Patents
Sitemap › C07 - Organic chemistry › C07D - Heterocyclic compounds › C07D 205 - Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom
Patents for C07D 205 - Heterocyclic compounds containing four-membered rings with one nitrogen atom as the only ring hetero atom (6,868)
02/1983
02/08/1983US4372946 Clavulanic acid derivatives their preparation and use
02/01/1983CA1140555A2 Process for the manufacture of sulfonic acid esters of 2-(2-oxoazetidin-1-yl)-hydroxycrotonic acid compounds
02/01/1983CA1140554A2 Process for the manufacture of 2-(2-oxoazetidin-1-yl)-crotonic acid derivatives
01/1983
01/26/1983EP0070575A2 New starting compounds for preparing analogous compounds of cephalosporins and processes for their preparation
01/19/1983EP0070204A2 Carboxylic beta-lactam compounds and the preparation thereof
01/19/1983EP0070024A1 The crystalline anhydrous form of (3S-(3 alpha(z),4 beta))-3-(((2-amino-4-thiazolyl)(1-carboxy-1-methylethoxy)-imino)-acetyl)-amino)-4-methyl-2-oxo-1-azetidinesulfonic acid, method for its preparation, mixture and pharmaceutical composition containing it
01/18/1983US4369187 3-Substituted-1-azabicyclo[3.2.0]hept-2-en-7-one-2-carboxylic acid
01/18/1983CA1139745A1 Process for preparing 7-oxo-4-thia-1-aza- bicyclo¬3,2,0|-heptane derivatives
01/12/1983EP0069378A2 Antibacterial penem derivatives
01/12/1983EP0069377A2 Antibacterial penem derivatives
01/12/1983EP0069373A1 (5R, 6R)-Penem compounds, their production and use
01/11/1983US4368156 Preparation of 4-haloazetidin-2-ones from 4-sulfinoazetidin-2-ones
01/05/1983EP0068466A1 4-Aryl or heteroaryl thio-2-oxo-1-azetidinesulfonic acid salts and process for their preparation
01/04/1983CA1138884A1 PROCESS FOR THE PREPARATION OF N-.alpha.-ALKOXYALKYL- CARBOXAMIDES, AND SOME REPRESENTATIVES OF THIS CLASS OF COMPOUNDS AND SECONDARY PRODUCTS OBTAINED THEREFROM
12/1982
12/22/1982EP0067517A1 Process for the preparation of an enantiomer of a beta-lactam derivative
12/21/1982US4364865 Bicyclic unsaturated thia-aza compounds and 4-acylthio azetidinone intermediates
12/14/1982CA1137325A1 Herbicidal agents containing a thiolcarbamate
12/08/1982EP0066484A1 Process for the preparation of N-benzyl-substituted imides
12/08/1982EP0066301A1 Intermediates for the preparation of thienamycin and process for preparing the same
11/1982
11/30/1982CA1136617A1 2,6-disubstituted penem compounds
11/24/1982EP0065488A1 Process for the preparation of 4-thio-azetidinone compounds
11/24/1982EP0065229A1 Benzazepines, process for their preparation and their application as pharmaceutical preparations
11/23/1982US4360684 Process for the preparation of (2S)-tetrahydro-2α-methyl-6-oxo-4βα-carboxylic acid
11/23/1982US4360464 Ring opening of azetidinol derivatives
11/23/1982CA1136132A1 Cyclization to form cephem ring and intermediates therefor
11/17/1982EP0064797A1 N-Diarylmethyl-3-amino-4-alkenaryl-2-azetidinones and their preparation
11/11/1982WO1982003859A1 1-sulfo-2-oxoazetidine derivatives and process for their preparation
11/11/1982WO1982003858A1 Azetidine derivaties and process for their preparation
11/02/1982US4357342 1-Azabicyclo[3.2.0]heptan-3,7-dione-2-carboxylic acid
10/1982
10/26/1982US4356120 Intermediates for thienamycin
10/26/1982CA1134349A1 Penam 1,1-dioxides as beta-lactamase inhibitors
10/20/1982EP0062876A1 2-Oxo-1-(((substituted sulfonyl)amino)carbonyl)azetidines
10/20/1982EP0062840A1 Process for the preparation of (2S)-tetrahydro-2alpha-methyl-6-oxo-4beta-amino-2H-pyran-3alpha-carboxylic acid esters
10/19/1982US4355172 Process for 4-(D-3-amino-3-carboxypropoxy)-phenylglyoxylic acid oxime derivatives
10/12/1982US4353825 Intermediates for antibiotics
10/06/1982EP0061763A1 4-Substituted mercapto-2-oxo-1-azetidinesulfonic acid salts and process for their preparation
10/05/1982US4352752 Process for the preparation of dipeptides
09/1982
09/30/1982WO1982003218A1 Carba-2-penem compouns and process for their preparation
09/29/1982EP0061205A1 2-Penem compounds; a method for their preparation and pharmaceutical compositions comprising them
09/28/1982CA1132549A1 INVERSION OF THE 3 .alpha.-AMINO GROUP ATTACHED TO THE .beta.-LACTAM RING
09/28/1982CA1132547A2 Cyclization to form cephem ring and intermediates therefor
09/22/1982EP0060416A1 New beta-lactam acetic acid derivatives, the process for preparing them, and their use as intermediates for 1-azabicyclo(3.2.0.)hept-2-ene antibiotics
