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Matches 901 - 950 out of 1,086

Document Document Title
JP58021635
PURPOSE: To obtain the titled compound useful as an intermediate for synthesizing coenzyme Q in high purity in high yield by one step without causing by- products, by hydrohalogenating 2,3-dimethoxy-5-methylbenzoquinone. CONSTITUTION: 2,...  
JP57206633
PURPOSE: To purify anthraquinone, by oxidizing a crude anthraquinone obtained by oxidizing a Diels-Alder reaction adduct of 1,4-naphthoquinone with butadiene in an aqueous medium in the presence of chlorine dioxide. CONSTITUTION: A Diels...  
JP57203027
PURPOSE: To obtain purified anthraquinone having yellow color and improved purity, by oxidizing crude anthraquinone obtained by the oxidation of the Diels- Alder addition reaction product of naphtoquinone and butadiene, in an aqueous med...  
JP57188542
PURPOSE: To prepare the titled compound useful as a drug, without protecting the side chain ketone group, by using a compound such as 9-acetyl-6,9,11-trihydroxy-7,8,9,10-tetrahydronaphthacene-5, 12-dione, as a raw material. CONSTITUTION:...  
JP57183782
PURPOSE: To prepare the titled compound useful as a synthetic intermediate of α-tocopherol, selectively, by reducing 4-phenyl-2-hydroxy-2-methylbutanal, followed by oxidation and reduction. CONSTITUTION: The compound of formulaI(R1 is l...  
JP57177080
PURPOSE: To obtain the titled composition having improved dispersibility in water and an aqueous solution of an alkali even in the absence of a surfactant, by preparing an aqueous slurry of an organic cyclic compound having a keto and/or...  
JP57175139
PURPOSE: To take out the titled substance from the top of a distilling column and recover and circulate anthraquinone form the bottoms, by melting crude anthraquinone at a specific temperature below a temperature at which the thermal pol...  
JP57171933
PURPOSE: 1,4,4a,9a-Tetrahydroanthraquinone is dissolved in an aqueous alkali solution in the presence of molecular oxygen under heating and the resultant solution is cooled down and kept to a specific temperature, thus producing the titl...  
JP57156432
PURPOSE: To obtain the titled substance useful as an intermediate for synthesizing dye, etc. in high yield for a long time with preparing a small amount of by- products, by oxidizing a diphenylmethane or a benzophenone as a raw material ...  
JP57154141
PURPOSE: To remove the impurities selectively from the crude 1,4-naphthoquinone obtained from the gas produced by the catalytic vapor-phase oxidation reaction of naphthalene, with very little dissolution loss of 1,4-naphthoquinone, by tr...  
JP57145828
PURPOSE: To prepare a 7-OH anthracyclinone derivative by introducing a halogen to the 7-position of a 7-desoxyanthracyclinone derivative, reacting the product with a trifluoroacetic acid metal salt to convert the halogen to OCOCF3 group,...  
JP57144236
PURPOSE: To prepare anthraquinone in high yield, by the catalytic vapor-phase oxidation of a benzophenone compound with an oxygen-containing gas in the presence of a catalyst containing the oxides of vanadium, molybdenum and/or tungsten....  
JP57144235
PURPOSE: To prepare anthraquinone useful as a synthetic intermediate of dyes, etc., in high yield, by using diphenylmethane as the starting material, and oxidizing with an oxygen-containing gas in the presence of a catalyst containing va...  
JP57136582
PURPOSE: To prepare the titled compound useful as vitamin E, without using optical resolution process, in high yield in an industrial scale, through nine steps from natural phytol used as the starting substance via novel intermediates, n...  
JP57131735
PURPOSE: To obtain a quinone useful as a drug in high yield by one process, by reacting 2,3-dimethoxy-5-methyl-1,4-benzoquinone with an carboxylic acid under mild conditions, recovering the unreacted raw materials after the reaction with...  
JP57114547
NEW MATERIAL:The compound of formulaI(R is H, group of formula II W formula IV, etc.) and its acid addition salt. EXAMPLE: 13-Methylaclacinomycin A (a compound of formulaIwherein R is group of formula IV). USE: Antitumor agent. PROCESS: ...  
JP57109739
NEW MATERIAL:The compound of formulaI(R1 is CH3 or OCH3 or OCH3, or two R1 together form -CH=CH-CH=CH-; X is -CH=CH- or -C(C-; Y1 is H, OH, carboxy, amido, cyano, etc.; m is integer 0W3; n is integer 0W10; n' is integer 1W5; k is integer...  
