| Patents for C07D 499 - Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula: , e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring (3,448) |
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| 07/31/1990 | US4945159 Penicillin, cephalosporins |
| 07/31/1990 | CA1272189A1 Process for the preparation of sodium amoxycillin |
| 07/24/1990 | US4943569 B-lactam compounds |
| 07/17/1990 | US4942229 Dehydrobromination to form esters, phase transfer agents |
| 07/17/1990 | CA1271742A1 Penem derivatives |
| 07/10/1990 | US4940788 Process for preparing azetidinones |
| 06/28/1990 | WO1990006928A1 6-(1-carbamoyl-1-hydroxymethyl)penicillanic acid derivatives |
| 06/26/1990 | CA1270814A1 6-(1-acyl-1-hydroxymethyl)penicillanic acid derivatives |
| 06/20/1990 | EP0373388A2 Penem derivatives and process for their preparation |
| 06/12/1990 | US4933444 Reacting halo-substituted compound with heterocycle in solvent |
| 06/12/1990 | US4933333 β-lactam compounds |
| 06/05/1990 | US4931555 Disulfide substituted oxazetidine derivatives |
| 06/05/1990 | US4931434 Penem compounds |
| 05/26/1990 | CA2003836A1 Penem derivatives and processes for their preparation |
| 05/22/1990 | US4927507 Antibiotic intermediate |
| 05/22/1990 | CA1269364A1 Substituted penem derivatives and process for their preparation |
| 05/15/1990 | US4925934 Deesterification |
| 05/09/1990 | EP0367606A1 Process for the preparation of 6-oxopenicillanates |
| 05/09/1990 | EP0367124A1 Penicillanic acid derivatives |
| 05/09/1990 | CN1041944A Process for preparation of penems |
| 05/08/1990 | US4923856 Antibiotics, beta-lactamase inhibitors |
| 05/08/1990 | CA1268759A1 Copper-mediated oximation reaction |
| 05/03/1990 | WO1990004594A1 Novel antimicrobial quinolonyl lactam esters |
| 05/03/1990 | WO1990004591A1 Novel antimicrobial dithiocarbamoyl quinolones |
| 05/02/1990 | EP0366643A2 Novel antimicrobial dithiocarbamoyl quinolones |
| 05/02/1990 | EP0366641A2 Novel antimicrobial quinolonyl lactam esters |
| 05/02/1990 | EP0366193A2 Novel antimicrobial quinolonyl lactams |
| 05/02/1990 | EP0366189A2 Novel antimicrobial lactam-quinolones |
| 05/01/1990 | US4921954 From sulfoxide intermediate |
| 04/30/1990 | CA2001642A1 Penicillanic acid derivatives |
| 04/25/1990 | EP0365223A2 Process for the preparation of penems |
| 04/25/1990 | CA1268183C Phosphorane intermediates for use in preparing penem antibiotics |
| 04/17/1990 | US4918188 Intermediates for penicillin and carbapenicillin antibiotics |
| 04/17/1990 | US4918067 Heterocyclic substituted penicillin antibiotics |
| 03/28/1990 | CN1040797A Preparation process of sodium salt penicillin |
| 03/27/1990 | US4912213 Reacting lead with halogenated penicillanic acid derivative |
| 03/27/1990 | US4912212 Cephem compounds |
| 03/27/1990 | US4912211 Method for producing pure crystalline antibiotic products |
| 03/27/1990 | CA1267138A1 PROCESS FOR THE PREPARATION OF .beta.-LACTAM COMPOUNDS |
| 03/20/1990 | CA1266828A1 Pharmaceutical compositions of the prodrug type, a process for the preparation thereof, a process for the preparation of prodrug functioning compounds and compounds obtained herein |
| 02/22/1990 | WO1990001484A1 Crystalline (5r,6s)-2-carbamoyloxymethyl-6-[(1r)-hydroxyethyl]-2-penem-carboxylic acid and its pharmaceutical formulation |
| 02/22/1990 | DE3921830A1 Verfahren zur herstellung von penemen A process for preparing penems |
| 02/13/1990 | CA1265787A1 Method for producing chemical compounds |
| 02/13/1990 | CA1265786A1 6-(substituted methylene)penems |
| 02/06/1990 | US4898939 Process for preparing 2β-substituted-methylpenicillin derivatives |
| 01/30/1990 | US4897476 Process for preparing penems |
| 01/23/1990 | US4895941 Antibiotics |
| 01/23/1990 | US4895940 From (2-((triphenylmethylthio)-3-(dimethyltert-butylsiloxy)-ethyl)-2-azetidon-1 -yl)acetic acid esters |
| 01/23/1990 | CA1264736A1 Process for 2-(1-oxo-3-thiolanyl)-2-penem antibiotics |
| 01/09/1990 | CA1264319A1 2(n-heterocyclyl)penems |
| 01/02/1990 | US4891369 Beta-lactamase inhibitors |
| 12/26/1989 | US4889929 Preparation of 1'-ethoxycarbonyl-oxyethyl esters of penicillins |
| 12/20/1989 | EP0174342B1 Brain-specific analogues of centrally acting amines |
