Patents
Patents for C07D 307 - Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom (47,108)
03/1991
03/06/1991EP0415887A2 3-Phenyl-benzofuran-3-ones
03/06/1991EP0415641A1 Substituted glutaramic acids and derivatives
03/06/1991EP0276329B1 2,3-diaminoacrylonitrile derivatives
03/06/1991CN1049654A N-(substituted benzyloxy) imine derivatives, process for production thereof
03/06/1991CA2024581A1 Substituted n-benzylpiperidine amides
03/05/1991US4997958 Process for producing ascorbic acid 6-esters
03/05/1991US4997956 Certain 2,3-dihydro-2;2-dimethyl-benzothiophene carboxylic acids which are intermediates
03/05/1991US4997955 Preparation of 1,1-disubstituted ethylene compounds
03/05/1991US4997847 Biologically active compounds
03/05/1991US4997843 Platelet activating factor, anticoagulants
03/01/1991CA2023495A1 Herbicidal glutaramic acids and derivatives
03/01/1991CA2021727A1 Single pot process for mixing fluoroanthranilic acid
02/1991
02/27/1991EP0414342A2 Process for the manufacture of haloalkyllactones and substituted oxazolidinone intermediates
02/27/1991EP0414153A1 N-(substituted benzyloxy)imine derivatives, process for the production thereof, use thereof, and method of use thereof
02/27/1991EP0414065A2 Process for the preparation of aldehydes
02/27/1991CN1049499A 2,3-dihydro-5-oxy-4,6,7-trimethylbenzofurans 2-(rs)- derivatives with properties of mucus-adjustment and antiischemia
02/27/1991CN1011785B Process for preparing acid additive salts of 2-(2-(aminoethyl) thiomethyl)-5-dimethyl-aminomethyl-furan
02/26/1991US4996288 Cyclobutarene ketoanhydride and ketocarboxy
02/26/1991US4996227 Administering nontoxic antitumor agents
02/26/1991US4996225 Tri-phenyl alkane derivatives and their oestrogenic, anti-oestrogenic and progestanic uses
02/26/1991US4996203 2,5-diaryl tetrahydrofurans and analogs thereof as PAF antagonists
02/26/1991CA1280848C2 Process for preparing amides from nitriles and amines
02/26/1991CA1280753C Process for preparing heterocyclic substituted- phenoxyalkyl isoxazoles and-furans
02/26/1991CA1280750C Phenyl and heterocyclic tetrahydropyridyl and piperazinyl alkoxy-benzheterocyclic compounds as antipsychotic agents
02/21/1991WO1991001969A1 Phenyl-glycine derivatives
02/21/1991WO1991001968A1 Phenyl-glycine derivatives
02/21/1991WO1991001724A1 Renal-selective prodrugs for the treatment of hypertension
02/21/1991WO1991000725A3 Amino acid analog cck antagonists
02/20/1991EP0413668A2 New 2,3-dihydro-5-oxy-4,6,7-trimethylbenzofuranes 2-(RS)-substitutes, useful as antioxidizing pharmaceutical products having mucoregolating and anti-ischemic properties
02/20/1991EP0413415A1 Carboxylic acids and derivates thereof
02/20/1991EP0413343A2 Furan derivatives
02/20/1991EP0413223A2 N-heterocyclomethyl-spiroheterocyclic compounds and fungicide containing them
02/20/1991CN1049340A Intermediate for saccharoascorbic acid esters, production method
02/20/1991CN1049339A Process for recovery of tetrahydrofuran from mixtures containing tetrahydrofuran, lower alkanols and water
02/20/1991CN1049338A Preparation of amino ketone compound
02/19/1991US4994585 Method of preparing (S)-γ-hydroxymethyl-α, β-butenolide
02/19/1991US4994580 Producing bis (alicyclic) thioethers
02/19/1991US4994572 Synthesis of nojirimycin derivatives
02/19/1991US4994512 Poly-methine compounds, condensation polymer having a poly-methine compound admixed therein and shaped articles produced therefrom
02/19/1991US4994493 Treatment of cerebral edema
02/19/1991US4994473 Pyridyl containing insecticides
02/19/1991CA2023522A1 2,3-dihydro-5-oxy-4,6,7-trimethylbenzofuranes 2-(rs)-substitutes, useful as antioxidizing pharmaceutical products having mucoregulating and anti-ischemic properties
02/19/1991CA1280436C Synergistic antioxidant mixtures
02/19/1991CA1280417C Fungicidal acrylates and preparation thereof
02/19/1991CA1280416C Antioestrogenic phenol derivatives
02/19/1991CA1280414C Isoprenoidamine derivatives and antiulcer agents
02/14/1991DE3926769A1 New piperidino:methyl-substd. oxa- and thia-spiro:decane cpds. - e.g.3 8-tert butyl-2-((4-tert. butylpiperidino) methyl)-1,4-di:oxa-spiro(4.5):decane, useful as fungicides
02/13/1991EP0412366A1 Process for the preparation of 2,5-dihydrofurans
02/12/1991US4992579 Catalytic oxidation using cerium, cobalt, manganese, zirconium, bromine containing catalyst
02/12/1991US4992568 Synthesis of benzofurans
02/12/1991US4992562 Renin inhibitors containing 5-amino-2,5-disubstituted-4-hydroxypentanoic acid residues
02/12/1991US4992518 Polymers obtained by heating allybicyclo[2.2.1]hept-5-ene-2-carboxylic acid amides for between 6 and 60 hours at 150°-300° C.
