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Matches 851 - 900 out of 1,081

Document Document Title
JP59025348
PURPOSE: To obtain easily the titled compound having excellent carcinostatic action from a high-purity optical active α-hydroxyketone compound which is obtained by carrying out optical resolution using an optical active α-glycol having...  
JP59016842
PURPOSE: To obtain a purified isoprene derivative in high yield, by dissolving crude isoprene derivative in a mixture of water and an organic solvent, adsorbing the isoprene derivative with a hydrophobic adsorbent, and desorbing with an ...  
JP59012968
PURPOSE: To prepare anthraquinone in high yield, by the catalytic vaporphase oxidation of 2-methylbenzophenone with air or O2-containing gas in the presence of a catalyst containing vanadium oxide and phosphorus oxide. CONSTITUTION: Anth...  
JP59010544
PURPOSE: To improve the yield of the titled compound in catalytically oxidizing 2-methyldiphenylmethane in the vapor phase in the presence of a catalyst containing vanadium, by using a halogen element or compound containing the halogen p...  
JP59010541
NEW MATERIAL:A quinone compound of formula I (R is methyl or methoxyl; Y is formyl, carboxyl, 2W5C alkoxycarbonyl, carbamoyl, mono- or di- 1W4C alkylcarbamoyl or carbamoyloxymethyl) or a hydroquinone derivative thereof. USE: Useful as a ...  
JP59005137
PURPOSE: To prepare the titled compound which can be used as a raw material of an alkylanthraquinone catalyst for the preparation of hydrogen peroxide, without isomerization, by reacting 1,4-naphthoquinone with 1,3,6-octatriene compound....  
JP59001477
PURPOSE: To obtain ubiquinone or convert the ubiquinone into vitamin E, etc. in the presence of an acidic catalyst, by separating the metallic carbonyl part from a reaction product of a carbonyl-alkenylcarbene-metallic complex with an en...  
JP58208248
PURPOSE: To improve the purity of the collected compound in the collection of the titled compound from a reaction product gas obtained by the catalytic vapor- phase oxidation of naphthalene, using an aqueous medium containing maleic acid...  
JP58206540
NEW MATERIAL:The titled inclusion compound showing peaks at approximately 7°, approximately 12°, and approximately 18° in powder X-ray diffraction spectrum, an endothermic peak of melt (decomposition) approximately at 300°C in differ...  
JP58201742
PURPOSE: To obtain anthraquinone industrially in high selectivity for a long time, by catalytically oxidizing 2-methyldiphenylmethane in the vapor phase with air or a gas containing molecular oxygen in the presence of a catalyst prepared...  
JP58198435
PURPOSE: To prepare the titled substance in high yield, by halognating 2-acetyl- 2-hydroxy-5-methoxytetralin, reacting with phtalic anhydride by Friedel-Crafts reaction, and subjecting the reaction product to the reductive dehalogenation...  
JP58188834
PURPOSE: To prepare the titled compound in high selectivity, by the vapor-phase catalytic oxidation of 2-methyldiphenylmethane using a catalyst obtained by supporting a substance having catalytic activity and containing the oxides of V, ...  
JP58180452
NEW MATERIAL:The anthraquinone derivative of formula I (Hn is the number of added hydrogen atoms when the double bond of the benzene ring is hydrogenated; n is 0 or 2). EXAMPLE: 2-(4-Methyl-3-pentenyl)-anthraquinone of formula II. USE: A...  
JP58177931
NEW MATERIAL:The naphthacenequinone derivative of formula I (Hn is number of added hydrogen atoms when the double bond of the benzene ring is hydrogenated; n is 0 or 4). EXAMPLE: 1,1-Dimethyl-1,2,3,4-tetrahydronaphthacene-6,11-dione of f...  
JP58177934
NEW MATERIAL:The benzoquinone derivative of formula I [R1 and R2 are methyl or methoxy; n is 0W21; m is 0 or 1; Z is CH2N(R3)R4 [R3 and R4 are H, alkyl or morpholino of N(R3)R4], COR5 (R5 is α-amino acid residue or glucosamine residue),...  
JP58174313
PURPOSE: To prepare the titled agent administrable continuously because of its low toxicity and useful for the prevention and remedy of especially organofibrosis of mammals, by using a specific 6-substituted-2,3-dimethoxy-5-methyl-1,4-be...  
