| Patents for C07D 473 - Heterocyclic compounds containing purine ring systems (11,932) |
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| 06/11/1991 | US5022916 Substituted sulfonyldiamides, processes for their preparation, and their use as herbicides and plant growth regulators |
| 06/05/1991 | EP0430518A2 Cyclopentane derivatives |
| 06/05/1991 | EP0430300A2 Xanthine derivatives, their production and use |
| 06/05/1991 | EP0430025A2 Xanthine compound, method for preparing thereof, and a pharmaceutical composition comprising the same |
| 06/05/1991 | EP0429611A1 Aminoalkyl maleimides and haptene and antigen derivatives thereof and conjugates with peptides or proteins |
| 06/04/1991 | US5021574 6-substituted purinyl piperazine derivatives |
| 06/04/1991 | US5021437 2-acetylpyridine 5-[(2-chloroanilino)thiocarbonyl]thiocarbonohydrazone compound and salts thereof |
| 06/04/1991 | US5021422 Administering to the skin of humans suffering from psoriasis |
| 06/02/1991 | CA2031328A1 Xanthine derivatives, their production and use |
| 05/28/1991 | CA1284509C2 Intermediates for preparing purine derivatives |
| 05/25/1991 | CA2030776A1 Cyclopentane derivative |
| 05/25/1991 | CA2030112A1 Xanthine compound, method for preparing thereof, and a pharmaceutical composition comprising the same |
| 05/21/1991 | US5017701 Process for the preparation of purine derivatives |
| 05/21/1991 | US5017578 N-heteroaryl-purin-6-amines useful as analgesic and anticonvulsant agents |
| 05/21/1991 | US5017566 Redox systems for brain-targeted drug delivery |
| 05/14/1991 | US5015739 Processes for preparation of cyclopentyl purine derivatives |
| 05/14/1991 | US5015647 Method for treating viral infections |
| 05/14/1991 | US5015284 Alkyl- and alkenylsulfonylureas which are substituted in the heterocycle, and their use as herbicides or plant growth regulators |
| 05/08/1991 | EP0426467A1 Prodrugs of 6-mercaptopurine and 6-thioguanine |
| 05/08/1991 | EP0426021A1 Condensed imidazole derivatives and processes for preparation thereof |
| 05/07/1991 | WO1991006554A1 Nucleoside derivatives |
| 05/07/1991 | US5013829 Stable congener of 2',3'-dideoxyadenosine |
| 05/07/1991 | CA2073063A1 Nucleoside derivatives |
| 05/07/1991 | CA1283910C Histamine h _antagonists |
| 05/01/1991 | CA2028880A1 Condensed imidazole derivatives and processes for preparation thereof |
| 04/30/1991 | US5011842 2-(heterocyclylalkyl)imidazopyridines for treating allergic diseases |
| 04/30/1991 | US5011828 Immunostimulating guanine derivatives, compositions and methods |
| 04/24/1991 | EP0423221A1 Immunosuppressive agents. |
| 04/23/1991 | US5010081 6-thioxanthines |
| 04/20/1991 | WO1991005766A1 2-substituted 2-cyclopentenone and carcinostatic agent and osteogenesis promoter containing the same as active ingredient |
| 04/20/1991 | CA2044179A1 2-substituted-2-cyclopentenone compound and anticancer agent and bone formation accelerator comprising same as active ingredient |
| 04/18/1991 | DE4019559A1 Isolating pure white caffeine from impure soln. - by acidification, contact with active carbon, crystallisation, washing and drying |
| 04/16/1991 | US5008276 Methyl α-(2-substituted)pyrid-3-yl-β-methoxyacrylates, compositions containing them and their use as fungicides |
| 04/10/1991 | EP0421819A1 Therapeutic nucleosides |
| 04/10/1991 | EP0421587A2 Xanthine derivatives used in asthma |
| 04/10/1991 | EP0421221A2 Colour photographic recording material with a DIR coupler |
| 04/09/1991 | CA1282787C Synthesis of aryloxypropanolamines and arylethanolamines |
| 04/07/1991 | CA2027052A1 Therapeutic nucleosides |
| 04/03/1991 | EP0420559A2 Process for the preparation of purine compounds |
| 03/29/1991 | CA2026238A1 Process |
| 03/27/1991 | EP0419135A2 Use of 1,3-di-n-butyl-7-(2-oxopropyl)xanthine for treating disorders resulting from cerebral ischemia |
| 03/27/1991 | EP0418309A1 Oligonucleotide analogs containing sulfur |
| 03/26/1991 | US5002935 Inclusion Complexing Hydroxypropylcyclodextrin with a Dihydropyridine-substituted Drug |
| 03/17/1991 | CA2025358A1 Treatment |
| 03/12/1991 | US4999435 Cationic Surfactants, Drugs, Immunoassay |
| 03/12/1991 | US4999428 Process for preparing cyclopentyl purine derivatives |
| 03/12/1991 | US4999351 Treating cardiac failure and memory deficit |
| 03/12/1991 | CA1281323C Purine derivatives |
| 03/07/1991 | WO1991003477A1 Process for preparing 3,7-dialkyl xanthines |
| 03/07/1991 | CA2053236A1 Process for preparing 3, 7-dialkylxanthines |
| 03/06/1991 | EP0415886A2 Aza compounds |
