| 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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| 04/27/1976 | US3953291 Immobilized enzymes |
| 04/20/1976 | US3951982 Antimicrobial |
| 04/20/1976 | US3951957 Chloromethyl ester of penicillins |
| 04/20/1976 | US3951956 Process for the preparation of 3-hydroxy penam-1-oxides and derivatives thereof |
| 04/20/1976 | US3951955 Penicillins substituted with heterocyclic groups |
| 04/20/1976 | US3951954 Novel oxofuryl ester derivatives of penicillin and cephalosporin |
| 04/20/1976 | US3951953 Complex of a penicillin and an anion exchange resin |
| 04/20/1976 | US3951952 Broad spectrum antibiotics |
| 04/13/1976 | US3950352 2,2-Dimethyl-3R-carboxy-6S-phenyl(or phenoxy)acetamido-1-oxa-4-aza-5R-bicyclo[3,2,0]heptan-7-one and processes for their production |
| 04/13/1976 | US3950350 Penam-dimethylsulfoxide complex |
| 04/06/1976 | US3948927 Antibiotic intermediate |
| 04/06/1976 | US3948904 Antibiotics |
| 04/06/1976 | US3948903 Substituted N-(1,2-dihydro-2-oxonicotinyl)-cephalexins and -cephaloglycins |
| 03/30/1976 | US3947465 3-Alkylsilyl-2-oxazolidonone compounds and synthesis thereof |
| 03/23/1976 | US3946015 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinyl chloride |
| 03/23/1976 | US3945995 D-α-(4-hydroxypyridine-3-carbonamido)-p-hydroxyphenylacetamidopenicillanic acid |
| 03/23/1976 | US3945994 Penicillin and derivatives |
| 03/02/1976 | US3941774 Bactericide |
| 03/02/1976 | US3941773 Crystalline |
| 02/24/1976 | US3940483 Antibiotic compositions and method |
| 02/17/1976 | US3939270 Pharmaceutical preparations containing α-aminopenicillins |
| 02/17/1976 | US3939180 Penicillin esters |
| 02/17/1976 | US3939151 Bactericide |
| 02/17/1976 | US3939150 Alpha-(4-oxo-4h-thiopyran-3-carboxamido)-p-hydroxybenzyl -penicillin or salts, bactericide |
| 02/17/1976 | US3939149 Ureidoacetamido-penicillins |
| 02/10/1976 | US3937699 Bactericides |
| 02/03/1976 | US3936447 7-Acylamino-desacetoxy-cephalosporanic acid esters and their production |
| 02/03/1976 | US3936446 Isocyanocephalosporanates |
| 02/03/1976 | US3936443 Penicillin antibiotics |
| 02/03/1976 | US3936442 Antibiotic |
| 01/27/1976 | US3935204 Cephalosporin and pharmaceutical preparations containing the same |
| 01/27/1976 | US3935202 3-(4-biphenylylcarbonyl)propionamido cephalosporin derivatives |
| 01/27/1976 | US3935198 Process for the preparation of the cephalosporanic acid derivative |
| 01/27/1976 | US3935193 Diacyl penicillins and methods for their production |
| 01/27/1976 | US3935192 Penicillins |
| 01/27/1976 | US3935189 Penicillins |
| 01/27/1976 | US3935186 Intermediates for producing semi-synthetic penicillins and cephalosporins and methods of production |
| 01/20/1976 | US3933797 6-[α-(ω-QUANIDINOALKANOYLAMIDO)ACYLAMIDO]PENICILLANIC ACIDS |
| 01/20/1976 | US3933796 Anhydrous form of ampicillin |
| 01/20/1976 | US3933795 Ureidoacetamido-penicillins |
| 01/13/1976 | US3932393 3-Methylenecephalosporins and process for production thereof |
| 01/13/1976 | US3932391 Cephalosporin isocyanates |
| 01/13/1976 | US3932387 Phosphorus and sulfur containing halides, bases |
| 01/13/1976 | US3932386 Sodium 6-(L-aminocyclohexane carboxamido)penicillanic acid |
| 01/13/1976 | US3932385 Bactericides |
| 01/06/1976 | US3931405 New penicillin esters and methods and compositions for treating infectious diseases |
| 01/06/1976 | US3931153 Bactericide |
| 01/06/1976 | US3931150 Probenecidoxymethyl and 1-ethyl esters of ampicillin |