| Patents for C07D 505 - Heterocyclic compounds containing 5-oxa-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula: , e.g. oxacephalosporins; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring (556) |
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| 09/18/1984 | US4472576 Catalytic cyclization of 4-(3'-carboxy-3'-diazo-2'-oxapropyloxy-3-3-acylaminoazetidin-2-one |
| 09/18/1984 | CA1174676A1 1-oxa-beta-lactam antibiotics |
| 09/18/1984 | CA1174675A1 Bis-tetrazolemethyl substituted beta-lactam antibiotics |
| 08/29/1984 | EP0117143A2 Cephalosporin hydroxamic acids, their preparation, antibacterial formulations comprising the same, and their use in combating bacteria |
| 08/08/1984 | EP0115405A2 Process for the preparation of beta-lactam compounds |
| 08/02/1984 | WO1984002911A1 beta-LACTAM ANTIBACTERIAL AGENTS |
| 08/01/1984 | EP0114751A2 Beta-lactam antibacterial agents |
| 07/25/1984 | EP0113965A2 Process for the preparation of cephalosporin derivatives |
| 07/03/1984 | US4458072 Acyl derivatives |
| 07/03/1984 | US4458071 Oxacephalosporin antibiotics |
| 06/27/1984 | EP0112049A1 Process for the preparation of beta-lactam compounds |
| 06/20/1984 | EP0111421A1 Oxacephalosporin derivatives, their preparation and use |
| 06/19/1984 | US4455306 Method for concentrating β-lactam antibiotic solution |
| 05/23/1984 | EP0109302A1 Process for 1-oxa-beta-lactams |
| 05/15/1984 | US4448720 Chemical intermediates for penicillins and cephalosporins |
| 05/09/1984 | EP0107928A1 Vinylthioacetamido oxacephalosporin derivatives, and intermediates therefor, their preparation, formulations containing the same and their antibacterial use |
| 04/17/1984 | US4443598 1-Oxadethiacepham compounds |
| 03/20/1984 | US4438114 Oxacephalosporins |
| 03/14/1984 | EP0102893A1 A novel production of 1-oxacephams |
| 02/01/1984 | EP0099580A1 New 1-oxa-1-dethia-cephalosporin derivatives |
| 01/18/1984 | EP0098615A1 1-Oxadethiacephalosporin compound and antibacterial agent containing the same |
| 01/18/1984 | EP0098609A2 Novel cephalosporin compounds |
| 01/18/1984 | EP0098545A1 Epimerization of malonic acid esters |
| 01/18/1984 | EP0098478A1 Process for the preparation of 7-amino-1-dethia-1-oxa-3-hydroxymethyl-cephem-4-carboxylic acids |
| 11/22/1983 | US4416880 β-Lactam antibiotics and compositions containing the same |
| 11/02/1983 | EP0092722A1 Beta-lactam antibiotics, process for their preparation and their use as medicines |
| 10/04/1983 | US4407750 Unsymmetrical azetidinone aldehyde disulfides and process |
| 08/16/1983 | US4399135 Antibiotics |
| 08/04/1983 | WO1983002614A1 5,6-cis-carbapenem-3-carboxylic acid derivatives and process for their preparation |
| 07/19/1983 | US4394375 And oxacephalosporins |
| 07/19/1983 | US4394313 Symmetrical azetidinone aldehyde disulfides and process |
| 07/05/1983 | US4391975 Process for 1-oxacephem derivatives |
| 06/29/1983 | EP0082648A2 Cephalosporin derivatives |
| 06/28/1983 | CA1148949A1 1-oxadethiacephalosporin derivatives and the production thereof |
| 06/22/1983 | EP0081824A1 Processes for the production of antibiotic 1-oxadethiacephalosporins |
| 05/17/1983 | CA1146536A1 Cephalosporin reduction process |
| 04/13/1983 | EP0076463A2 Beta-lactam compound and a pharmaceutical composition containing the same |
| 04/06/1983 | EP0075805A1 Beta-lactam compound and a pharmaceutical composition containing the same |
| 03/30/1983 | EP0075169A1 Beta-lactam antibiotics, process for their preparation and their use as medicines |
| 03/30/1983 | EP0075110A2 Cephalosporin derivatives, process for their preparation, pharmaceutical compositions containing them and intermediates |
| 03/30/1983 | EP0075104A2 Cephalosporin derivatives, process for their preparation, pharmaceutical compositions containing them and intermediates |
| 03/30/1983 | EP0075095A2 Cephalosporin derivatives, process for their preparation, pharmaceutical compositions containing them and intermediates |
| 03/23/1983 | EP0074599A1 5,6-cis-Carbapenem derivatives, their production and use |
| 03/17/1983 | WO1983000867A1 5,6-cis-carbapenem-3-carboxylic acid derivatives and process for their preparation |
| 03/16/1983 | EP0074316A2 A process for the preparation of 3-substituted 7-aminocephalosporanic acids |
| 03/15/1983 | US4376770 Oxacephalosporins |
