| 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) |
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| 04/24/1991 | EP0424064A1 Chiral azabicyloheptanone and a process for their preparation |
| 04/24/1991 | EP0423714A2 Hair revitalizing agent |
| 04/24/1991 | EP0423221A1 Immunosuppressive agents. |
| 04/24/1991 | CA2028209A1 Quinolone compounds and a process for their preparation |
| 04/23/1991 | US5010198 Intermediates for the synthesis of benzoxazol- and benzothiazolamine derivatives, useful as anti-anoxic agents |
| 04/23/1991 | US5010076 1,7-fused 1H-indole-2-carboxylic acid-N-(1,4-benzodiazepin-3-yl)amides |
| 04/23/1991 | CA1283415C Bicyclic amide acetals are prepared from organic nitriles and dialkanol amines at below about 140 c and product is isolated by solvent extraction |
| 04/18/1991 | WO1991004738A1 Dibenzofurancarboxamides |
| 04/17/1991 | EP0422485A2 Quinolone carboxylic acid derivatives, process for their preparation and their use |
| 04/17/1991 | CN1012376B Process for producing 10-hydroxy camptothecine by biotransformation |
| 04/16/1991 | CA1283104C Trans-benzopyran-[4,3b]-1,4-oxazine derivatives |
| 04/13/1991 | CA2027204A1 Quinolonecarboxylic acid derivatives, process for their preparation and their use as antiviral agents |
| 04/12/1991 | CA2024844A1 Method for azide displacement of alpha-triflates of 1,5-lactones |
| 04/10/1991 | EP0421774A2 Process for production of optically active 2-(tetrahydropyran-2-yloxy)-1-propanol |
| 04/09/1991 | US5006148 N-aryl-substituted nitrogen-containing heterocycles, and their use as herbicides and plant growth regulators |
| 04/09/1991 | CA1282780C Alkyl-substituted benzoxazinorifamycin derivative, process for preparing the same and antibacterial agent containing the same |
| 04/04/1991 | CA2000129A1 Substituted indazole arthropodicides |
| 04/03/1991 | EP0420707A1 Compositions to be used to reduce hair-loss and to induce and stimulate its growth, containing derivatives of 2-aminopyrimidine 3-oxide and new compounds derived from 2-aminopyrimidine 3-oxide |
| 04/02/1991 | CA1282415C Azetidin-2-on derivatives and process for production thereof |
| 03/27/1991 | EP0419348A1 Process for the synthesis of oxazolopyridinderivatives |
| 03/26/1991 | US5003070 Substituted azacyclohexyl derivatives of rifamycins |
| 03/21/1991 | CA2024852A1 Process for the synthesis of oxazolopyridine derivatives |
| 03/20/1991 | EP0417534A1 Pyrido[2,3-b][1,4]benzoxazepin (and thiazepin)-6(5H)-ones and thiones and their use in the prevention or treatment of AIDS |
| 03/20/1991 | EP0417128A1 Photochromic compound and articles containing the same |
| 03/20/1991 | CN1050023A Process for preparation of cephalosporin derivative |
| 03/19/1991 | US5001129 Oxazoloquinoline compounds and therapeutic application thereof |
| 03/15/1991 | WO1991004025A1 Novel macrocyclic compounds and novel method of treatment |
| 03/15/1991 | CA2065425A1 Macrocyclic compounds and novel method of treatment |
| 03/13/1991 | EP0416814A2 Cephalosporin compounds, process for their preparation, pharmaceutical compositions and intermediates |
| 03/07/1991 | WO1991002736A1 Macrocyclic compounds |
| 03/07/1991 | WO1991002735A1 Chemical compounds based on a netropsin or distamycin molecule coupled with an intercalating agent, method for preparing said compounds and pharmaceutical compositions containing same |
| 03/07/1991 | WO1991002526A1 Azabicyclo quinolone carboxylic acids |
| 03/06/1991 | EP0415304A2 Dipyrido[3,2-b:2',3'-e][1,4]oxazepin (and thiazepin)-6(5H)-ones and their use in the prevention or treatment of aids |
