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