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JPH11189560A |
To provide a method for preparing a lycopene oxidation metabolite by using an easily available raw material, by total syntheses and by using α-terpinyl acetate as a starting raw material and carrying out a multistep reaction. α-Terpiny...
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JPH11189557A |
To reduce load of wastewater treatment and obtain alkadienols by reacting a conjugated alkadiene with water in the presence of a specific solution and carbon dioxide and then removing an organic acid as a by-product under specific condit...
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JP2918029B2 |
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JPH11180917A |
To obtain the subject compound from a low cost raw material in an extremely simple operation by performing a photo-reaction of a di(halogenated methyl)aryl with methanol in the presence of a rare earth element salt. This method for produ...
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JPH11180973A |
To provide dibenzylidene sorbitols not generating coloring or odor. Dibenzylidene sorbitols are thermally stabilized by adding 0.01-2 pts.wt. of heterocyclic amines to 100 pts.wt. of dibenzylidene sorbitols obtained by subjecting benzald...
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JPH11180916A |
To provide a method for producing α-phenylethyl alcohol by which acetophenone is hydrogenated in the presence of a copper-based catalyst according to a fixed bed flow reaction and the degree of freedom of design for the shape of a react...
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JPH11171859A |
To obtain the subject new compound estimated to have a differentiation-inducing action and a proliferation-inhibiting action and capable of being expected to be used as an antitumor agent, and antirheumatic agent, a psoriasis-treating ag...
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JP2911239B2 |
This invention relates to certain novel di- and tetra-fluoro analogs of squalene and to their methods of use in lowering plasma cholesterol and in inhibiting squalene epoxidase in patients in need thereof.
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JP2907640B2 |
A topical pharmaceutical or cosmetic composition for treating or preventing acne vulgaris comprises at least one saturated or unsaturated chain alcohol having 18 carbon atoms represented by formula (I): wherein a dotted line represents e...
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JPH11158097A |
To obtain the subject compound useful as an intermediate for medicines and agrochemicals, by reacting a specific organic halide with magnesium and paraformaldehyde and hydrolyzing the reaction product. Magnesium and paraformaldehyde are ...
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JP2905024B2 |
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JP2901776B2 |
Preparation of a compound of formula in which the dotted lines show the location of a single or double bond, the symbol R<1> denotes a hydrogen atom or a methyl radical, the symbol R<2> denotes a saturated or unsaturated C1-C4 alkyl radi...
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JP2901054B2 |
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JP2893798B2 |
Optically active biphenyl derivatives including optically active biphenyl carboxylic acid derivative, hydroxybiphenyl derivative, alkoxybiphenylalkanol derivative and alkoxybiphenylalkanol derivative have the following structural formula...
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JP2895258B2 |
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JPH11130713A |
To obtain the subject new compound useful as an agent for preventing and treating diabetic complications and as an aldose reductase inhibitor. A compound of formula I [R1 and R2 are each hydroxy, a (aryl-substituted) lower alkoxy or a ha...
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JP2890759B2 |
Disclosed herein are a novel optically active naphthalene derivative, a process of the preparation thereof a ferroelectric liquid crystal composition containing the same and a liquid crystal element using the composition. The above optic...
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JP2891533B2 |
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JPH11124350A |
To obtain the subject alcohol in high reaction yield and high optical yield by carrying out reaction while removing a carbonyl compound produced from an alcohol when specific ketones are subjected to hydrogen transfer type asymmetric red...
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JP2888509B2 |
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JP2888250B2 |
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JPH11116629A |
To obtain the subject derivative having an asymmetric catalytic function by polymerizing an optically active phenylacetylene derivative in the presence of an organometallic catalyst in an organic solvent. This derivative, mainly composed...
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JPH11116517A |
To efficiently obtain a diol in a short time by a ready operation under mild conditions without using a harmful organic solvent from the viewpoint of environmental protection, by blending a mixed solution of a carbonyl compound and an al...
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JPH11116516A |
To obtain the subject alcohol useful as a raw material for producing perfumes, medicines, agrochemicals, etc., industrially and advantageously, by bringing a specific compound into contact with γ-alumina in a vapor phase in a prescribed...
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JPH11116551A |
To obtain the subject new derivative bearing methyl group on the 2 site, and useful as a therapeutic agent for osteoporosis. This new derivative is a 1,25-dihydroxy-2-methyl vitamin D3 derivative of formula I [R1 and R2 are each H or a t...
