 Intermediates for thia-aza compounds with a β-lactam ring
05/01/1984US4446146 β-Lactam containing compounds, their preparation and use
05/01/1984CA1166640A1 2-oxoazetidine derivatives and production thereof
04/1984
04/25/1984EP0106652A1 Beta-lactam compounds and production thereof
04/25/1984EP0106489A2 Antibacterial agents
04/24/1984US4444771 Azeto triazolo pyrazine β-lactam antibacterial agents
04/24/1984US4444685 Stereospecific synthesis of thienamycin from penicillin
04/18/1984EP0105484A2 3-Propionylsalicyclic acid derivatives and process for the preparation of the same
04/17/1984US4443599 8-Oxo-3-oxa-1-azabicyclo[4.2.0]octanes containing a chiral center
04/17/1984US4443463 (5R,6S,8R)-6-(1-Hydroxyethyl)-2-(hydroxyalkylthio)-penem-3-carboxylates
04/17/1984US4443374 Process for preparing (3S)-3-[[(2-amino-4-thiazolyl)[(1-carboxy-1-methylethoxy)imino]-acetyl]amino]-2-oxo-1-azetidinesulfonic acid, and 4-substituted derivatives
04/17/1984US4443372 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones as plant growth regulators
04/03/1984US4440683 Cyclization to form cephem ring and azetidinone intermediates therefor
04/03/1984US4440682 Stereospecific synthesis of isocephalosporins and 2-oxa isocephalosporins
03/1984
03/21/1984EP0103496A1 Acylalkylaminocarbonyl substituted amino and imino acid compounds
03/15/1984WO1984000960A1 Process for preparing azetidinone derivatives
03/14/1984EP0102893A1 A novel production of 1-oxacephams
03/14/1984EP0102740A1 N-formyl and n-hydroxymethyl-3-phenoxy-1-azetidinecarboxamides and their preparation and use
03/13/1984US4436661 3-Substituted bicyclic azetidinone derivatives
03/13/1984US4436596 Electrolytic reduction of a cephalosporin
03/07/1984EP0102239A1 Azetidinone derivatives, a process for their preparation and their use as intermediates in the preparation of carbapenem antibiotics
03/07/1984EP0102194A1 3-Phenoxy-1-azetidinecarboxamides and their use and preparation
03/06/1984US4435413 Antibacterial
03/06/1984US4435412 Bactericides
03/06/1984US4435322 Antinypoxic azetidine compounds
03/06/1984US4435321 Bactericides and intermediates for 2- or 3-cephems
02/1984
02/29/1984EP0101598A1 Beta-lactams
02/28/1984US4434287 Cephalosporin derivatives
02/28/1984US4434099 Antianaphylactic, thienamycin intermediates
02/22/1984EP0101170A1 Process for the manufacture of sodium cefoperazone
02/21/1984US4432901 Chemical intermediate for peniciulins, thienamycins
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