Patents
Sitemap › C07 - Organic chemistry › C07D - Heterocyclic compounds › C07D 473 - Heterocyclic compounds containing purine ring systems
Patents for C07D 473 - Heterocyclic compounds containing purine ring systems (11,932)
12/1989
12/05/1989US4885301 Purinone derivatives which have bronchodilator, vasodilator and anti-allergic activities
12/05/1989US4885181 Absorbing caffeine from aqueous extract with activated carbon, desorption with acid, washing with water; reuseable carbon
11/1989
11/28/1989CA1263387A2 Medicaments, vicinal dihydroxyalkylxanthines contained therein, process for the preparation of these xanthine compounds and intermediate products suitable for these
11/23/1989EP0343133A1 Derivatives of purine, process for their preparation and a pharmaceutical preparation
11/23/1989EP0342569A1 Heterocyclic 2-alkoxyphenoxysulfonyl urea and their use as herbicides or as plant growth regulators
11/23/1989EP0342568A1 Heterocyclically substituted phenoxysulfonyl urea, process for their preparation and their use as herbicides or as plant growth regulators
11/21/1989US4882435 Pharmaceutical preparations
11/16/1989WO1989010923A1 Derivatives of purine, process for their preparation and a pharmaceutical preparation
11/16/1989WO1989010744A1 Neurologically active compounds
11/15/1989CN1037148A Pyrimidine and purine 1,2-butadiene-4-ols as anti-retroviral agents
11/14/1989US4880820 Viricides, herpes virus
11/14/1989US4880791 Blood disorders
11/14/1989CA1262899A1 2-aminopurine derivatives having anti-viral activity
11/08/1989EP0341066A2 Immunostimulating guanine derivatives, compositions and methods
11/08/1989EP0341065A2 Immunostimulating guanine dervatives, compositions and methods
11/08/1989EP0340778A2 Prodrugs of 2',3'- Didehydro-2',3'-Dideoxynucleosides
11/07/1989US4879296 Xanthine derivatives
11/07/1989US4879277 Antiviral compositions and methods
11/07/1989CA1262685A1 Therapeutic agent for memory disturbance
11/07/1989CA1262683A1 Use of certain compounds in livestock food as growth promotants for better feed utilization and improved carcass composition
11/02/1989WO1989010367A1 Cyclopentyl purine derivatives, intermediates and processes for preparation
11/02/1989EP0339086A1 Electrochemiluminescent rhenium moieties and methods
11/01/1989CN1036765A 6-substituted purinyl piperazine derivatives
10/1989
10/31/1989US4877883 Substituted pyrazoles
10/31/1989US4877631 Process for recovering caffeine absorbed in activated carbon, and a process for decaffeinating coffee
10/25/1989EP0338842A1 Cyclopentyl purine derivatives, intermediates and processes for preparation
10/25/1989CN1036579A Novel acetylenic, cyano and allenic aristeromycin/adenosine derivatives
10/25/1989CN1036575A "bis-(hydroxymethyl) cyclobutyl purines and pyrimidines
10/25/1989CN1036574A Purinyl and pyrimidinyl cyclo-butanes
10/24/1989US4876262 Antiarrhythmia agents
10/24/1989US4876257 6-Substituted purinyl piperazine derivatives useful as cardiotonic and antiarrhythmic agents
10/18/1989EP0337713A2 2-Substituted-4-Substituted-1,3-Dioxolanes, Synthesis and use thereof
10/17/1989US4874862 Bromination with n-bromosuccinimide, treating with hydrazine, reducing, acylating
10/17/1989US4874850 Pharmaceutical preparations
10/17/1989CA1262348A1 1h-indol-3-yl containing 1,3-dimethyl-1h-purine-2,6- diones
10/11/1989EP0336354A1 Heterocyclically substituted alkyl or alkenyl ureas, methods for preparing them and their use as herbicides or plant growth regulators
10/10/1989US4873329 Alkene, alkyne or cycloalkylene derivatives
10/10/1989CA1262248A1 Tertiary hydroxyalkylxanthines, processes for their preparation, medicaments containing them and their use
10/05/1989WO1989009212A1 New 2,3,4-substituted imidazols and 3,4,5-substituted 1,2,4-triazols, preparation and use thereof
10/04/1989EP0335545A2 Pharmaceutical formulations for parenteral use
10/04/1989EP0335381A1 2,3,4-Substituted imidazoles and 3,4,5-substituted 1,2,4-triazoles, their preparation and their use
10/04/1989EP0335355A2 Bis-(hydroxymethyl) cyclobutyl purines and pyrimidines
10/04/1989CN1036015A Process for preparing dideoxycarbocyclic nucleosides
10/03/1989CA1262132A1 Monohydrate of 9-¬4-hydroxy-3-hydroxymethylbutyl-1- yl| guanine and its sodium salt
09/1989
09/27/1989EP0334361A2 Novel acetylenic, cyano and allenic aristeromycin/adenosine derivatives
