Patents
Sitemap › C07 - Organic chemistry › C07D - Heterocyclic compounds › C07D 257 - Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
Patents for C07D 257 - Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms (9,612)
01/1991
01/30/1991EP0410241A1 Aryl alkenoic acid derivatives as leukotriene antagonists
01/28/1991CA2021995A1 Aryl alkenoic acid derivatives as leukotriene antagonists
01/24/1991WO1991000858A1 Pharmaceutically active compounds
01/23/1991EP0409069A2 Mesogenic polycyanates and thermosets thereof
01/22/1991US4987227 Epoxidation catalysts
01/22/1991US4987147 Low toxicity
01/18/1991CA2021280A1 Mesogenic polycyanates and thermosets thereof
01/16/1991EP0408509A2 Substituted benzonitriles
01/15/1991US4985065 Tetrazolinone herbicides
01/15/1991CA2021049A1 Substituted benzonitriles
01/09/1991EP0407217A1 Pharmaceutically active compounds
01/09/1991CN1048384A Thioxotetrazoles compounds
01/08/1991US4983376 Triazamacrocyclic NMR contrast agents and methods for their use
01/02/1991EP0406163A1 Thioxotetrazolines
01/01/1991US4982112 Nonlinear optical material
01/01/1991US4981873 Anticoagulants
12/1990
12/26/1990CA2019653A1 Thioxotetrazolines
12/25/1990US4980469 Reacting isothiourea of nitrogen containing heterocycle with hydroxylamine derivative
12/25/1990US4980349 Antiinflammatory agents, antiallergens, anticoagulants
12/25/1990US4980095 Sodium salt of N-C4-carboxybenzyl nonanamide
12/19/1990EP0403250A2 Phenylglycidamides useful for preparing alpha-hydroxy-beta-sulfido-arylpropionic acid derivatives
12/19/1990EP0403249A1 Leukotriene antagonists
12/18/1990US4978767 Diphenylethylene derivative and pharmaceutical use
12/18/1990US4978763 For magnetic resonance imaging agents synthesis
12/14/1990CA2018437A1 Leukotriene antagonists
12/04/1990CA1277326C Benzoic acid and benzoic acid ester derivatives having anti-inflammatory and analgesic activity
11/1990
11/29/1990WO1990007261A3 Process for preparing mono-n-alkylated polyazamacrocycles
11/27/1990US4973731 Di-t-butylphenyl alkyl and benzyl ether nitriles
11/27/1990CA1276937C Leukotriene antagonists
11/14/1990EP0397290A1 Novel derivatives, their preparation and pharmaceutical composition containing them
11/14/1990EP0396841A1 Fluorinated arachidonic acid derivatives
11/14/1990CN1046892A Fluorinated arachidonic acid derivatives
11/07/1990EP0396435A1 Polyaza derivatives and their metal complexes for use in the fixation of oxygen
11/07/1990CN1046739A Macrocyclic aminophosphonic acid complexes, their preparation formulations and use
11/06/1990US4968796 Preparation of sulphonylisothioureas
11/06/1990US4968711 Leukotriene antagonists
11/06/1990US4968710 Inhibitors of leukotriene biosynthesis
10/1990
10/31/1990EP0394542A1 Bone marrow cell recovery with synthetic csf inducers
10/30/1990US4966902 Insecticides, miticides
10/17/1990EP0392666A2 Anti-HIV compositions
10/17/1990EP0392423A2 Substituted 1,4-7-10-tetraazacyclotridecanes, method for their preparation and use of the same for labelling substances with radionuclides
10/16/1990US4963578 Organic compounds and their pharmaceutical use
10/16/1990US4963550 Substituted thioureas, isothioureas and carbodiimides and use as pesticide
10/16/1990US4963344 Administering biocompatible lanthanide complex
10/09/1990US4962018 Timed release development inhibitor
10/03/1990CN1045869A Synthesis of colourless compound capable of releasing developing promotor
10/03/1990CN1045780A Process for preparing sulphonamide derivatives
10/02/1990US4960889 Cephalosporin intermediates
10/01/1990WO1990012001A1 Thionaphthalene derivatives, method of producing the same, and antiallergic agent containing the same
10/01/1990CA2030534A1 Thionaphthalene derivative and preparation thereof and antiallergy preparation containing the same
09/1990
09/26/1990EP0389359A1 Process for the preparation of cyclic monofunctionalized tetramines
09/26/1990EP0388967A1 Aldose reductase inhibitor
09/18/1990US4957939 Sterile pharmaceutical compositions of gadolinium chelates useful enhancing NMR imaging
09/17/1990CA2012150A1 Chemical compounds
09/12/1990EP0386452A1 Diphenyl heteroalkyl derivatives, their preparation and medicinal and cosmetic preparations prepared therefrom