JP58174342
NEW MATERIAL:The benzoqunone derivative of formula I (A is CO or CH2; one of R1 and R2 is H and the other is methyl; m is 0W21). USE: It has activities to inhibit the protocollagen.proline hydroxylase and suppress the collagen biosynthes...  
JP58174343
NEW MATERIAL:The benzoquinone derivative of formula I [n is 1 or 2; R is H or (substituted alkyl or acyl]. EXAMPLE: 6-Hydroxymethyl-2,3-dimethoxy-5-methyl-1,4-benzoquinone. USE: It has protocollagen.proline hydrolase inhibiting and colla...  
JP58150535
PURPOSE: To carry out the optical resolution of an optically active tertiary alcohol, e.g. 2-acetyl-5,8-dimethoxy-1,2,3,4-tetrahydro-2-naphthol, etc. with a high efficiency, by treating the tertiary alcohol with an acid, e.g. p-toluenesu...  
JP58144346
PURPOSE: The racemic isomer of α-hydroxyketone corresponding the titled compound is selectively reduced under specific conditions and fractionally recrystallized to prepare optically active diol and the diol is oxidized to give the titl...  
JP58124736
PURPOSE: To prepare 2-oxo-5,12-dihydroxy-1,2,3,4-tetrahydro-6,11-naphthacenequin one, by acyloxylating and hydrolyzing a 6-hydroxy-5,12-naphthacenequinone derivative. CONSTITUTION: The objective compound of formula III can be prepared by...  
JP58124789
NEW MATERIAL:A compound of formulaI(W, X, Y and Z are H, fluoro, chloro, bromo, iodo, OH, ≤8C alkoxyl, acetoxyl or cyano). EXAMPLE: 1, 4, 5, 8-Tetramethoxy-2, 3: 6, 7-anthraquinonetetracarboxylic acid dianhydride. USE: A raw material f...  
JP58124735
NEW MATERIAL:The 1,4,5,8-tetrahydroxyanthraquinone derivative of formulaI (R1WR4 are H, ≤8C alkyl or ≤9C acyl). USE: A raw material of a polymeric condensed polycyclic compound useful as a polymer for electronic material. Preferably,...  
JP58124734
PURPOSE: To prepare anthraquinone in one step, by reacting o-xylene with oxygen in vapor phase in the presence of a solid oxidation catalyst and/or a phosphate-containing catalyst. CONSTITUTION: Antraquinone is prepared by the vapor-phas...  
JP58124733
PURPOSE: To prepare an aqueous solution of vitamin K which can be stored stably for a long period without causing clouding and precipitation of crystals, by adding a glycerol fatty acid monoester derivative together with a nonionic surfa...  
JP58124790
NEW MATERIAL:A compound of formulaI(U, V, W, X, Y and Z are H, fluoro, chloro, bromo, iodo, OH, ≤8C alkoxyl, acetoxyl or cyano). EXAMPLE: 1, 4, 5, 8, 9, 10-Hexamethoxy-2, 3: 6, 7-anthracenetetracarboxylic acid dianhydride. USE: A raw m...  
JP58121238
PURPOSE: To prepare anthraquinone, in one step, economically in an industrial scale, by reacting toluene with oxygen in vapor phase in the presence of a catalyst containing Ag, Fe, Mo and/or phosphoric acid salt. CONSTITUTION: Anthraquin...  
JP58121237
PURPOSE: To prepare 2,6-di-t-butyl-1,4-benzoquinone, economically, by oxidizing the corresponding phenolic compound with molecular oxygen using DMSO, DMF, pyridine, etc as a solvent, in the presence of an alkali metal hydroxide or carbon...  
JP58110581
NEW MATERIAL:The compound of formulaI(one of R1 and R2 is H and the other is lower alkylenedioxy; X is halogen). EXAMPLE: 2-Chloro-6,6-ethylenedioxy-5,6,7.8-tetrahydro-1,4-naphthoqui none. USE: A synthetic intermediate of 4-demethoxydaun...  
