| 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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| 05/13/1992 | CN1016607B Method for preparing crystalline cefadroxil monoltyrate |
| 05/12/1992 | US5112967 Process for synthesizing antibacterial cephalosporin compounds |
| 05/10/1992 | CA2072883A1 Cephalosporin compounds and processes for preparation thereof |
| 05/07/1992 | CA2055062A1 Prodrugs for beta-lactamase and uses thereof |
| 05/06/1992 | EP0484030A2 Antibiotic C-3 cyclobutenedione substituted (1-carba)cephalosporin compounds, compositions, and methods of use thereof |
| 05/06/1992 | CA2054451A1 Process for cleavage of esters during the production of cephalosporins |
| 05/05/1992 | US5110921 7-acylamino-3-vinylcephalosporanic acid derivatives |
| 05/05/1992 | CA1300125C Cephalosporin derivatives |
| 04/29/1992 | EP0482657A2 Cephem compounds, their production and use |
| 04/28/1992 | US5109132 Process for the preparation of 3-exomethylene cepham derivatives |
| 04/28/1992 | US5109131 Method for production of t-butyl 3-oxobutyrates and their use |
| 04/28/1992 | US5109130 Cephem compound |
| 04/28/1992 | US5108997 Cephem compounds |
| 04/28/1992 | CA1299564C Cephalosporin derivative |
| 04/27/1992 | CA2054126A1 Cephem compounds, their production and use |
| 04/23/1992 | CA2053159A1 Antibiotic c-3 cyclobutenedione substituted (1-carba) cephalosporin compounds, compositions, and methods of use thereof |
| 04/22/1992 | EP0481441A2 Novel cephem compounds, their preparation processes and antibacterial agents |
| 04/22/1992 | CN1060469A Process for preparing cephalosporins derivants |
| 04/21/1992 | US5106842 Antibiotic c-3 cyclobutenedione substituted (1-carba)cephalosporin compounds, compositions, and methods of use thereof |
| 04/21/1992 | CA1299171C Tricyclic cepham compounds, their production and use |
| 04/15/1992 | EP0282531B1 Stable crystalline form of an intermediate product of cephalosporine |
| 04/14/1992 | US5104866 Water-soluble antibiotic composition and water-soluble salts of cephem compounds |
| 04/07/1992 | US5103012 Chemical intermediate |
| 04/01/1992 | EP0477717A2 New 3-substituted cephalosporins, process for their preparation and their use as medicinal preparations |
| 03/31/1992 | US5100887 Bactericides |
| 03/31/1992 | CA1298288C Cephalosporin salts and injectable compositions |
| 03/29/1992 | CA2052305A1 3-substituted cephalosporins, a process for their preparation and their use as medicaments |
| 03/25/1992 | EP0476875A2 Process for the purification and concentration of biologically active materials |
| 03/25/1992 | CN1015988B New cephalosporins and process for their preparation |
| 03/19/1992 | WO1992004353A1 Cephalosporin derivatives and their homologues |
| 03/18/1992 | EP0475150A1 Antibiotic C-3 di-hydroxyphenyl substituted cephalosporin compounds, compositions and use thereof |
| 03/18/1992 | CN1059525A Deprotection of allylic esters and ethers |
| 03/17/1992 | CA1297473C Crystallized cephem-acid addition salts, and a process for the preparation thereof |
| 03/11/1992 | EP0474211A2 Process for the continuous transformation of cephalosporin derivatives in glutaryl-7-amino-cephalosporin derivatives |
| 03/11/1992 | EP0474049A1 Antibiotic C-3 catechol-substituted cephalosporin compounds, compositions and use thereof |
| 03/11/1992 | EP0474013A1 Process for the preparation of crystalline TACS |
| 03/10/1992 | US5095107 Process for cleavage of esters during the production of cephalosporins |
| 03/10/1992 | US5095012 Bactericides |
| 03/10/1992 | US5095011 Antibiotics, cephalosporina |
| 03/10/1992 | CA1297097C Thiadiazolylacetamide cephem derivatives |
| 03/10/1992 | CA1297096C Crystalline 7-[2-(2-aminothiazol-4-yl)-2- hydroxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) |
| 03/10/1992 | CA1297056C Cephem compounds and their production |
| 03/06/1992 | CA2050615A1 Process for the continuous conversion of cephalosporin derivatives into glutaryl-7-aminocephalosporanic acid derivatives |
| 03/04/1992 | CN1015714B Prepn. of 7-amino-3-propenylcephalosporanic acid and esters thereof |
| 02/26/1992 | EP0472060A2 Antibiotic c-7 catechol-subtituted cephalosporin compounds, compositions, and use thereof |
| 02/25/1992 | US5091382 Cephalosporin derivatives |
| 02/24/1992 | CA2048832A1 Antibiotic c-7 catechol-substituted cephalosporin compounds, compositions, and method of use thereof |
| 02/24/1992 | CA2046771A1 Antibiotic c-3 di-hydroxyphenyl substituted cephalosporin compounds, compositions and method of use thereof |