02/12/1991US4992467 Treating cardiac, pancreatic and renal allograft rejection and diabetes
02/12/1991US4992464 Heteroaryl N-hydroxy amides and ureas with polar substituents as 5-lipoxygenase inhibitors
02/12/1991CA1280115C Benzo b thiophen and benzo b furancarboxamides, their preparation and medicaments comprising the same
02/07/1991WO1991001313A1 Process for producing dipotassium ascorbate-2-sulphate
02/07/1991WO1990015069A3 Amino acid derivative anticonvulsant
02/07/1991DE3925690A1 Prodn. of o-sulpho-benzoic anhydride - comprises reacting o-sulpho-benzoic acid salt with thionyl chloride in nitro:ethane, useful as pharmaceutical and dyestuff intermediate
02/06/1991EP0411409A1 Tert.-butylesters of substituted 3-hydroxyproponoic acid
02/06/1991EP0411403A1 Method of preparing (S)-gamma-hydroxymethyl-alpha, beta-butenolide
02/06/1991EP0411184A1 Ascorbic acid derivative
02/06/1991EP0411182A1 Ascorbic acid derivative
02/06/1991CN1049011A Ester production by hydrogenation of carboxylic acids and anhydrides
02/05/1991WO1991001981A1 Process for preparing tetrahydrofuran
02/05/1991USRE33533 Polycyclic heterocyclic compounds, a process for their preparation and their use in human and veterinary medicine
02/05/1991US4990703 Novel tetrahydronaphthalene and indane derivatives
02/05/1991US4990668 Reacting selected dioxolane with hydrohalic acid and organic acid, then with amine
02/05/1991US4990647 Catalytic coupling of two different halogenaromatics
02/05/1991US4990631 Reacting trialkyl orthoformate with boron trifluoride and lactone, then with alkoxide or alkanol and base
02/05/1991US4990630 Chemical intermediates/
02/05/1991US4990178 Herbicide, its preparation and use
02/05/1991CA2064561A1 Process for preparing tetrahydrofuran
01/1991
01/30/1991EP0410758A2 Process for producing optically active propionic acid derivatives
01/30/1991EP0410447A2 Liquid crystalline compounds, liquid crystal compositions containing the same and use thereof
01/30/1991EP0410380A2 Novel process for the synthesis of 2-fluoro-1-olefins
01/30/1991EP0410176A1 2-Aminopentanoic acid compounds and their use as immunosuppressants
01/30/1991CN1048845A Certain glyoxyl-cyclohexendiones
01/29/1991US4988828 Phenoxypropyl derivatives
01/29/1991US4988826 Process for intermediates for insecticidal compounds
01/29/1991US4988729 Pesticides based on substituted aminomethylheterocyclic compounds
01/29/1991US4988693 Fungicide compositions
01/29/1991US4988526 Flavors for foods, organoleptic
01/29/1991US4988496 Metal radionuclide chelating compounds for improved chelation kinetics
01/29/1991CA1279574C Process for lubricating water-soluble vitamin powders
01/28/1991WO1991001964A1 Ester production by hydrogenation of carboxylic acids and anhydrides
01/28/1991CA2036380A1 Ester production by hydrogenation of carboxylic acids and anhydrides
01/26/1991CA2021521A1 Process for the synthesis of 2-fluoro-1-olefins
01/25/1991WO1991001312A1 Novel photoactive compounds
01/25/1991CA2065005A1 Photoactive compounds
01/24/1991WO1991000859A1 Method of producing dipotassium-ascorbate-2-sulphate
01/24/1991WO1991000858A1 Pharmaceutically active compounds
01/24/1991DE4021503A1 New optically active R-2-di:benzo:furan-3-oxy-propionic acid derivs.
01/23/1991EP0409413A2 Diaryl ether heterocycles
01/23/1991EP0409350A2 Certain glyoxyl-cyclohexendiones
01/23/1991EP0409147A2 Process for the preparation of tetronic acid esters
01/23/1991EP0408760A1 New hydroxylamine derivative
01/23/1991EP0408749A1 Derivatives of 3,18-dihydroxy-9,13-epoxylabdane, method of obtaining them and a hemostatic pharmaceutical preparation based thereon
01/22/1991US4987239 Process for the production of anhydrides
01/22/1991US4987238 Process for the preparation of high-purity 5,5'-[2,2,2-trifluoro-1-(trifluoromethyl)-ethylidene]bis-1,3-isobenzofurandione
01/22/1991US4987233 Process for preparing herbicidal ureas and insecticidal carbamates and carbamate derivatives