| 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) |
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| 08/24/1993 | CA1321580C Cephem and cepham compounds and processes for preparation thereof |
| 08/19/1993 | WO1993016084A1 Process for the purification of a 3-cephem-4-carboxylic acid derivative |
| 08/19/1993 | WO1993016043A1 β-LACTAM COMPOUND AND CEPHEM COMPOUND, AND PRODUCTION THEREOF |
| 08/19/1993 | CA2089540A1 Ester cleavage process for use with .beta.-lactams |
| 08/18/1993 | EP0555769A2 Process for the preparation of Cephem-Prodrug-esters |
| 08/11/1993 | EP0346465B1 1-carboxy-1-vyniloxyiminoaminothiazole cephalosporing derivatives and process for their preparation |
| 08/10/1993 | US5234920 Bactericides |
| 08/05/1993 | WO1993015084A1 Novel cephalosporin compounds |
| 08/04/1993 | EP0554004A2 Cephem compounds and antibacterial agents |
| 08/04/1993 | EP0553792A2 Process for the preparation of the disodium salt hemiheptahydrate of ceftriaxone |
| 08/04/1993 | EP0553741A2 Fluorogenic and chromogenic betalactamase substrates |
| 08/03/1993 | US5233035 Microbiocides |
| 08/03/1993 | US5232918 Cephalosporin derivatives |
| 07/29/1993 | CA2088173A1 Process for the preparation of ceftriaxon disodium salt hemiheptahydrate |
| 07/21/1993 | CN1074484A Novel bioprocesses for preparing 7-ACA and 7-ADAC |
| 07/20/1993 | US5229509 Simplification of multistage synthesis, improved protecting group |
| 07/14/1993 | EP0551034A2 Cephalosporins having in position 7 a benzyloxyimino radical substitute, process for their preparation and their use as medicaments |
| 07/14/1993 | EP0550775A1 Cephalosporin derivatives |
| 07/08/1993 | WO1993013109A1 Cephalosporin derivative |
| 07/08/1993 | WO1993013108A1 Substituted 3-cephem compounds as antibacterial agents |
| 07/06/1993 | US5225406 Antibiotics |
| 06/29/1993 | US5223496 Cephalosporin antibiotics |
| 06/29/1993 | CA1319682C Process for the preparation of new oximes derivated from 7-aminothiazolylacetamidocephalosporanic acid |
| 06/24/1993 | WO1993012250A1 AN IMPROVED METHOD FOR THE PREPARATION OF CERTAIN β-LACTAM ANTIBIOTICS |
| 06/23/1993 | EP0547646A2 Crystalline form of a cephalosporin antibiotic |
| 06/23/1993 | CN1073444A Cephalosporin compounds and process for preparing the same |
| 06/22/1993 | US5221739 Acetylation of 3-hydroxymethyl cephalosporins |
| 06/16/1993 | CN1073177A New cephalosporins containing in position 7 a substituted benzyloxyimino radical, their preparation process and their use as medicaments |
| 06/16/1993 | CN1021226C Preparation for acyl derivatives |
| 06/15/1993 | US5219848 Cephem compounds |
| 06/13/1993 | CA2085137A1 New cephalosporins comprising a 7-substituted benzyloxyimino group, process of preparation thereof, their application as medication |
| 06/10/1993 | WO1993011132A1 Method of preparing the antibiotic cefaclor |
| 06/10/1993 | WO1993011131A1 Cephalosporin compounds |
| 06/09/1993 | EP0544958A1 Cephalosporin compounds and processes for preparing the same |
| 06/06/1993 | CA2057129A1 Cephalosporin compounds and processes for preparing the same |
| 06/02/1993 | EP0544166A2 Cephalosporinderivatives |
| 06/02/1993 | EP0543819A1 Cephalosporin compounds and processes for preparation thereof |
| 06/02/1993 | CN1072684A Cephalosporin derivatives |
| 06/01/1993 | US5215982 Cephem compounds |
| 05/27/1993 | WO1993010123A1 Process for the preparation of cephem derivatives |
| 05/27/1993 | CA2083345A1 Cephalosporin derivatives |
| 05/25/1993 | US5214048 Oxetanocins |
| 05/25/1993 | US5214037 Antibiotic, bactericide |
| 05/19/1993 | CN1020732C Preparation method for substituted vinylcephalosporins. |
| 05/12/1993 | EP0540609A1 Cephalosporins and homologues, preparations and pharmaceutical compositions |
| 05/12/1993 | EP0540606A1 Cephalosporins and homologues, preparations and pharmaceutical compositions |
| 05/12/1993 | CN1020611C Process for preparation of cephem hydrochloride |
| 05/12/1993 | CA2082472A1 Crystalline form of a cephalosporin antibiotic |
| 05/11/1993 | US5210080 Cephem compounds |
| 05/05/1993 | EP0540210A1 Novel bioprocesses for preparing 7-aca and 7-adac |
| 04/29/1993 | WO1993008287A1 Novel bioprocesses for preparing 7-aca and 7-adac |
| 04/28/1993 | CN1071428A Pyrroliaylthiocarbapenem derivatives |
| 04/27/1993 | US5206360 Intermediates for cyclobutenedione substituted (1-carba)cephalosporin compounds |