09/21/1982US4350703 β-Lactam antibacterial agents
09/21/1982US4350694 Oxacephalosporins/;
09/21/1982US4350631 Antibiotics
09/15/1982EP0060120A1 Process for preparing 4-haloazetidin-2-ones
09/15/1982EP0060119A1 Azetidinone compounds and their preparation
09/15/1982EP0060077A1 Beta-lactam antibiotics, their preparation and use
09/14/1982US4349687 Intermediate for synthesis of thienamycin via (3SR, 4RS)-3-[1 (SR)-hydroxyethyl]-2-oxo-4-azetidineacetic acid
09/14/1982US4349547 Suppressing obesity and over-secretion of insulin with 2-(α-hydroxy-m-trifluoromethylbenzyl)azetidine
09/14/1982CA1131646A1 Process for preparing 2-chlorosul-finylazetidinones
09/07/1982US4348320 Substituted azetidiones
08/1982
08/31/1982US4347368 3-Substituted-6-substituted-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
08/31/1982US4347367 Antibiotics
08/31/1982US4347183 Reacting a 4-substituted azedidin-2-one with an acid halide; reacting the product with a trialkyl phosphite
08/31/1982US4347181 Intermediates for producing bicyclic β-lactam-antibiotics
08/25/1982EP0058317A1 Process for the preparation of 2-penem compounds
08/24/1982US4346218 Cyclization process to form cephem ring
08/17/1982US4344885 Intermediate for the preparation of thienamycin
08/17/1982CA1129871A2 Azetidine derivatives
08/17/1982CA1129870A1 Azetidine derivatives
08/11/1982EP0057412A1 Peptide, process for preparation thereof and use thereof
08/10/1982US4343800 Antidepressants; adrenergic blocking, hypotensive, and antiarrhythmia agents
08/03/1982US4342760 Cephalosporin analogues
08/03/1982US4342685 Inversion of the 3 α-amino group attached to the β-lactam ring
08/03/1982CA1128939A1 Production of methylene-cycloamines
08/03/1982CA1128938A1 Preparation of aralkylamines
07/1982
07/27/1982US4341706 Process for the preparation of carbapenem antibiotics
07/27/1982US4341705 Thienamycin derivatives
07/27/1982CA1128530A2 MONOCYCLIC .beta.-LACTAMS WITH ANTIBACTERIAL ACTIVITY
07/27/1982CA1128500A1 Antibacterial agents
07/13/1982US4339449 Analogous compounds of cephalosporins, and pharmaceutical composition comprising the same
07/13/1982CA1127643A2 Alkylene derivatives
06/1982
06/30/1982EP0054971A1 1-Carba-6-(1-hydroxyethyl)-2-carbonyl-penem-3-carboxylic acid, process for preparing and pharmaceutical compositions comprising the same
06/30/1982EP0054917A2 6- and 4-Substituted-1-azabicyclo(3.2.0)heptan-3,7-dione-2-carboxylates
06/29/1982US4337197 O-sulfated β-lactam hydroxamic acids and intermediates
06/24/1982WO1982002043A1 1-sulfo-2-oxoazetidine derivatives and process for their preparation
06/24/1982WO1982002042A1 Azetidine derivatives and process for their preparation
06/22/1982US4336191 Decyclization by reacting beta-lactam ring with an alkanoyl hypohalite in the presence of an aprotic solvent
06/22/1982CA1126271A2 Substituted amines
06/16/1982EP0053816A1 1-Sulfo-2-oxoazetidine derivatives, their production and use
06/16/1982EP0053815A1 2-Oxoazetidine derivatives, their production and use
06/15/1982US4335240 Process for cyclization
06/15/1982US4335043 Substituted N-methylene derivatives of thienamycin
06/15/1982CA1125752A1 3,3-dichloro-2-azetidinone derivatives
06/15/1982CA1125751A2 Substituted cyclic amines
06/10/1982WO1982001873A1 1-sulfo-2-oxoazetidine derivatives and process for their preparation
06/10/1982WO1982001872A1 Azetidine derivatives and process for their preparation
06/10/1982WO1982001871A1 Process for preparing a 1-sulfo-2-oxoazetidine derivative
06/10/1982WO1982001820A1 Beta-lactamase-inhibiting composition
06/09/1982EP0053387A1 Method of preparing 1-sulfo-2-oxoazetidine derivatives and intermediates therefor
06/08/1982US4334097 Process for the preparation of N-α-alkoxyalkyl-carboxamides, and some representatives of this class of compounds and secondary products obtained therefrom
06/02/1982EP0053017A1 Amide derivatives
06/01/1982US4332722 Bicyclic azetidinothiazolines
05/1982
05/27/1982WO1982001705A1 4-substituted-2-oxoazetidine derivatives and process for their preparation
05/26/1982EP0052299A1 2-Oxoazetidine derivatives and production thereof
05/25/1982US4331677 Antibiotics, penicillin derivatives
05/25/1982US4331676 2-penem compounds unsubstituted in the 6 position
05/19/1982EP0051813A2 7-Oxo-4-thia-1-aza(3,2,0)heptane and 7-oxo-4-thia-1-aza(3,2,0)hept-2-ene derivatives
05/13/1982WO1982001551A1 Beta-lactamase-inhibiting composition
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