JP58110536
NEW MATERIAL:A naphthacenequinone derivative of formulaI(one of R1 and R2 is H and the other is lower alkylenedioxy). EXAMPLE: 2,2-Ethylenedioxy-6-hydroxy-1,2,3,4-tetrahydro-5,12-naphthac enquinone. USE: Synthetic intermediate of 4-demet...  
JP58089193
PURPOSE: To recover coenzyme A from a solution containing crude coenzyme A in high yield in high purity, by using column chromatography with a silica gel having a specific pore volume. CONSTITUTION: A solution containing crude coenzyme A...  
JP58085835
PURPOSE: To obtain the titled compound of high purity by an easy means, by preparing a solution in a suitable concentration from crude naphthoquinone obtained by oxidizing naphthalene in an aromatic solvent, crystallizing the naphthoquin...  
JP58083698
NEW MATERIAL:A compound of formulaI(R1 is methyl, methoxy, two of R1 form -CH=CH-CH=CH-; X is -CH=CH-, formula II; m=0W3; n=1W20; n'=1W 5; k=0W3) or its corresponding hydroquinone. USE: Coronary circulation improver, hypotensor and SRS-A...  
JP58077839
PURPOSE: To obtain stable fine crystal of 6-(10-hydroxydecyl)-2,3-dimethoxy- 5-methyl-1,4-benzoquinone (QSA-10), by spray drying the solution of QSA-10, and heating the resultant fine crystal at a specific temperature. CONSTITUTION: Fine...  
JP58069830
PURPOSE: In oxidizing naphthalene catalytically in a gaseous phase, to obtain the titled compound advantageously, by providing a layer for blending a catalyst with an inert granule and packing them before the inlet part of the oxygen- co...  
JP58059937
PURPOSE: To obtain an optically pure titled compound, economically, from optically pure 4-demethoxy-7-deoxydaunomycinone dimethyl ether, easily, in high yield, by resolving the starting raw material with dialkyl ether. CONSTITUTION: A cr...  
JP58057331
PURPOSE: A catalyst for naphthalene oxidation that is made by adding rubidium sulfate to a titanium dioxide-vanadium pentoxide system and supporting them on an inert nonporous support, thus enabling improvement in selectivity and permitt...  
JP58057332
PURPOSE: A naphthalene oxidation catalyst is prepared by adding potassium sulfate to a titanium dioxide-vanadium pentoxide and supporting them on a nonporous inert carrier, thus increasing its selectivity, resulting in increase in the to...  
JP58055416
PURPOSE: A preventive and remedy for cholelithiasis that contains vitamin K as an active ingredient, thus being suitable for the use in medical treatment of cholelithiasis. CONSTITUTION: Vitamin K, which has been known as a vitamin activ...  
JP58052238
NEW MATERIAL:Optically active 4-demethoxyadriamycinone of formulaI. USE: Synthetic intermediate for non-natural type 4-demethoxyadriamycin-(carcinostatic agent). The carcinostatic agent exhibits the carcinostatic effect same as the natur...  
JP58051937
PURPOSE: To enable the reuse of silica gel, by regenerating silica gel used in purification of coenzyme Q by contacting the same with a solvent under heating after washing. CONSTITUTION: In regenerating silica gel in a column which is us...  
JP58051936
PURPOSE: To enable the reuse of silica gel, by a method wherein silica gel used in purifying coenzyme Q is dried after a solvent is exhausted therefrom and the dried silica gel is again contacted with the solvent. CONSTITUTION: In regene...  
JP58041839
PURPOSE: To obtain the titled compound by using a specific compound which is a crystalline material at normal temperature and stable to purification, drying and storage for a long period, as a starting raw material, converting the Br ato...  
JP58026839
PURPOSE: To prevent the incrase in the air permeation resistance in a catalytic bed, stabilize the operation and improve the yield in oxidizing naphthalene in the vapor phase in the presence of a catalyst containing vanadium oxide-alkali...  
JP58024538
NEW MATERIAL:The anthracyclinone compound of formulaI[when R1 is H and R4 is OH, then R2 is CH2COCH3 and R3 is COCH2CH3 or COCH=C(OH)CH2 CH3, or R2 and R3 together form the group of formula IIWIV; or when R1 is OH and R4 is H, then R2 an...  
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...  

Matches 851 - 900 out of 1,081