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)
04/1990
04/05/1990WO1990003399A1 Amino acid transport proteins, amino acid analogues, assay apparatus, uses thereof for treatment and diagnosis of cancer
04/03/1990US4914200 Reacting protected beta-lactam with acetic anhydride in organic solvent containing water or acetic acid in presence of pyridine compound at low temperature
04/03/1990US4914199 Process for preparing 4-acetoxy-3-hydroxyethylazetidin-2-one derivatives
04/03/1990CA1267415A1 N-(substituted-methyl)-azetidin-2-ones
03/1990
03/22/1990WO1990002732A1 Methods for preparing captopril and its analogues
03/21/1990EP0359540A2 Process for 1-carba(dethia) cephalosporins
03/21/1990EP0358736A1 Process for the production of aziridines
03/14/1990EP0357604A1 Antibiotic beta-lactams containing a pyridone carboxylic acid or acid derivative
03/08/1990WO1990002118A1 Derivatives and precursors of captopril and its analogues
03/07/1990EP0357118A1 Beta-lactams synthesis using a metal compound as catalyst
02/1990
02/21/1990CN1039806A Beta-lactams synthesis using metal compound as catalyst
02/21/1990CN1006893B Beta-amino-beta-propiolactam derivative and moisture curable polyurethane composition thereof
02/14/1990EP0354757A2 Cephalosporins and homologous compounds, process for their preparation and pharmaceutical compositions containing them
02/13/1990US4900728 Novel 3-amino-2-oxo-azetidine-1-sulfonic acids
02/08/1990DE3824052A1 Azetidineoxamide esters and azetidineoxamide thioesters, their preparation, and their use for regulating plant growth
02/06/1990US4898955 Intermediate for preparing trans-b-lactams
02/06/1990US4898654 Method of producing optically active β-lactam derivatives
01/1990
01/23/1990US4895940 From (2-((triphenylmethylthio)-3-(dimethyltert-butylsiloxy)-ethyl)-2-azetidon-1 -yl)acetic acid esters
01/23/1990US4895939 High percentage β-yield synthesis of carbapenem intermediates
01/17/1990EP0350693A2 Azetidine derivatives, process for their preparation and their use in the regulation of plant growth
01/11/1990WO1990000170A1 Novel 6-amido-1-methylcarbapenems
01/10/1990EP0350211A2 Novel 6-amido-1-methyl carbapenems
01/10/1990EP0350210A2 Novel 6-amido-1-methyl-2-(substituted-thio)-carbapenems
12/1989
12/27/1989EP0347757A2 Catalytic preparation of cyanoalkyl lactams
12/26/1989US4889930 Process for making 2-oxo-1-((substituted sulfonyl)amino)carbonzyl)azetidines and intermediates used therein
12/26/1989US4889848 4-oxo-4h-benzo(a)quinolizines; muscle relaxants; sedatives; anticonvulsants; anxiolytic agents
12/20/1989EP0346443A1 Process for the production of amines, hydroxyamines and aziridines.
12/19/1989US4888429 Process for producing allyl aminothiazole acetate intermediates
12/13/1989EP0345999A1 Process for intermediates to 1-carba(1-dethia)-3-cephem-4-carboxylic acids
12/13/1989EP0345998A1 Process and intermediates for beta-lactam antibiotics
12/13/1989EP0345997A2 Azetidinone intermediates for 1-carba (dethia) cephalosporins
12/13/1989EP0345827A1 Process for the production of penem compounds
12/06/1989EP0344707A2 2-Oxo-1-[[(substituted sulfonyl)-amino]carbonyl]-azetidine derivatives
12/06/1989EP0344197A1 Novel n-1 substituted beta-lactams as antibiotics.