JP57108033
PURPOSE: To obtain muconic acid anhydride, α-pyrone or dimerized product useful for preparing a synthetic high polymer or medicine advantageously, by oxidizing an o-substituted phenol in the presence of a ruthenium catalsyt in an oxygen...  
JP57095932
PURPOSE: To prepare the titled compound useful as an intermediate for the preparation of vitamin K1, K2, coenzyme Q, etc., in high selectivity, suppressing the side reactions effectively, by reacting a phosphoric acid ester with a hydroq...  
JP57070834
PURPOSE: To prepare coenzyme Q useful as a remedy for cardiac insufficiency, rapidly, without side reactions, with simple operation, by the catalytic oxidation of reduced coenzyme Q in a hydrophobic solvent using manganese dioxide. CONST...  
JP57070833
PURPOSE: To prepare the titled compound in high conversion and yield, by the high- temperature vapor-phase reaction of phthalic anhydride or phthalic anhydride and benzene, using a long-life catalyst composed of boria and titania, zircon...  
JP57070832
PURPOSE: To prepare anthraquinone, directly, in high conversion and yield, in one step, by the high-temperature vapor-phase reaction of phthalic anthydride or phthalic anhydride and benzene using a long-life catalyst composed of silica-a...  
JP57062237
PURPOSE: To prepare the titled compound, economically, by the moving bed catalytic reaction of benzene with a mixture of phthalic anhydride and an inert gas at a high temperature, controlling the reaction temperature by the indirect heat...  
JP57059808
PURPOSE: A remedy and preventive for digestive ulcer comprising coenzyme Q as an active ingredient, administrable continously for a long time free from side effects. CONSTITUTION: A remedy and preventive comprising a coenzyme shown by th...  
JP57059827
PURPOSE: To prepare 1,4-naphthoquinone, in high yield, by oxidizing naphthalene with O2 using a catalyst composed of vanadium oxide, an alkali metal sulfate, and alkali metal pyrosulfate supported by a carrier consisting of a silicon oxi...  
JP57056494
NEW MATERIAL:An anthracyclin derivative of formulaI(R1 is H, hydroxyl, lower alkanoyloxy; R is H, residue of aminosaccharide of formula II) or its acid adduct. EXAMPLE: 4-Demethoxy-11-deoxydaunomycin. USE: Antibiotic against gram-positiv...  
JP57050935
NEW MATERIAL:A 1,4-benzoquinone derivative expressed by formula I (R is H or lower alkanoyl: A is formula II, -CH2-CH2- of formula III). EXAMPLE: 5-Methoxy-2-hydroxy-3-(cis-10-pentadecenyl)-1,4-benzoquinone . USE: An anticancer agent and...  
JP57048936
PURPOSE: To prepare the titled substance as crystals, by reducing the acid content of 1,4-naphthoquinone below a specific level, carrying out the Diels-Alder reaction of the naphthoquinone with 1,3-butadiene (BD), removing the excess BD ...  
JP57042649
NEW MATERIAL:A compound shown by the formula [R1 is halogen or -OR2(R2 is H or lower alkanoyl)]. EXAMPLE: 5, 7, 8, 9, 10, 12-Hexahydro-5,12-dioxo-6,11-diol-7,9-cis-diol-9-bromoacetyl naphthacene. USE: An intermediate for preparing 4-desm...  
JP57038744
NEW MATERIAL:The quinone derivative of formula I (m is 11W22; R1 is lower alkyl; R2 is H, lower alkyl, or lower acyl). EXAMPLE: 6-(13-Hydroxytridecyl)-2,3-dimethyoxy-5-methyl-1,4-benzoquin one. USE: It has hypotensive, tissue metabolism ...  
JP57038742
PURPOSE: To prepare the titled substance useful as a raw material of pesticides, etc., economically, in an industrial scale, by oxidizing 1,4,4a,9a-tetrahydroanthraquinone, etc. with molecular oxygen in a solvent using an organic acid su...  
JP57038743
PURPOSE: To collect anthraquinone safely, in high efficiency, in the preparation of anthraquinone by the reaction of phthalic anhydride with benzene, by contacting the produced anthraquinone-containing gas with liquid phthalic anhydride ...  
JP57031637
PURPOSE: To prepare the titled compound economically in an industrial scale, by the catalytic vapor phase reaction of a gas containing benzene and phthalic acid anhydride, using a catalyst obtained by mixing a magnesia-silica mixture wit...  