| 04/21/1993 | EP0537255A1 PROCESS FOR PREPARATION OF $g(b)-LACTAMS |
| 04/20/1993 | US5204458 Process for preparing cephem derivatives |
| 04/13/1993 | US5202315 Antiboiotic |
| 04/13/1993 | CA1316171C Cephalosporin derivatives |
| 04/06/1993 | US5200404 Bactericides |
| 03/31/1993 | CN1070406A Preparation of cephalosporin antibiotic using syn-isomer of thiazolyl intermediate |
| 03/31/1993 | CN1070405A Diastereoisomer of 3-cephem-4-carbonic acid-1-(isopropxycarbonyloxy) ethylester and process for preparing same |
| 03/31/1993 | CN1070398A Process for preparation of cephalosporin antibiotic |
| 03/30/1993 | CA1315274C Process for the preparation of new oxime derivatives of 3-substituted 7-aminothiazolylacetamidocephalosporanic acid |
| 03/24/1993 | EP0533047A1 Preparation of a cephalosporin antibiotic using the synisomer of a thiazolyl intermediate |
| 03/17/1993 | EP0531981A1 Process for the preparation of a cephalosporin antibiotic |
| 03/17/1993 | EP0531875A2 Diastereomers of the 3-cephem-4-carboxylic acid-1-(-isopropoxycarbonyloxy)ethylester and process for their preparation |
| 03/17/1993 | EP0233271B1 Process for preparing cephalosporin intermediates |
| 03/17/1993 | CN1020104C Process for preparing cephene device |
| 03/16/1993 | US5194604 Reacting a novel substrate with a beta lactam and a base |
| 03/16/1993 | US5194433 Improved effectiveness against resistant bacteria |
| 03/16/1993 | US5194432 Cephem compounds |
| 03/11/1993 | CA2077836A1 Process for the preparation of a cephalosporin antibiotic |
| 03/11/1993 | CA2077780A1 Preparation of a cephalosporin antibiotic using the syn-isomer of a thiazolyl intermediate |
| 03/10/1993 | EP0530268A1 Process for the preparation of 7-alpha-alkoxycephem derivatives. |
| 03/03/1993 | EP0529081A1 HALOGENATED $g(b)-LACTAM COMPOUND AND PRODUCTION OF 3-HYDROXYCEPHEM DERIVATIVE THEREFROM |
| 03/03/1993 | EP0528985A1 Cephalosporin esters which are useful as antibiotics |
| 03/03/1993 | EP0528941A1 Process for preparing cephalexin monohydrate |
| 02/24/1993 | EP0528678A1 A pyrrolidylthiocarbapenem derivative |
| 02/24/1993 | EP0528343A2 New process for the production of cephalosporines and novel intermediates in this process |
| 02/23/1993 | US5189157 Antibacterial cephalosporin compounds |
| 02/17/1993 | EP0527686A1 New cephalosporin derivatives |
| 02/16/1993 | US5187160 7-(2-(aminothiazol-4-yl)-2-alkoxyiminoacetamido),3-(2 -hydroxyalkylpyrazol-2-ium-2-yl)methyl)-3-cephem carboxylate; microbiocides |
| 02/16/1993 | CA1313654C Cephalosporins containing a substituted vinyl radical in 3; process for preparing the same; their use as drugs; compositions containing them and new intermediates produced |
| 02/04/1993 | WO1993002085A1 Process for the preparation of cephalosporins intermediates |
| 02/03/1993 | EP0525832A1 Substituted 1,2,3- thiadiazole-4-thiolates |
| 02/03/1993 | EP0525057A1 Antimicrobial quinolonyl lactams |
| 02/02/1993 | US5183929 From tert-butanol and diketene in presence of a 4-aminopyridine; chemical intermediate for cephalosporins |
| 01/26/1993 | US5182383 Ceftazidime |
| 01/20/1993 | EP0523585A2 Improvements in or relating to beta lactam production |
| 01/13/1993 | EP0521887A1 Cephalosporins, process for their preparation and pharmaceutical compositions containing them |
| 01/07/1993 | WO1993000346A1 Cephalosporin derivatives |
| 01/06/1993 | CN1067658A Cephem compounds |
| 01/06/1993 | CN1067657A Process for preparing b-lactam compound |
| 12/30/1992 | EP0520880A1 Cephalosporines having a 2-thia cephem ring, process for their preparation, pharmaceutical compositions containing them, their application as medicaments and intermediates |
| 12/26/1992 | CA2072031A1 Cephalosporins having a 2-thia cephem nucleus, method of preparation, their use as therapeutic agents, pharmaceutical compositions containing them and new intermediaries obtained |
| 12/23/1992 | WO1992022556A1 Novel 3-fused pyridiniummethyl cephalosporins |
| 12/23/1992 | CA2111459A1 Novel 3-fused pyridiniummethyl cephalosporins |
| 12/16/1992 | CN1067055A Crystallizing acid addition salt of 3-cephem-4-carboxylic acid-1-(2,2-dimethylpropionyloxy) ethyl ester non-emantiomorph |
| 12/16/1992 | CN1019494B Process for the production of cephem derivatives and intermediates there of |
| 12/16/1992 | CN1019493B Process for producing cephalsporin derivatives |
| 12/15/1992 | US5171854 Substituted vinylcephalosporins |