| 12/19/1989 | US4888429 Process for producing allyl aminothiazole acetate intermediates |
| 12/13/1989 | EP0345827A1 Process for the production of penem compounds |
| 12/12/1989 | US4886793 Penem derivatives |
| 12/05/1989 | CA1263644A1 2-azacycloalkylthiopenem derivatives |
| 11/29/1989 | CN1037514A Process for preparing 2 alpha-methyl-2 beta-(1,2,3-triazole-1-yl) methylpenam-3 alpha-carboxylic acid derivatives |
| 11/28/1989 | CA1263399A1 Process for the manufacture of aminothiazole acetic acid derivatives |
| 11/21/1989 | US4882325 Crystalline 1,1-dioxopenicillanoyloxymethyl 6-(d-amino-phenylacetamido)penicillanate napsylate and method of using the same |
| 11/15/1989 | CN1037151A Process for preparation of beta-lactam derivatives |
| 11/01/1989 | CN1036767A Process for preparing 2-substituted-methylpenicillin derivatives |
| 10/31/1989 | US4877783 β-lactam antibacterial agents |
| 10/25/1989 | EP0338824A2 Esters of 6-beta-(alpha-oxyimino)-acylamino-penicillanic acid derivatives |
| 10/25/1989 | EP0338735A1 Process for optically active 3-(methane-sulfonyloxy)thioland and analogs |
| 10/24/1989 | US4876338 Synthesis of azetidinones using CuCl |
| 10/18/1989 | EP0337704A2 Beta-lactam derivatives |
| 10/18/1989 | EP0337643A2 6-Substituted acrylamido penicillanic acid derivatives, preparation and use |
| 10/17/1989 | US4874877 Process for optically active 3-(methane-sulfonyloxy)thiolane and analogs |
| 10/12/1989 | EP0313561A4 Compositions used in permanent structure altering of hair. |
| 10/12/1989 | EP0311626A4 Use of N-alkyl-2-pyrrolidone in compositions for the permanent alteration of hair color. |
| 10/11/1989 | EP0336511A2 Method of protection of the carboxy groups in the chemistry of beta-lactam compounds |
| 10/10/1989 | US4873301 Optically active, ethylenically unsaturated polymers of amino penicillanic acid compounds |
| 10/04/1989 | EP0335545A2 Pharmaceutical formulations for parenteral use |
| 09/26/1989 | US4870170 Process for 2-(1-oxo-3-thiolanyl)-2-penem antibiotics |
| 09/26/1989 | CA1261318A1 Stereocontrolled acetoxyazetidinone process |
| 09/19/1989 | US4868297 Catalytic hydrogenation |
| 09/19/1989 | US4868296 Bactericides, beta-lactamase inhibitors |
| 09/12/1989 | US4866170 Stable hydrate of penicillin derivative |
| 09/12/1989 | US4866169 Antibiotics cephalosporins |
| 09/06/1989 | EP0331395A1 Process for preparing 2-alpha-methyl-2-beta-(1,2,3-triazol-1-yl)methyl-penam-3-alpha-carboxylic acid derivatives |
| 09/06/1989 | EP0331394A1 Process for preparing 2 beta-substituted-methylpenicillin derivatives |
| 09/06/1989 | EP0331146A1 Process for preparation of beta-lactam derivatives |
| 09/05/1989 | US4863965 Ibuprofen acid anhydrides and prodrug pharmaceutical composition containing the same |
| 09/05/1989 | US4863915 β-lactam antibiotics |
| 09/05/1989 | US4863914 Bactericides, antibiotics |
| 08/29/1989 | US4861768 2 β-substituted thiomethylpenicillin derivatives and their preparation and use |
| 08/22/1989 | CA1258637A1 Compositions used in permanent structure altering of hair |
| 08/16/1989 | EP0327766A2 Redox systems for brain-targeted drug delivery |
| 08/08/1989 | US4855421 Chemical intermediates for penicillins |
| 08/08/1989 | US4855419 Application of 4-[1-oxoalkyl]-2,5-oxazolidinediones in selective stereospecific formation of biologically active α-lactams |
| 07/26/1989 | CN1034131A Antibacterial lyophilized prepn. |
| 07/18/1989 | US4849516 Penicillin and cephalosporin antibiotic intermediates |
| 07/18/1989 | US4849419 7-oxo-4-thia-azabicyclo[3,2,0]hept-2-ene derivatives |
| 07/11/1989 | US4847266 Epimerization, purification |
| 07/11/1989 | US4847247 Penicillin derivatives as anti-inflammatory and antidegenerative agents |
| 07/04/1989 | US4845097 Phenoxyalkylaminopyrimidine derivatives and insecticidal and acaricidal compositions containing them |
| 07/04/1989 | US4845088 Tetrazolyl derivatives of beta-lactams useful as elastase inhibitors |
| 06/27/1989 | CA1256426A1 Process for the preparation of 6-amino-penicillanic acid 1,1 dioxide by oxidation of 6-amino penicillanic acid, |
| 06/21/1989 | EP0321187A1 6-(Substituted methylene)penems |