| 03/09/1983 | EP0073451A2 Carbapenam compound and processes for the preparation thereof |
| 02/23/1983 | EP0072756A1 Cephalosporin derivatives and process for their preparation |
| 02/23/1983 | EP0072755A1 Cephalosporin derivatives, their preparation and pharmaceutical compositions containing them |
| 02/23/1983 | EP0072608A2 Process for the preparation of cephalosporin derivatives |
| 02/09/1983 | EP0071395A1 Beta-lactam antibacterial agents |
| 02/09/1983 | EP0071370A2 Cephalosporin derivatives, process for their preparation and pharmaceutical compositions containing them |
| 02/01/1983 | US4371532 Malonamidooxadethiacephem compounds |
| 01/25/1983 | US4370478 Oxacephalosporins |
| 01/18/1983 | US4369315 Oxacephalosporins |
| 01/18/1983 | US4369314 Oxacephalosporins |
| 01/18/1983 | US4369312 Method of producing oxo-containing azetidinone compounds |
| 01/04/1983 | CA1138867A1 Antibiotic crystalline epimer |
| 12/28/1982 | US4366316 From oxazolinoazetidinone and acid |
| 11/09/1982 | US4358447 7-N-Heterocyclyl cephalosporins |
| 10/12/1982 | CA1133468A1 Process for preparation of penicillin and cephalosporin imino halides |
| 09/28/1982 | CA1132549A1 INVERSION OF THE 3 .alpha.-AMINO GROUP ATTACHED TO THE .beta.-LACTAM RING |
| 09/21/1982 | US4350694 Oxacephalosporins/; |
| 08/17/1982 | CA1129870A1 Azetidine derivatives |
| 08/03/1982 | US4342760 Cephalosporin analogues |
| 08/03/1982 | US4342685 Inversion of the 3 α-amino group attached to the β-lactam ring |
| 07/07/1982 | EP0055562A2 Cephalosporin derivatives |
| 06/30/1982 | EP0055137A2 Method for concentrating beta-lactam antibiotic solution |
| 06/15/1982 | US4335240 Process for cyclization |
| 06/09/1982 | EP0053541A1 Oxacephalosporins and their preparation |
| 06/08/1982 | US4334079 By esterification of a salt of a phenylacetic acid using a phase t |
| 06/02/1982 | EP0053073A1 Oxacephalosporins and their preparation |
| 06/02/1982 | EP0053072A1 Oxacephalosporins and their preparation |
| 06/02/1982 | EP0053071A1 Oxacephalosporins, their preparation and therapeutic agents containing them |
| 05/25/1982 | CA1124236A1 Crystallization process |
| 05/12/1982 | EP0051457A2 Process for preparation of substituted benzyl esters |
| 04/21/1982 | EP0049855A2 Cephalosporin derivatives, process for their preparation, pharmaceutical compositions containing them and intermediates for their preparation |
| 04/20/1982 | US4325951 1-Oxadethiacephalosporin derivatives and antibacterial use thereof |
| 04/14/1982 | EP0049448A2 Beta-lactam antibiotics, process for their preparation and compositions containing them |
| 04/06/1982 | US4323567 Bactericides |
| 03/24/1982 | EP0048166A1 Bicyclic 1-oxa-beta-lactam compounds, their preparation and pharmaceutical formulations containing them |
| 03/24/1982 | EP0048165A1 Bis-tetrazolemethyl substituted beta-lactam antibiotics, their preparation and pharmaceutical formulations containing them |
| 01/13/1982 | EP0043546A2 7-Oxo-cephalosporins and 6-oxo-penicillins, their analogues and process for their preparation |
| 12/23/1981 | EP0042232A2 Cephalosporin derivatives, processes for their preparation and compositions containing them |
| 12/08/1981 | US4304774 Bis-tetrazolmethyl substituted β-lactam antibiotics |
| 11/24/1981 | US4302391 Oxacephalosporin antibiotic intermediates |
| 11/17/1981 | US4301282 1-Oxa-β-lactam antibiotics |
| 11/03/1981 | CA1111856A1 Azetidinone derivatives and production thereof |
| 11/03/1981 | CA1111854A1 Oxazolinoazetidinylbutyric acid derivatives |
| 10/13/1981 | CA1110624A1 Cephalosporin analogues and processes for the preparation thereof |
| 10/06/1981 | US4293495 Symmetrical azetidinone aldehyde disulfides and process |
| 10/06/1981 | US4293493 Azetidinone alcohol disulfides and process for cyclization |
| 09/29/1981 | CA1109873A1 O-2-isocephem antibacterial agents and processes and intermediates for their production |
| 08/11/1981 | US4283531 Hydroxyalkylation |
| 08/11/1981 | US4283333 α-[4-Oxoazetidin-1-yl]-acetic acid compounds useful as intermediates in preparing 1-oxadethiacephalosporins |
| 07/14/1981 | US4278793 Cephem derivative |
| 06/09/1981 | US4272439 6-(Substituted-hydroxymethylene penams) |
| 06/02/1981 | US4271296 Oxazolines |
| 06/02/1981 | US4271295 Oxazolines |
| 06/02/1981 | US4271159 7-N-Heterocyclyl-2-substituted 1-oxadethia-cephalosporins |