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Matches 551 - 600 out of 1,083

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JP04036260
NEW MATERIAL:Propene derivatives shown by formula I (R1 is H or methyl, when R1 is H, R2 and R3 are H or 2-methyl-2-propenyl, and when R1 is methyl, R2 and R3 are H or 2-propenyl; R4 is H or OH) and formula II. EXAMPLE: 3,5-Dimethyl-2-(2...  
JP04036253
NEW MATERIAL:An optically active compound expressed by formula I [R1 to R3 are H or 1-4C alkyl; R4 and R6 are OH or protected OH, and further R4 is oxo (in said case, benzene ring has benzoquinone structure); R5 and R8 are OH or acyloxy,...  
JP03287557
PURPOSE: To obtain 1,4-benzoquinone in high purity and yield using industrial easy operation by dropping an aqueous solution of an oxidizing agent into hydroquinone in the presence of a metallic vanadium salt, dilute sulfuric acid and an...  
JP03275642
PURPOSE: To efficiently obtain the title compound in high purity by adding a diene compound to a product formed by oxidation of a 2-substituted naphtha lene followed by heating and by separating and removing the resulting 6 substitu tion...  
JP03258745
PURPOSE: To efficiently and economically obtain high-quality chloranil while improving solubility of product in reacting hydroquinone with a chlorine gas in a reaction solvent, by using an acetic acid-water mixed solvent or an acetic aci...  
JP03246250
PURPOSE: To advantageously obtain chlorinated naphthoquinones by chlorinating the subject compounds with a hydrochloric acid solution at a specific concentration and hydrogen peroxide solution using a metal and metal chloride as a cataly...  
JP03246242
NEW MATERIAL:An optically active (S)- or (R)-pentane compound expressed by formula I (R1, R2 and R3 are H or 1-4C alkyl; R4 is hydroxy, protected hydroxy or oxo, provided that the benzene ring in the formula becomes the benzoquinone ring...  
JP03220155
PURPOSE: To obtain hypericin, by reacting emodin enthrone as a starting material with an oxygen-transfer reagent in an aromatic tertiary amine solvent in the presence of a redox catalyst and a secondary amine to form protohypericin and s...  
JP03215481
NEW MATERIAL:The compound of formula I (R1 to R3 are H or 1-4C alkyl; the steric configuration of the chiral center carbon atom labeled with * is S or R). EXAMPLE: (S)-(-)-6-hydroxy-2,5,7,8-tetramethylchroman-2-ethanol of formula II. USE...  
JP03209374
PURPOSE: To obtain a microbicidal and plant growth regulating chemical containing anthracenedione derivatives. CONSTITUTION: A microbicidal and plant growth regulating chemical containing compounds of formula I [A-D are each O, NR1, CR1R...  
JP03209343
NEW MATERIAL: A compd. of formula I (X is H, OH; one of R, R1 is H and the other is F; R2 is H, OH, alkoxy). EXAMPLE: 2β-acetyl2α,4α,5,12tetrahydroxy3β-fluoro1,2,3,4tetrahydr o6,11 nephthacenedione. USE: A intermediates for novel ant...  
JP03188042
NEW MATERIAL:A compound expressed by formula I {A is formula II, formula III [R3 to R5 are H, alkyl or alkoxy; X and Y are OH or formula IV (n is 0 or 1; R6 is alkyl)]; R1 is alkyl, cycloalkyl, alkenyl, alkynyl, arylalkyl, (CH2)1-10-CN, ...  
JP03176427
PURPOSE: To obtain the subject compounds in good yields, by reacting an aromatic or heteroaromatic amine with a nitrosyl polyfluoro salt and decomposing the product in situ. CONSTITUTION: A corresponding aromatic or heteroaromatic amine ...  
JP03176454
PURPOSE: To obtain a high purity shikonin in high yield by dissolving unpurified shikonin in an organic solvent under heating, absorbing impurities contained in the solution on an inorganic absorbent and separating the solution from the ...  
JP03163072
PURPOSE: To obtain the subject compound useful as a raw material of 2- hydroxy-1,4-naphthoquinone with suppressing side reaction and keeping reaction rate in high level by reacting 1,4-naphthoquinone and hydrogen peroxide in a reaction s...  
JP03151343
PURPOSE: To obtain the subject compound with high purity in high yield for a short reaction time, by reacting phthalic anhydride with a phenol derivative in the presence of a Lewis acid catalyst and an optional diluent in an automatic cl...  
JP03137164
NEW MATERIAL:The compound of formula I {R is H, 1-7C (alkoxy-substituted) alkyl, 1-7C (alkoxy-substituted) alkoxy, 1-7C alkylthio, 1-7C alkyl-substituted phenyl, benzyl, phenoxy, phenylthio, benzyloxy, halogen or -N(R1)R2 [R1 and R2 are ...  