| 03/06/1991 | EP0415456A2 Xanthine compounds |
| 03/06/1991 | EP0415028A1 Process for the preparation of pure guanine |
| 03/05/1991 | US4997939 Reduction, cyclization |
| 03/05/1991 | US4997925 Enzyme inhibitors, viricides |
| 03/05/1991 | US4997924 5'-deoxy-4',5'-unsaturated-5'-substituted adenosines |
| 03/01/1991 | CA2024137A1 Aza compounds |
| 02/27/1991 | EP0413751A1 Neurologically active compounds |
| 02/27/1991 | CN1049502A Process of preparing antiviral compound |
| 02/26/1991 | US4996317 Caffeine recovery from supercritical carbon dioxide |
| 02/26/1991 | US4996308 Derivatives with unsaturated substitutions for the 5'-hydroxymethyl group |
| 02/26/1991 | US4996215 Piperidine derivative and pharmaceutical composition containing the same |
| 02/21/1991 | WO1990011782A3 Immunoconjugates and prodrugs and their use in association for drug delivery |
| 02/20/1991 | EP0413544A2 Purine derivatives, process for their preparation, pharmaceutical compositions and intermediates |
| 02/20/1991 | EP0413278A2 Use of xanthine derivatives against peptic ulcers |
| 02/20/1991 | EP0412995A1 Cyclopentyl purine derivatives, intermediates and processes for preparation |
| 02/18/1991 | CA2023291A1 Compounds |
| 02/17/1991 | CA2023310A1 Therapeutic agents for the treatment of peptic ulcer disease |
| 02/11/1991 | WO1991001730A2 Use of xanthine-derivatives as inhibitors of induced blood eosinophilia |
| 02/11/1991 | CA2064792A1 Treatment |
| 02/07/1991 | WO1991001319A1 Synthesis of cyclopentene derivatives |
| 02/07/1991 | WO1991001318A1 Synthesis of cyclopentene derivatives |
| 02/07/1991 | WO1991001317A1 Synthesis of cyclopentene derivatives |
| 02/06/1991 | EP0411467A2 Process for the preparation of pure adenin |
| 02/05/1991 | US4990668 Reacting selected dioxolane with hydrohalic acid and organic acid, then with amine |
| 01/30/1991 | EP0410806A1 Novel fluorescent dye |
| 01/29/1991 | US4988703 Viricides of hydroxyethylcyclopropylguanine |
| 01/29/1991 | US4988689 ((Pharmacologically active bicyclic heterocyclic)methyl and -heteroatom) substituted hexahydro-1H-azepines and pyrrolidines |
| 01/24/1991 | WO1991000858A1 Pharmaceutically active compounds |
| 01/23/1991 | EP0409595A2 Process for the preparation of a carbocyclic nucleoside analogue |
| 01/23/1991 | EP0409114A1 Heterocyclic substituted sulfonyl ureas, process for their preparation and their use as herbicides or plant growth regulators |
| 01/23/1991 | CN1011311B Process for preparing 1h-indol-3-yl containing 1,3 dimethyl-1h-purine-2,-6-diones |
| 01/22/1991 | US4987147 Low toxicity |
| 01/20/1991 | CA2021290A1 Process for the preparation of a carbocyclic nucleoside analogue |
| 01/16/1991 | EP0407651A2 Use of 1,3-diisobutyl-8-methylxanthine as a bronchodilator and antiallergy agent |
| 01/16/1991 | CN1048546A Substituted imidazo-fused 6-membered heterocycles as angiotensin ii antagonists |
| 01/10/1991 | WO1991000282A1 Therapeutic nucleosides |
| 01/09/1991 | EP0407217A1 Pharmaceutically active compounds |
| 01/08/1991 | US4983586 Pharmaceutical formulations for parenteral use |
| 01/03/1991 | DE3921271A1 New purine-8-sulphonamide derivs. - useful as herbicides and plant growth regulators |
| 01/02/1991 | CA1278517C Antiviral composition |
| 01/01/1991 | US4981857 Adenosine antagonist |
| 12/27/1990 | WO1990015798A1 Aminoalkyl maleimides and haptene and antigen derivatives thereof and conjugates with peptides or proteins |
| 12/20/1990 | DE3919915A1 Aminoalkylmaleimide und davon abgeleitete hapten- und antigenderivate sowie konjugate mit peptiden oder proteinen Aminoalkylmaleimide and derived hapten and antigen derivatives and conjugates with peptides or proteins |
| 12/19/1990 | EP0402752A1 N-heteroaryl-purin-6-amines, a process for their preparation and their use as medicaments |
| 12/19/1990 | CN1047866A Process for preparation of n-heteroaryl-purin-6-amines and their use as medicaments |
| 12/13/1990 | WO1990015051A1 Pyrrol derivates, their preparation and their use as interceptors of activated dioxygen |
| 12/12/1990 | CN1047676A Antiviral, highly water soluble, stable, crystalline salts of 2',3;-dideoxyinosine monohydrate, 2',3'-dideoxy-2',3'-didehydrothymidine monohydrate and 2',3'-dideoxy-2'-fluoroinosine hemihydrate |
| 12/11/1990 | US4977153 3-aminopropyloxyphenyl derivatives, pharmaceutical compositions containing them and method for the therapy of diseases |
| 12/05/1990 | EP0400974A2 Substituted imidazo-fused 6-membered heterocycles as angiotensin II antagonists |