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JP2885606B2 |
There is disclosed a process for producing 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) comprising the steps of subjecting phenol and acetone to condensation reaction in the presence of an acid catalyst to form a reaction mixture, cryst...
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JP2883705B2 |
The invention relates to a process for the preparation of alpha - and beta -iron, that is to say the compounds of the formula I, and to novel intermediates in this synthesis. ……
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JP2884084B1 |
[wrap up] [Task] Provided are novel 1,8- (hydroxyethyl) naphthalene compounds and 1,8- (acyloxyethyl) naphthalene compounds useful as monomers for peri-crosslinked polyesters and polyethers, raw materials thereof, surfactants and the lik...
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JPH1184580A |
To obtain a heat developable diazo copying material free from repellent, unevenness in an image and the surface roughening of the image, excellent in image uniformity, not causing surface fog due to precoupling and excellent in preservab...
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JPH1180142A |
To readily introduce a carbon isotope to a methine carbon of a diphenylbutyl structure and to obtain a diphenylbutylpiperazine by using a new production method through five processes from a diphenyl ketone derivative. A diphenylalkyl com...
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JP2872800B2 |
A biphenyl compound having the formula (I) is newly separated into its optical active compound, and useful as an optically separating agent: (* CHEMICAL STRUCTURE *) (I) wherein W, X and Y are each an atom or atomic group selected from a...
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JP2873038B2 |
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JPH1180059A |
To obtain a catechol monoether or catechol, both of which are useful as intermediates for synthesizing medicines, flavors, and seasonings, simply and economically, by reacting a specific oxygen-containing cyclohexane compound in the pres...
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JPH1171362A |
To obtain a new compound useful as a radioactive labeled compound by replacing a methine carbon atom bound to two phenyl groups by a radioactive carbon atom. A compound of formula I [R1, R2 are each H or a halogen atom; R3 is a (saturate...
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JP2868161B2 |
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JP2866936B2 |
To efficiently obtain the subject compound in an industrially advantageous way by direct carbonylation of an aromatic hydrocarbon with carbon monoxide using liquefied or supercritical carbon dioxide as solvent in the presence of a specif...
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JP2866678B2 |
7-Substituted 3,5-dihydroxyhept-6-ynoic acids and the derivatives thereof of the formula I I as well as the corresponding lactones of the formula II II in which R and R DEG have the specified meanings, a process for the preparation of th...
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JP2865708B2 |
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JP2866622B2 |
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JP2862354B2 |
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JPH1160527A |
To obtain the subject compound useful as an intermediate for synthesizing medicines and agrochemical by subjecting a flouorophenyl alkyl ketone to hydrogen-transfer-type asymmetric reduction in the presence of specific compounds includin...
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JP2857918B2 |
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JPH11501922A |
Novel trifluoromethylated intermediates are provided which are useful in synthesizing trifluoromethylated organic compounds. Specifically, compounds of the formula CF3CCl=CHCH2X are provided, which compounds are versatile intermediates f...
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JPH1143455A |
To economically and efficiently obtain the subject compound in an industrially advantageous way by reducing a specific halogenated ester with a boron hydride compound. This compound expressed by the formula, Ar-R-CH2OH is obtained by sub...
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JPH1143454A |
To obtain a new compound useful as pharmaceutical intermediates, such as an intermediate for retinol (vitamin A). This compound is expressed by formula I ([R is a protective group for H and OH; Y is expressed by formula II or III (R1 to ...
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JP2854547B2 |
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JPH11501291A |
(57) [Summary] The bactericidal alcohols represented by the general formulas I and II shown below are described.In the above formula: R2Is non-interrupted or interrupted by oxygen and / or sulfur atoms.1-C8Alkyl group, C2-C8Alkenyl group...
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JP2850068B2 |
A process for producing an optically active 1-substituted-1,3-propanediol is disclosed, comprising hydrogenating a 3-substituted-3-oxopropanol or 3-substituted-3-oxopropanal in the presence of a ruthenium-phosphine complex represented by...
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JP2851830B2 |
A process for producing an unsaturated alcohol wherein the catalytic activity and the capability of maintaining double bond are sustained for a long time and side-reactions are suppressed. An unsaturated alcohol is obtained by hydrogenat...
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JP2851472B2 |
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