JP03120236
NEW MATERIAL:A calixareone derivative which is a calixarene derivative expressed by formula I or II (n is 3-8). EXAMPLE: p-Hydroquinone type calix[4]areone or p-benzoquinone type calix[4]areone. USE: With including action, physiological ...  
JP03109388
NEW MATERIAL:A compound expressed by formula I (A is -O- or -NH-; R is alkyl or hydroxyalkyl). USE: An antitumor agent. PREPARATION: A compound expressed by formula II is reacted with 1-7 equivalent 2-hydroxyethylamine in an inert solven...  
JP03099075
NEW MATERIAL: Compds. of formulae I and II, (where X, Y=O, S; R1, R5 = isopropyl, cyclopropyl, etc.; R2, R4=H, isopropyl, phenyl, etc.; R3=H, methyl, ethyl, C3-8 cycloalkyl, etc.), salts contg. salts of the same. EXAMPLE: Sodium 3(R),5(S...  
JP03086841
NEW MATERIAL:A quinone derivative expressed by formula I (R1 and R2 are H, methyl or methoxy or mutually linked to form CH=CH-CH=CH; R3 is H or methyl; R4 is phenyl which may be substituted with lower alkyl or lower alkoxy; R5 is hydroxy...  
JP03081248
NEW MATERIAL:A quinone derivative expressed by formula I or hydroquinone derived from said derivative (R1 and R2 are same or different methyl or methoxy, or R1 and R2 are mutually bonded to form-CH=CH-CH=CH-; R3 is methyl; R4 is substitu...  
JP03081246
PURPOSE: To obtain the subject compounds for, synthesis of hydroquinone useful in photograph industry with a high selectivity without a problem of corrosion of metallic materials by reacting phenol with oxygen in the presence of a specif...  
JP03081249
PURPOSE: To obtain the subject compound useful as a synthetic intermediate of a functional polymer or medical drug, etc., in high yield with using a small amount of catalyst and in high reaction speed by efficiently oxidizing 2,6- dimeth...  
JP03081247
PURPOSE: To obtain the subject compounds for synthesis of hydroquinone useful in photograph industry with a high selectivity without a problem of corrosion of metallic materials by reacting phenol with oxygen in the presence of a specifi...  
JP03074326
PURPOSE: To obtain the subject chemiluminescence inhibitor useful for a remedy of ischemic cerebrovascular disease, complication of diabetes mellitus, etc., by blending specified anthraquinones or analogous compounds as the active compon...  
JP03072444
NEW MATERIAL:A quinone derivative shown by formula I [R1 and R2 are H, methyl, methoxy or R1 and R2 are mutually bonded to form CH=CH-CH= CH; R3 is H or methyl; R4 is phenyl; R5 is hydroxymethyl or carboxyl; Z is C≡C or CH=CH; (n) is 2...  
JP03063240
NEW MATERIAL: A compound of formula I (R1-R4 are each a lower alkyl; R5 and R6 are each H, a lower alkyl; R is H, a 1-18C alkyl, a 2-18C alkyl substituted by one or more OH, a 3-18C alkenyl, a 2-18C acyl, benzyl, benzoyl, carboxyl, alkal...  
JP03056438
NEW MATERIAL: A 2-halogeno-3-phenoxy-1,4-naphthoquinone derivative of formula I (wherein R1-R5 is each H, halogen, cyano, nitro, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio, alkylsulfonyl, alkylsulfinyl, halogenoalkylthio, ar...  
JP03027342
PURPOSE: To obtain shikonin having high purity and useful as a raw material for pharmacenticals, etc., in high yield by adding an alkaline aqueous solution to an extract of shikonin ester extracted with an organic solvent, hydrolyzing th...  
JP03007244
NEW MATERIAL:A WS1128 substance of the formula (R is propyl, butyl, 3- methyulbutyl or pentyl) and a medically acceptable salt thereof. USE: A drug having an antibacterial activity and an antitumor activity. PREPARATION: A strain belongi...  
JP02300146
PURPOSE: To obtain the title compound useful as an intermediate for synthesizing drugs such as vitamin E by the use of small amounts of reagents sold on the market at high reaction rate in high yield by oxidizing 2,3,6-trimethylphenol wi...  
JP02295944
PURPOSE: To obtain qunizarin useful as an intermediate for dye industry readily in high yield and in high purity by reacting p-chlorophenyl with phthalic anhydride in specific fuming sulfuric acid in the presence of boric anhydride or bo...  
