Patents
Sitemap › C07 - Organic chemistry › C07D - Heterocyclic compounds › C07D 498 - Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
Patents for C07D 498 - Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms (21,960)
12/1981
12/29/1981US4308268 Maytansinoids, pharmaceutical compositions thereof and method of use thereof
12/22/1981US4307092 1-Oxo-5H-pyrimido[2,1-C]benzoxazine-2-carboxylic acid esters
12/22/1981US4307016 Demethyl maytansinoids
12/22/1981CA1114827A1 Process for 3beta-iminoazetidin-2-ones
12/16/1981EP0041817A1 Benzamide derivatives, process for their preparation and pharmaceutical compositions containing them
12/15/1981US4305941 Rifamycin XII derivatives, their preparation and anti-bacterial compositions thereof
12/15/1981US4305877 Aldose reductase enzyme inhibitor for treatment of chronic diabetic complications
12/09/1981EP0041215A2 Imidazoazolalkenyl carboxamides, intermediates for their preparation, their preparation and their use as medicaments
12/01/1981CA1113466A2 0-2-isocephem antibacterial agents and processes and intermediates for their production
11/1981
11/24/1981US4302601 Aromatic ketones having cardiovascular activity
11/17/1981US4301287 Heterocyclic compounds
11/17/1981US4301282 1-Oxa-β-lactam antibiotics
11/17/1981US4301281 7,8-Dihydro-2,5,8-trisubstituted-7-oxo-pyrido[2,3-d]-pyrimidine-6-carboxylic acid amides
11/04/1981EP0039190A1 2-(1-Piperazinyl)-4-pyrimidinamines and related compounds
11/03/1981US4298741 Dethiapenicillin antibiotics
11/03/1981US4298692 Culture of strain of nocardia derived from streptomyces
11/03/1981CA1111854A1 Oxazolinoazetidinylbutyric acid derivatives
10/1981
10/29/1981WO1981003022A1 2-(1-piperazinyl)-4-pyrimidinamines
10/29/1981EP0056027A1 2-(1-piperazinyl)-4-pyrimidinamines
10/27/1981US4297498 Useful as hypotensive agents
10/27/1981US4297280 4,1-Benzoxazepines
10/27/1981CA1111428A1 4-carbamoyl derivatives of 1-oxa-3-oxo-4,8-diaza- spiro[4,5]decanes
10/27/1981CA1111424A1 Photochromic compounds
10/14/1981EP0037784A1 Indolobenzoxazine derivatives, their salts, process for their preparation, their use as medicaments and compositions containing them
10/13/1981US4294757 Bleaching cellulose fibers and addition of alkali metal polyphosphates and alkali metal diethylenetriamine penta(methylene phosphonat)
10/13/1981CA1110621A1 Rifamycin compounds
10/06/1981US4293555 6- and 6,6-Disubstituted-2-substituted-oxapen-2-em-3-carboxylic acids
10/06/1981CA1110235A1 Streptovaricin c derivatives
09/1981
09/29/1981CA1109873A1 O-2-isocephem antibacterial agents and processes and intermediates for their production
09/16/1981EP0035749A1 Heterocyclic compounds, their preparation and pharmaceutical compositions containing them
09/08/1981US4288438 Nitrogen-containing heterocyclic ring derivatives and analgesic and anti-inflammatory compositions and methods employing them
09/01/1981CA1108136A1 Antibacterial agents
09/01/1981CA1108135A2 Antibacterial agents
09/01/1981CA1108128A1 Cyclization process for an ergot alkaloid
08/1981
08/26/1981EP0034546A1 Cycloheptindole derivatives and their acid-addition salts, their preparation, their use as medicaments and compositions containing them
08/25/1981US4286093 Multistage from 7-amino-5-methylthio-(1,2,5)-oxadiazolo or thiadiazolo(3,4-d) pyrimidine
08/25/1981CA1107736A1 Heterocyclic compounds which are gaba-agonists and production of same
08/19/1981EP0034015A2 Pharmaceutically active compounds
08/19/1981EP0033767A1 Indolobenzoxazines, processes for preparing and pharmaceutical compositions containing the same
08/18/1981US4284778 Nitrogen-containing heterocyclic ring derivatives
08/18/1981CA1107212A1 Antibiotic c-15003
08/04/1981US4282358 Process for the production of substituted N-methylbenzoxazines
08/04/1981CA1106374A2 0-2-isocephem antibacterial agents
07/1981
07/28/1981US4281002 Antibiotics
07/21/1981CA1105471A1 Process for 3beta-aminoazetiden-2-ones
07/21/1981CA1105470A1 Process for 3beta-aminoazetiden-2-ones
07/14/1981US4278793 Cephem derivative
07/14/1981US4278676 Heterocyclic compounds
07/14/1981CA1105007A1 Ergot peptide alkaloid derivatives
07/08/1981EP0031796A2 4-Heterocyclyl-4'-vinyl-stilbenes
07/08/1981EP0031430A2 A method for the production of antibiotic C-15003 P-3