09/26/1989US4870174 Imidozopyrionidines and their use in pharmaceutical preparations
09/26/1989CA1261833A1 7-hydroxyguanine compounds, process for preparing said compounds, and anti-tumor agent containing the same
09/26/1989CA1261832A1 Process for separating caffeine from caffeine-loaded active carbon
09/26/1989CA1260935A1 6-purinyl n-(2-chlorethyl) carbamate and thiocarbamate and a process for their preparation
09/26/1989CA1260934A1 Purine derivatives
09/19/1989US4868187 Anti-viral N-substituted pyrimidines
09/19/1989US4868186 Bronchodilator agents
09/19/1989CA1259609A1 4-¬(bicyclic heterocyclyl)-methyl and -hetero|- piperidines
09/06/1989EP0331511A1 6-Substituted purinyl piperazine derivatives
09/06/1989EP0330992A2 Novel cyclobutane Derivatives, processes for their preparation and pharmaceutical compositions comprising them
09/06/1989CN1035295A Adenosine derivatives
08/1989
08/30/1989EP0330031A1 Therapeutic agents for the treatment of peptic ulcer disease
08/30/1989EP0330004A1 Nucleoside-type compounds as phosphodiesterase inhibitors
08/29/1989US4861883 Reacting arylazononitrile with formic acid in presence of ammonia, cyclization, removal ammonia, then catalytic reduction
08/29/1989US4861759 Antiviral compositions and methods
08/29/1989US4861564 Method of use of 1,3 disubstituted aromatic cyclohexane imides as chelating agents
08/22/1989US4859680 Pyrimidine derivatives as antiviral compounds
08/22/1989US4859677 Nucleoside analogues having antiviral activity
08/16/1989EP0327766A2 Redox systems for brain-targeted drug delivery
08/15/1989US4857531 Guanine derivatives
08/10/1989WO1989007102A1 Nulceosidetype compounds which are phosphodiesterase inhibitors
08/08/1989US4855466 Purinyl cyclobutanes
08/02/1989CN1034365A Fungicides
08/01/1989US4853386 Inhibitors of srs-a(slow reacting substance of anaphylaxis) from lung tissues
08/01/1989CA1258149A1 Compounds endowed with immunomodulating activity
07/1989
07/27/1989DE3901502A1 Didesoxydehydrocarbocyclic nucleosides
07/26/1989EP0325460A1 Dideoxydidehydrocarbocyclic nucleosides
07/25/1989US4851423 Pharmaceutically active compounds
07/25/1989US4851412 Asthma, arthritis
07/18/1989US4849423 Purine derivatives, medicaments containing them and methods of treating cardiac insufficiencies and irregularities with them.
07/13/1989WO1989006235A1 Pyrimidine and purine 1,2-butadiene-4-ols as anti-retroviral agents
07/11/1989CA1257258A1 Bicyclic heterocyclyl containing n-(bicyclic heterocyclyl)-4-piperidinamines
07/05/1989EP0322854A1 Purinyl cyclobutanes
07/05/1989CN1033632A Novel aristeromycin/adenosine derivatives
07/04/1989US4845215 Purine derivative
07/04/1989US4845102 Therapeutic agent for the treatment of peptic ulcer disease
07/04/1989US4845084 Herpes viruses, aids
07/04/1989US4845081 Prodrugs, uracils
06/1989
06/29/1989WO1989005648A1 Treatment of malignant tumors with 8-chloroadenosine 3',5'-cyclic phosphate, 8-aminoadenosine 3',5'-cyclic phosphate and preparation thereof
06/29/1989WO1989005647A1 Treatment of malignant tumors with 8-aminoadenosine 3',5'-cyclic phosphate and combinations of 8-aminoadenosine 3',5'-cyclic phosphate and 8-chloroadenosine 3',5'-cyclic phosphate
06/28/1989EP0322242A2 Adenosine derivatives
06/20/1989US4840949 Oxadiazole-alkyl-purine derivatives useful as antitussive agents
06/15/1989WO1989005145A1 Method of inhibiting the activity of leukocyte derived cytokines
06/14/1989EP0319854A2 Process for the methylation of xanthins
06/13/1989US4839374 4-((Bicyclic heterocyclyl)-methyl and -hetero)-piperidines
06/06/1989US4837311 Anti-retroviral compounds
06/01/1989WO1989004829A1 Tri- and tetra-substituted-oxetanes and tetrahydrofurans and intermediates thereof
05/1989
05/31/1989EP0318214A1 Tri- and tetra-substituted-oxetanes and -tetrahydrofurans and intermediates thereof
05/24/1989DE3819025A1 Process for the preparation of alkoxybenzene compounds
05/23/1989US4833146 Brains, blood disorders
05/18/1989WO1989004302A1 Electrochemiluminescent rhenium moieties and methods
05/17/1989CN1032939A Process for producing chamical pharmacentical
05/10/1989EP0315401A2 Xanthine derivatives and their preparation and pharmaceutical formulation
05/02/1989US4826981 Process for preparing 9-(2-hydroxyethoxymethyl)-guanine
04/1989
04/26/1989EP0313289A2 Process for the preparation of purine compounds and intermediates therefor
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