JP02292234
NEW MATERIAL:Diterpene quinone of the formula. USE: Useful as an aldose reductase inhibitor. Active for the prevention or treatment of diabetic complications caused by the aldose reductase, such as angiophathy, retinopathy, diabetic cata...  
JP02290826
NEW MATERIAL:Prenylquinone and hydroquinone derivatives expressed by formula I (X is formula II or formula III; R is H, 2 to 8C aliphatic acyl, hydroxy, 1 to 4C alkoxy, 1 to 4C alkyl, 2 to 8C aliphatic acyloxy, aroyl or heterocyclic acyl...  
JP02289531
NEW MATERIAL:An UCN-1028D derivative of formula I [R is H, formula II [Y is C=O, C(=O)O, C(=O)NH, SO2; n is 0-4; Z is O, NH or single bond; R1 is aryl or heterocyclic ring; X1 is H, OR2 (R2 is H, alkyl, etc.), etc.], -Y-R6 (R6 is alkyl, ...  
JP02289532
NEW MATERIAL:TAN-1085 of the formula (R is rhodinosyl or H) or an aglycone thereof. USE: An arterialization inhibitor. An aromatase inhibitor. A strong small molecule. Useful for breast cancers, endometritis, corpus uteri cancers, ovariu...  
JP02279652
PURPOSE: To obtain a compd. useful as a synthetic intermediate of vitamin E in good yield by oxidizing a trimethylphenol by gaseous oxygen in the presence of a catalyst containing copper halide. CONSTITUTION: A trimethylphenol is reacted...  
JP02270839
PURPOSE: To advantageously produce the subject compound by oxidizing 2,3,6- trimethylphenol with oxygen or an oxygen-containing gas in the presence of copper chloride as a catalyst in a solvent containing a specific polyethylene glycol a...  
JP02268132
PURPOSE: To obtain the title substance in fast reaction rate and good yield by oxidizing 2,3,6-trimethylphenol with oxygen using copper chloride and Co compound as a catalyst in a solvent containing a polyethylene glycol alkyl ether. CON...  
JP02264739
PURPOSE: To obtain the objective substance in high yield by using a lower aliphatic alcohol, etc., having a high branching degree as a solvent in oxidizing 2,3,6-trimethylphenol with oxygen in the presence of a catalyst consisting of a c...  
JP02264737
PURPOSE: To provide a novel, optically transparent, isotropic molded part which is free of orientation birefringence and consists of a mixture of a polyphenylene ether, a vinylaromatic polymer and a trace of a novel diphenoquinone deriv....  
JP02256641
PURPOSE: To obtain an oxidation product easily in a high yield by a method in which benzyl alcohol is oxidized in a liquid medium by the use of a high activity catalyst of a metalloporphyrine and a specified oxidizing agent while control...  
JP02255637
PURPOSE: To obtain in high purity and in high yield the title compound useful as e.g. a sensitizer for photosensitive resins by dehydrating ring closure reaction of a 2-(4-alkylbenzoyl)benzoic acid with fuming sulfuric acid in a continuo...  
JP02235836
NEW MATERIAL: Cyclic ketone compds. of formulae I and II (wherein S is H, alkyl, or alkoxy; R* is a group of formula III; R1 is CH3 and R2 is 2C or higher alkyl or R1 is 1-4C alkyl and R2 is aryl, heteroaryl, CH2OR', CH2N<, CH2SR", or CH...  
JP02212421
PURPOSE: To obtain a remedy for dementia, containing at least one of vitamin B6, lecithin and vitamin B12 and coenzyme Q10 as active ingredients and useful for Alzheimer type dementia without any side effects. CONSTITUTION: A remedy for ...  
JP02209841
PURPOSE: To obtain the subject compound useful as an intermediate for synthesis of medicines such as vitamin E at an improved reaction rate in a high yield by oxidizing 2,3,6-trimethylphenol with, oxygen in the presence of a catalyst com...  
JP02207060
PURPOSE: To obtain the title compound with a high conversion efficiency by treating a dihydroxyphenyl compound with an alkali. CONSTITUTION: The alkaline treatment of a dihydroxyphenyl compound such as DOPA, dopamine, or norepinephrine g...  
JP02200655
NEW MATERIAL:UCT-1003 expressed by the formula having the following physicochemical properties. Molecular formula, C18H10O7; molecular weight, 338; melting point, gradually blackened and exhibiting no apparent melting point; solubility t...  
JP02188968
PURPOSE: To realize a semiconductor device having a quantum fine wire structure by making the device to have a semiconductor layer formed on insulating substrates, thermally oxidized film 6 formed on the semiconductor layer, and gate ele...  

Matches 551 - 600 out of 1,083