12/05/1989US4885362 Antibiotics
11/1989
11/29/1989EP0343716A1 Process for synthesis of a beta-lactam carbapenem intermediate
11/28/1989US4883869 Bactericides, antibiotics
11/28/1989CA1263399A1 Process for the manufacture of aminothiazole acetic acid derivatives
11/21/1989US4882429 Intermediates for preparing penicillin and derivatives
11/21/1989CA1263117A1 Carbapenems, their production and use
11/16/1989WO1989010961A1 Peptide analogs and their use as haptens to elicit catalytic antibodies
11/16/1989WO1989010754A1 Therapeutic methods using catalytic antibodies
11/15/1989CN1037144A Substituted azetidinones as anti-inflammatory and antidegenerative agents
11/14/1989US4880869 Storage stability, sealing materials
11/07/1989US4879410 Carbamylmethylation of aromatic hydrocarbons
11/07/1989US4878938 Herbicidal Sulfonamides
10/1989
10/24/1989US4876365 Intermediate compounds for preparing penems and carbapenems
10/24/1989US4876338 Synthesis of azetidinones using CuCl
10/24/1989US4876251 Antibiotics
10/18/1989EP0337549A1 New substituted azetidinones as anti-inflammatory and antidegenerative agents
10/17/1989CA1262357A1 N-hydroxyl protecting groups and process for the preparation of 3-acylamino-1-hydroxy-2-azetidinones
10/11/1989EP0336143A1 A new process for carbapenem intermediates
10/10/1989US4873324 Process for chiral synthesis of 1-beta-methyl-carbapenem intermediates
10/03/1989CA1262134A1 3-acylamino-2-oxo-1-azetidinyl esters of phosphonic acids, phosphoric acid and phosphoric acid esters
10/03/1989CA1262128A1 .beta.-lactams
09/1989
09/26/1989US4870189 Process for synthesis of azetidine and novel intermediates therefor
09/26/1989US4870173 Lactam formation by a selective cyclization process
09/26/1989US4870169 Intermediates for beta-lactam antibiotics
09/26/1989CA1261858A1 Method of producing male sterility in plants
09/26/1989CA1261332A1 Ester substituted aminoalkanoylureido amino and imino acid and ester compounds
09/26/1989CA1261318A1 Stereocontrolled acetoxyazetidinone process
09/26/1989CA1260472A1 2-oxo-1- (aminocarbonylaminosulfonylaminocarbonyl)azetidines
09/26/1989CA1260003A2 Azetidinedione urethanes
09/20/1989EP0333268A1 Process for synthesis of a chiral 3-beta hydrogen (3R) 4-aroyloxy azetidinone
09/19/1989CA1259606A1 Cephem derivatives and processes for their manufacture
09/12/1989CA1259322A1 Process for producing azetidinones
09/12/1989CA1259319A2 Process of producing 2-azetidinone-4-substituted compounds, and medicaments containing the compounds
09/12/1989CA1259318A2 Process of producing 2-azetidinone-4-substituted compounds, and medicaments containing the compounds
08/1989
08/29/1989US4861877 Process for preparing 4-acetoxy-3-hydroxyethylazetidin-2-one derivatives
08/29/1989CA1258948A1 Hydroxy substituted peptide compounds
08/22/1989CA1258750A1 Renin inhibitors containing 2-substituted statine
08/08/1989US4855452 N-substituted azetidine carboxylate derivatives
08/08/1989US4855421 Chemical intermediates for penicillins
08/01/1989US4853468 Process for the preparation of cephem derivatives
07/1989
07/27/1989WO1989005797A3 Process for the production of aziridines
07/18/1989US4849516 Penicillin and cephalosporin antibiotic intermediates
07/18/1989US4849419 7-oxo-4-thia-azabicyclo[3,2,0]hept-2-ene derivatives
07/13/1989WO1989006229A1 Process for the production of amines, hydroxyamines and aziridines
07/11/1989US4846873 1-carboalkoxyalkyl-3-alkoxy-4-(2'-carboxyphenyl)-azet-2-ones as plant growth regulators and selective herbicides
07/04/1989US4845210 Azetidinone derivatives and processes for production thereof
06/1989
06/29/1989WO1989005797A2 Process for the production of aziridines
06/28/1989EP0321844A2 Process for making 2-oxo-1-(((substituted sulfonyl)-amino)carbonyl)azetidines and intermediates used therein
06/27/1989CA1256650A1 Process of producing 2-azetidinone-4-substituted compounds, and medicaments containing the compounds
06/27/1989CA1256444A1 Process for preparing 4-acetoxy-3- hydroxyethylazetidin-2-one derivatives
06/27/1989CA1256443A1 Process for preparing 4-acetoxy-3- hydroxyethylazetidin-2-one derivatives
06/20/1989US4841061 Process for producing cyclic amines
06/20/1989US4841043 Stereoselective synthesis of 1-β-alkyl carbapenem antibiotic intermediates
06/20/1989US4841042 Process for the preparation of carbapenem intermediates
06/14/1989EP0320497A1 Substituted 2-thioxopenams, intermediates therefrom and process for preparing substituted 2-thioxopenams and 2-substituted thiopenems
06/13/1989US4839352 N-acyl derivatives of thienamycin
06/07/1989EP0318893A2 Titanocenes, their use and N-substituted fluoroanilines
06/07/1989EP0318682A2 Tricyclic thiazole derivatives
06/07/1989CN1004417B Process for preparing beta-lactam compounds
06/06/1989US4837318 Carbonate substituted monobactams as antibiotics
05/1989
05/30/1989US4834846 Process for deblocking N-substituted β-lactams
05/24/1989EP0316360A1 ASYMETRIC SYNTHESIS OF ENANTIOMERICALLY PURE MONOCLYCLIC $g(b)-LACTAM INTERMEDIATES
05/23/1989US4833248 Catalyst for vapor-phase intramolecular dehydration reaction of alkanolamines
05/16/1989CA1254218A1 4-(3-acylamino-2-oxo-1-azetidinyl)-4-oxo-2-butenoic acid
05/02/1989US4827006 Preparation of azetidinones via novel protected intermediates
05/02/1989CA1253502A1 4-¬¬(amidomethyl)oxy|methyl|-2-oxo-1- azetidinesulfonic acid salts
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