JP57032242
PURPOSE: The reaction mixture gas after thermal catalysis between benzene and phthalic anhydride is passed through a tubular type cooler at such a flow rate as the precipitating particles do not stick to the tube walls and brought into c...  
JP57024323
PURPOSE: To obtain anthraquinone useful as an intermediate for dyes or an additive for preparing paper or pulp, by reacting inexpensive toluene as a starting material with a gas containing oxygen in the vapor phase in the presence of a c...  
JP57021334
PURPOSE: To obtain the titled compound useful as a raw material for dye, etc. by common reaction operations in high conversion directly, by reacting phthalic anhydride or phthalic anhyride with benzene using a catalyst consisting of sili...  
JP57018641
PURPOSE: To prepare hydroquinone or a quinone derivative useful as a medicine or its intermediate, by reacting a hydroquinone derivative with a halogenoprenyl derivative, and subjecting the reaction product to reductive elimination react...  
JP57017949
PURPOSE: To obtain a sensitive material suitable for use as a thin layer type sensitive material, giving high dye density and capable of preventing color fog by short- time processing by adding a (co)polymer having specified sulfonylhydr...  
JP57008788
PURPOSE: To prepare a coenzyme Q by culturing microorganisms belonging to Pseudomonas genus or Protaminobacter genus. CONSTITUTION: Microorganisms belonging to Pseudomonas genus or Protaminobacter genus, e.g. Pseudomonas N842 (FERM-P No....  
JP57004938
NEW MATERIAL:An anthracycline antibiotic substance, feudomycin B, of formula I (R1 is CH2COCH3 or CH3; R2 is group of formula II or H; when R1 is CH3, R2 is H), and feudomycin aglycone B and C. USE: Carcinostatic agent which remarkably s...  
JP57004929
PURPOSE: To prepare the titled compounds (some of which are novel) from a hydroquinone derivative or a quinone derivative, etc., by chemically modifying the double bond of the terminal prenyl group selectively, introducing a functional g...  
JP56164133
PURPOSE: To obtain high-purity naphthoquinone industrially and advantageously without the formation of by-products, by dissolving crude naphthoquinone in an aromatic hydrocarbon solvent, in a fixed concentration, and controlling the crys...  
JP56161345
PURPOSE: To obtain a quinone compound as a readily-dispersible composition useful as an alkali digesting assistant, etc. for the pulp industry, by mixing a water- insoluble quinone compound with a nonionic surfactant solution in a solven...  
JP56154433
NEW MATERIAL:A quinone compound expressed by formula I (R1 is methyl or methoxy, or two R1 is formed formula II; X is formula III or IV; Y1 is H, OH, carboxyl, amide, N-substituted amide, cyano, etc.; m is an integer 0W3; n is an integer...  
JP56152434
PURPOSE: To obtain the titled high-purity compound directly usable as an intermediate raw material for a dyestuff, by the oxidation of an addition product of 1,4- naphthoquinone with a conjugated diolefin in an aqueous caustic alkali und...  
JP56150014
PURPOSE: An antiallergic agent, capable of suppressing the production and release of SRS-A, and containing a specified quinone. CONSTITUTION: An antiallergic agent containing a quinone of formula I (R is methyl or methoxy, or two R toget...  
JP56147741
PURPOSE: To prepare the titled compound useful as a synthetic raw material of ubiquinones, in high yield and purity, by using an easily available 2,3,4,5-tetraalkoxytoluene as a starting raw material, and oxidizing the raw material. CONS...  
JP56147746
NEW MATERIAL:A compound shown by the formula I (n is 10W21; R is H or lower alkyl). EXAMPLE: 2, 3-Dimethoxy-6-( 12-methoxycarbonyldodecyl )-5-methyl-1, 4-bezoquinone. USE: Having hypotensive actions, tissue metabolism activating actions,...  
JP56145280
NEW MATERIAL:Phenolic compounds having tetrahydrofur-2-yl group on the ortho position. EXAMPLE: 2,3,5-Trimethyl-6-(tetrahydrofur-2-yl)phenol. USE: Intermediate of medicine: they are used as an intermediate of a quinoline useful as an imm...  
JP56142233
PURPOSE: The use of a catalyst of crystalline aluminosilicate in which all or a part of cations are metals of group II and III lanthanide and actinide enables one-step production of the titled compound from phthalic anhydride and benzene...  

Matches 901 - 950 out of 1,086