| 02/24/1992 | CA2046442A1 Antibiotic c-3 catechol-substituted cephalosporin compounds, compositions and methods of use thereof |
| 02/20/1992 | WO1992002523A1 Novel cephalosporin compound |
| 02/18/1992 | WO1992003445A1 Novel cephalosporin compounds and processes for preparation thereof |
| 02/18/1992 | US5089491 Active against both gram-negative and gram-positive bacteria |
| 02/18/1992 | US5089490 Cephem derivatives |
| 02/18/1992 | CA2088926A1 Cephalosporin compounds and processes for preparation thereof |
| 02/18/1992 | CA1296012C 6,7-dihydroxy-isoquinoline derivatives |
| 02/18/1992 | CA1295995C Antibacterial compounds, their production and use |
| 02/12/1992 | CN1058595A Thioalkylthio cephalosporin derivatives |
| 02/12/1992 | CN1058593A Process and intermediates for beta-lactams having aminothiazole (iminoxyacetic acid) acetic acid sidechains |
| 02/06/1992 | WO1992001696A1 Cephalosporins and homologues, preparations and pharmaceutical compositions |
| 02/06/1992 | WO1992001695A1 Cephalosporins and homologues, preparations and pharmaceutical compositions |
| 01/28/1992 | US5084453 Antibiotics, bactericides |
| 01/23/1992 | WO1992001061A1 PROCESS FOR PREPARATION OF β-LACTAMS |
| 01/23/1992 | WO1992000981A1 Novel 3-substituted cephem compounds and processes for preparation thereof |
| 01/22/1992 | EP0467647A2 Thioalkylthio cephalosporin derivatives |
| 01/20/1992 | CA2359026A1 Intermediate compounds of thioalkylthio cephalosporin derivatives |
| 01/14/1992 | US5081116 Cephalosporin derivatives |
| 01/08/1992 | EP0464705A1 Process and intermediates for Beta-lactams having aminothiazole (iminooxyacetic acid)acetic acid sidechains |
| 01/07/1992 | US5079369 Syn-isomer of 3,7-disubstituted-3-cephem-4-carboxylic acid compounds and processes for the preparation thereof |
| 01/07/1992 | US5079242 Bactericides, cephalosporins |
| 01/07/1992 | US5079241 Cephalosporin derivatives and pharmaceutical compositions in which they are present |
| 01/07/1992 | US5079146 Penicillinacylase is used to remove ester protecting group |
| 01/02/1992 | EP0463553A1 Cephalosporin derivative |
| 01/01/1992 | CN1015263B Process for preparation of 3-propenyl cephalosporin solvates |
| 01/01/1992 | CN1015262B Process for preparation of beta-lactam antibiotics |
| 12/31/1991 | US5077286 Beta-lactam derivatives of the 4-acylcephem sulphone and 3-acylpenam sulphone-type |
| 12/31/1991 | CA1293719C Cephem compounds and processes for preparation thereof |
| 12/31/1991 | CA1293718C Method for production of cephalosporin compounds |
| 12/30/1991 | CA2043817A1 Process and intermediates for beta-lactams having aminothiazole (iminooxyacetic acid) acetic acid sidechains |
| 12/24/1991 | USRE33778 1,3-dithietane-2-carboxylic acid penicillin and cephalosporin derivatives |
| 12/24/1991 | US5075299 Cephalosporin compounds and antibacterial agents |
| 12/24/1991 | US5075298 Cephalosporins |
| 12/18/1991 | EP0462009A1 Cephalosporins having in position 3 a propenyl radical substituted by a quaternary ammonium, their process for preparation, their use as medicaments, compositions containing them and intermediates |
| 12/18/1991 | CN1015106B Process for preparing crystalline hydrate of oral cephalosporin |
| 12/18/1991 | CN1015104B Deprotection of allylic esters and ethers |
| 12/17/1991 | US5073551 Cephalosporin compounds |
| 12/17/1991 | US5073550 Cephalosphorins with sulfur-containing oxyimino side chain |
| 12/16/1991 | CA2044700A1 Cephalosporins contening a quaternary ammomium substituted propenyl radical in third position, their preparation process, their pharmaceutical application, their compositions and the new intermediary obtained |
| 12/10/1991 | US5071979 Antibiotics |
| 12/03/1991 | US5070195 Intermediates for conversion of penicillins to cephalosporins |
| 11/28/1991 | WO1991017997A1 PROCESS FOR THE PREPARATION OF 7α-ALKOXYCEPHEM DERIVATIVES |
| 11/28/1991 | WO1991017996A1 Cephalosporin esters which are useful as antibiotics |
| 11/26/1991 | US5068322 Crystalline cephalosporin compounds |
| 11/21/1991 | EP0457381A2 Delta 2-cephem sulphones |
| 11/19/1991 | US5066812 Chemical intermediates for bactericides |
| 11/19/1991 | US5066800 Qunoline intermediates useful therein for synthesizing antibacterial compounds |
| 11/19/1991 | US5066799 1,2,3-Thiadiazole derivatives, radio-labeling |
| 11/19/1991 | US5066798 Crystalline cephalosporin derivative |
| 11/19/1991 | US5066797 Producing Exomethylene Cepham Intermediates By Reduction |
| 11/14/1991 | WO1991017166A1 Process for preparing cephalexin monohydrate |
| 11/12/1991 | US5064953 Intermediates cephalosporin derivatives |