| 03/06/1991 | EP0415303A2 Pyrido [2,3-b][1,5]benzoxazepin (and thiazepin)-5(6H)-ones and -thiones and their use in the prevention or treatment of HIV infection |
| 03/06/1991 | CN1049663A Pyrroloquinoline compounds |
| 03/05/1991 | US4997937 Fiber-reactive dioxazine dyes containing two vinylsulfonyl moieties |
| 03/05/1991 | US4997936 Antibiotics |
| 03/05/1991 | US4997831 Lactam derivatives |
| 03/01/1991 | CA2024072A1 Pyrido [2,3-b] [1,4]benzoxazepin (and thiazepin) -6(5h)-ones and -thiones and their use in the prevention or treatment of aids |
| 03/01/1991 | CA2024055A1 Dipyrido/3,2-b:2'3'-e//1,4/oxazepin (and thiazepin)-6(5h)-ones and-thiones and their use in the prevention or treatment of aids |
| 02/27/1991 | EP0414422A2 2-Oxo-1-oxa-8-azaspiro [4,5] decane derivatives, processes for their preparation and pharmaceutical compositions thereof |
| 02/27/1991 | EP0414421A2 1-Oxa-2-oxo-8-azaspiro[4,5] decane derivatives, processes for their preparation and pharmaceutical compositions thereof |
| 02/27/1991 | EP0414023A2 Pyrroloquinoline compounds |
| 02/27/1991 | EP0414018A2 Process for the preparation of dehydrocycloclausenamide and its derivatives in the racemic form and as optically active (+)- or (-)-enantiomers |
| 02/27/1991 | CN1049503A Process for preparation of macrocyclic compounds |
| 02/27/1991 | CN1049501A Azabicyclo quinolone carboxylic acids |
| 02/23/1991 | CA2023726A1 Pyrroloquinoline compounds |
| 02/21/1991 | WO1990011782A3 Immunoconjugates and prodrugs and their use in association for drug delivery |
| 02/20/1991 | EP0413532A2 Macrocyclic compounds |
| 02/20/1991 | EP0413516A2 4-Methylene-1-oxa-2-oxo-8-azaspiro[4,5]decane derivatives, pharmaceutical compositions containing them and processes for preparing them |
| 02/20/1991 | EP0413455A2 Azabicyclo quinolone carboxylic acids |
| 02/20/1991 | EP0413300A1 Pyrido [3,4-b][1,4] benzoxazepines, a process for their preparation and their use as medicaments |
| 02/20/1991 | EP0412988A1 Fused polycyclic compounds, compositions, methods of manufacture and their use as paf antagonists, antihistamines and/or antiinflammatory agents |
| 02/20/1991 | CN1049349A 2-oxo-1-oxa-8-azaspiro (4,5) decane derivatives, pharmaceutical compositions containing them and process for preparing same |
| 02/20/1991 | CN1049348A 2-oxa-1-oxo-8-azaspiro (4,5) decane derivatives, pharmaceutical compositions containing them and process for preparing same |
| 02/20/1991 | CN1049347A 2-oxa-1-oxo-8-azaspiro ¾4,5 decane derivatives, pharmaceutical compositions containing them and process for preparing same |
| 02/19/1991 | US4994452 Hexahydro-1H-quino[4,3,2-ef][1,4]benzoxazepines and related compounds |
| 02/19/1991 | US4994395 Determination of potassium cations |
| 02/19/1991 | CA2023485A1 Macrocyclic compounds |
| 02/17/1991 | CA2023312A1 Pyrido {3,4-b] [1,4]benzoxazepines, a process for their preparation and their use as medicaments |
| 02/13/1991 | EP0412899A2 Oxazolo pyridine derivatives, process for their preparation and pharmaceutical compositions containing them |
| 02/13/1991 | EP0412898A1 Oxazolo-pyridine derivatives, process for their preparation and pharmaceutical compositions containing them |
| 02/13/1991 | EP0412822A2 4,4-Disubstituted piperidine derivatives, processes for their preparation and pharmaceutical compositions thereof |
| 02/13/1991 | EP0412821A2 1-oxa-2-oxo-3,8-diazaspiro[4,5]decane derivatives, pharmaceutical compositions containing them and processes for preparing them |
| 02/13/1991 | EP0412820A2 2-Oxo-1-oxa-8-azaspiro[4,5] decane derivatives, processes for their preparation and pharmaceutical compositions thereof |
| 02/13/1991 | CN1049120A Process for producing synthetic materials |