07/07/1981US4277354 Inhibitors of corrosion of copper
07/07/1981US4277353 Oil-soluble substituted mono and bicyclic oxazolidines, their preparation and use as additives for functional fluids
06/1981
06/30/1981US4276417 Treatment of vascular-condition hypertension
06/30/1981US4276292 Antiallergens
06/30/1981CA1104134A1 Oxadiazolotriazine derivatives
06/30/1981CA1104131A1 4-desoxy-thiazolo-¬5,4-c|rifamycin derivatives, a process for preparing them and their use as antimicrobial agents
06/16/1981CA1103245A1 Process for the manufacture of novel oxadiazolopyrimidine derivatives
06/09/1981CA1102798A1 Production of maytansinoids
06/02/1981US4271296 Oxazolines
06/02/1981US4271295 Oxazolines
06/02/1981CA1102335A1 1-oxa-4,8-diazaspiro[4,5]decanes, their production and their use as agents for protection against light
05/1981
05/26/1981US4269873 Penicillin derivatives
05/20/1981EP0028683A1 Antibiotic C-15003 PHO and production thereof
05/13/1981EP0028318A1 Ethers based on polyalkyl-1-oxa-diazaspirodecanes, their preparation, their use and synthetic polymers stabilized therewith
05/12/1981US4267342 Inhibitors of oxidoreductase enzymes; nervous system disorders and vision defects caused by diabetes
05/12/1981US4267323 Heterocyclic chemical compound 6-phenyl-[1,2,3]-oxadiazolo-(4,5 d)-pyridazine-7(6H)-one and process for producing it
05/12/1981US4267188 5-Substituted-1-carba-pen-2-em-3-carboxylic acid
05/12/1981US4267113 Antitumor agents
05/12/1981CA1100963A1 No translation available
05/06/1981EP0028017A1 3-Piperidinone-4-carboxylic acid derivatives
05/06/1981EP0027908A2 2-Hydroxyalkyl-3,4,5,trihydroxy piperidines, processes for their preparation and their use as medicaments
05/05/1981US4265814 Matansinol 3-n-hexadecanoate
04/1981
04/28/1981US4264621 5-Substituted-3-(2-aminoethylthio)-6-(1-hydroxyethyl)-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid
04/28/1981US4264597 Fungicides
04/28/1981US4264596 Maytansinoids, pharmaceutical compositions thereof and method of use thereof
04/28/1981CA1100131A1 Pyrazinobenzoxazepines and pyrazinobenzothiazepines
04/22/1981EP0027279A1 Isoxazolo(5,4-C)pyridines
04/22/1981EP0027214A1 Imidazodiazepine derivatives, process and intermediates for their preparation, medicaments containing them and their therapeutic application
04/21/1981US4263505 Polyalkylpiperidine-spirooxazolones and their use as light stabilizers
04/21/1981US4263404 Antibiotics from nocardia
04/21/1981US4263294 Antitumour agents, antibiotics
04/21/1981CA1099715A1 1-oxadethiacepham compounds
04/21/1981CA1099712A1 Antihypertensive polyfluorohydroxyisopropyl bicyclic and tricyclic carbostryrils
04/16/1981WO1981000961A1 Peptidic alcaloids of the ergot,preparation process thereof,pharmacological compositions containing them and therapeutic utilization thereof
04/15/1981EP0026899A1 Peptide ergot alkaloids, process for their preparation, drugs containing them and their use in therapy
04/14/1981CA1099267A1 Cyclic derivatives of 1,4-benzoxazine and 1,4- benzothiazine and process for their preparation
04/14/1981CA1099265A1 Process for the preparation of 3 iodo - and 3- bromorifamycin s
04/14/1981CA1099259A1 Polycyclic nitrogenous compounds
04/08/1981EP0026338A1 Antibiotic C-15003 PHM, production thereof and microorganisms for its production
04/07/1981US4260627 1-, 6- And 2-substituted-1-carba-2-penem-3-carboxylic acids
04/07/1981US4260623 Hexahydro-1-arylspiro(3H-oxazolo(3,4-A)pyridine-3,4'-piperidene) antidepressants, pharmaceutical compositions thereof and method of use thereof
04/07/1981US4260622 Animal feedstuffs employing 3,4,5-trihydroxypiperidines
04/07/1981US4260608 Antimicrobial, antimitotic, and antitumor agents
04/01/1981EP0026044A1 Amine salt of clavulanic acid, its preparation and use
04/01/1981EP0025898A2 Antibiotic C-15003 PND-0 and production of antibiotic C-15003 PND
04/01/1981EP0025867A1 Alkylated diazaspirodecanes, their preparation and their use as light stabilisers
03/1981
03/31/1981US4259485 Crystallization process
03/31/1981US4259342 Hypotensive, sedative, antitussive, antiinflammatory
03/31/1981US4259235 Tricyclic nitrogenous compounds having string plant growth regulating properties
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