09/12/1990EP0386451A1 Oxygen-bearing diphenyl heteroalkanes, process for their preparation and use
09/11/1990US4956469 Preparation of substituted tetrazolinones
09/11/1990US4956376 Tetrazole carboxylic acids and esters and inhibition of blood platelet aggregation therewith
09/11/1990CA1273940A1 Process for producing phenylene derivatives
09/07/1990WO1990010030A1 Substituted 5-amidotetrazoles
09/04/1990USH817 Photographic light-sensitive material
09/04/1990US4954523 Benzophenone oxime ether compounds, pharmaceutical compositions and treatment methods
09/04/1990US4954518 4H-1-benzopyran-4-one derivative or its salt, process for producing the same and pharmaceutical composition comprising the same as active ingredient
09/04/1990US4954514 (Di-tert-butylhydroxyphenyl)thio derivatives and antiarterioschlerosis compositions thereof
09/04/1990US4954513 Leukotriene antagonists
08/1990
08/29/1990EP0384747A1 Pharmaceutical or veterinary preparations of substituted hexenoic acid derivatives
08/28/1990US4952599 Phenylthioureas, phenylisothioureas, phenylcarbodiimides, pesticidal compositions containing them and their use in pest control
08/28/1990US4952289 Macrocyclic amine complexes for ligand extraction and generation
08/23/1990WO1990009989A1 Derivatives of n-phenylbenzamide with anti-ulcer and anti-allergy activity and a method for their preparation
08/23/1990WO1990009987A1 Polynitrogenous derivatives and their metallic complexes which can be used for oxygen fixation
08/23/1990WO1990009379A1 Aza-macrocycles and processes for their preparation
08/23/1990CA2027578A1 Polynitrogen derivatives and their metal complexes used for oxygen fixation
08/21/1990CA1273010A1 Carbapenem process
08/16/1990EP0382583A1 Aza macrocycles and processes for their preparation
08/14/1990USRE33300 Leukotriene antagonists; antiallergens
08/14/1990USRE33298 1-(2-oxyaminosulphonylphenylsulphonyl)-3-heteroaryl-ureas
08/14/1990US4948714 Processing of photographic silver halide materials
08/14/1990US4948439 Composition and process for inflating a safety crash bag
08/10/1990CA2008401A1 Oxidized diphenyleteroalkanes , the preparation and use thereof
08/10/1990CA2008042A1 Diphenylheteroalkyl derivatives, the preparation thereof and drugs and cosmetics prepared therefrom
08/09/1990WO1990008760A1 Use of hexatriene derivatives for the manufacture of preparations for treating acne, psoriasis and light-induced damage to the skin
08/08/1990CN1044461A Process for preparing isothiocyanato functionalized metal complexes
08/07/1990US4946964 Photographic compounds
08/01/1990EP0380331A1 (Di-tert-butylhydroxyphenyl)-thio derivatives, their preparation and use
08/01/1990EP0263861B1 Lysine salt of the gadolinium-dota complex and its applications to diagnosis
07/1990
07/31/1990US4945099 Leukotriene antagonist
07/25/1990CN1044096A Process for preparing mono-n-alkylated polyazamacrocycles
07/25/1990CN1044095A Macrocyclic bifunctional chelants, complexes thereof and their antibody conjugates
07/17/1990CA1271767A1 DOPAMINE-.beta.-HYDROXYLASE INHIBITORS
07/12/1990WO1990007342A1 Process for preparing isothiocyanato functionalized metal complexes
07/12/1990WO1990007261A2 Process for preparing mono-n-alkylated polyazamacrocycles
07/03/1990US4939279 Leukotriene antagonists
07/03/1990US4939265 Intermediates and process for the preparation of antihypercholesterolemic tetrazole compounds
07/03/1990US4939141 (Fused) benz (thio) amides and pharmaceutical compositions, thereof
06/1990
06/28/1990WO1990006776A1 Macrocyclic aminophosphonic acid complexes, their preparation, formulations and use
06/27/1990EP0375560A1 Aryloxypropanolaminotetralines, process for their preparation and pharmaceutical compositions containing same
06/27/1990EP0375376A2 Macrocyclic aminophosphonic acid complexes, their preparation, formulations and use
06/27/1990EP0375348A1 Leukotriene antagonists
06/27/1990EP0374947A1 Process for preparing isothiocyanato functionalized metal complexes
06/27/1990EP0374929A1 Process for preparing mono-n-alkylated polyazamacrocycles
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