| 02/13/1991 | CN1011572B Process of the preparation of basic formulations of quinolonecarboxylic acids |
| 02/12/1991 | US4992551 DC-52 derivatives |
| 02/12/1991 | US4992436 Spiro-azabicyclic muscarinic agonists |
| 02/12/1991 | US4992381 Method of detecting electrolytes in an aqueous test sample using chromogenic hemispherands and test device therefor |
| 02/11/1991 | CA2023027A1 2-oxo-1-oxa-8-azaspiro/4,5/decane derivatives, pharmaceutical compositions containing them and process for preparing the same |
| 02/11/1991 | CA2023019A1 1-oxa-2-oxo-8-azaspiro/4,5/decane derivatives, pharmaceutical compositions containing them and process for preparing the same |
| 02/11/1991 | CA2023015A1 4-methylene-2-oxo-8-azaspiro /4,5/decane derivatives, pharmaceutical compositions containing them and process for preparing the same |
| 02/11/1991 | CA2023014A1 2-oxo-1-oxa-8-azaspiro /4,5/decane derivatives, pharmaceutical compositions containing them and process for preparing the same |
| 02/08/1991 | CA2022732A1 Oxazolo pyridine derivatives, process for their preparation and pharmaceutical compositions containing the same |
| 02/08/1991 | CA2022594A1 Oxazolo pyridine derivatives, process for their preparation and pharmaceutical compositions containing same |
| 02/06/1991 | EP0411754A2 Medicament for the inhibition of interleukin-1 or tumor necrosis factor production by monocytes and/or macrophages |
| 02/05/1991 | US4990517 7-(1-pyrrolidinyl)-3-quinolone- and -naphthyridonecarboxylic acid derivatives as antibacterial agents and feed additives |
| 02/05/1991 | US4990508 Reduced side effects |
| 01/30/1991 | EP0410389A1 Indolocarbazol and its use |
| 01/30/1991 | CN1048855A Optical resolution method for pyranobenzo oxadiazole |
| 01/29/1991 | US4988709 Quinolone-carboxylic acids as antibacterial agents |
| 01/29/1991 | US4988705 Polycyclic quinoline, naphthyridine and pyrazinopyridine derivatives |
| 01/23/1991 | EP0409165A2 Process for the optical resolution of pyranobenzoxadiazole compounds |
| 01/23/1991 | EP0409069A2 Mesogenic polycyanates and thermosets thereof |
| 01/22/1991 | US4987139 Macrolide immunosuppressant |
| 01/22/1991 | US4986934 Photochromic compound and articles containing the same |
| 01/18/1991 | CA2021280A1 Mesogenic polycyanates and thermosets thereof |
| 01/16/1991 | CN1048545A Substituted benzoxazolinone and benzoxazinone derivatives, processes for their preparation and their use as herbicides |
| 01/15/1991 | US4985557 Optically active pyridobenzoxazine derivatives and intermediates thereof |
| 01/15/1991 | US4985424 Certain substituted 1,7-annelated 1h-indazoles being selective antagonists of 5-ht-receptors |
| 01/09/1991 | EP0407343A2 Method for controlling sea lice |
| 01/09/1991 | EP0407237A2 Indolino-spiro-oxazine photochromic compounds, process for their preparation and photochromic compositions and materials containing them |
| 01/09/1991 | EP0407102A1 Substituted imidazo-fused 5-membered ring heterocycles as angiotensin II antagonists |
| 01/09/1991 | EP0406993A2 Substituted benzoxazolinone and benzoxazinone derivatives, process for their preparation and their use as agent with herbicide activity |
| 01/08/1991 | US4983602 3'-hydroxybenzoxazinorifamycin derivative, process for preparing the same and antibacterial agent containing the same |
| 01/08/1991 | US4983325 High performance nonlinear optical media |
| 01/04/1991 | CA2020074A1 Substituted imidazo-fused 5-membered ring heterocycles as angiotensin ii antagonists |
| 01/02/1991 | EP0405994A2 Synthetic process for FK-506 type macrolide intermediates |
| 01/02/1991 | EP0405976A1 Azole derivatives and antiulcerative composition containing same |