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WO/2008/140328A2 |
The present invention discloses a new process for the preparation of 1,4-benzoquiones of formula (II) wherein R1, R2, R3 and R4 are independently selected from the group consisting of H, branched or unbranched C1-C6 alkyl, phenyl and ben...
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WO/2008/122988A1 |
Substantially pure atovaquone and parocess for the preparation thereof is disclosed.
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WO/2008/111515A1 |
Disclosed is a simple and highly efficient process for producing an aromatic carbonyl compound, which can produce an aromatic carbonyl compound having a substituent introduced to an aromatic ring adjacent to a carbonyl group. The process...
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WO/2007/147775A1 |
The present invention refers to a process for preparing a compound of the formula (I) wherein R denotes an organic radical which, together with the two carbon atoms to which it is bonded, forms a carbocyclic or heterocyclic ring; R1, R2,...
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WO/2007/129269A2 |
The present invention relates to an improved process for the preparation of Coenzyme Q. Coenzyme QlO or CoQlO has the chemical name 2- [(all -trans)- 3, 7,l l,15,19,23,27,31,35,39-decamethyl-2, 6, 10, 14, 18, 22, 26, 30, 34, 38 - tetraco...
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WO/2007/129268A2 |
The present invention relates to an improved process for the preparation of Coenzyme Q. Coenzyme Q10 or CoQ10 has the chemical name 2- [(all -trans)- 3, 7,l l,15,19,23,27,31,35,39-decamethyl-2, 6, 10, 14, 18, 22, 26, 30, 34, 38 - tetraco...
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WO/2007/073651A1 |
Disclosed are 4,5-seco abieta diterpene quinones (i.e. saproorthoquinone derivatives) of formula A, B or C, physiological acceptable salts, preparation process and pharmaceutical compositions thereof , wherein in formula A, R1 is CH3, CH...
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WO/2007/032378A1 |
A process for producing the compound represented by the following formula (1), which is menatetrenone. It is characterized in that a reaction solution consisting only of a solution obtained by dissolving the compound represented by the f...
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WO/2007/022979A2 |
The invention relates to mediator systems containing dihydroxylated and/or polyhydroxylated quinoid compounds from the group of anthraquinones, naphthoquinones or anthracene-9,10-diolates of ammonium metals, alkali metals, alkaline-earth...
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WO/2007/017168A1 |
A process for the preparation of ubihydroquinones and ubiquinones by condensation of a prenol or isoprenol with a hydroquinone or derivative thereof in the presence of 0.005 - 1.0 mol% of a catalyst which is a Broensted-acid, a Lewis-aci...
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WO/2006/132348A1 |
It is intended to provide a method of purifying ubiquinone-10 characterized by separating and removing a structural analog of ubiquinone-10 contained in a raw material liquid containing ubiquinone-10 by using an acrylic porous cross-link...
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WO/2006/118167A1 |
[PROBLEMS] To provide a method, which can analyze environmental microorganisms in a simple and rapid manner, and an apparatus therefor. [MEANS FOR SOLVING PROBLEMS] An extractor for a quinone compound comprises an extraction vessel (9) i...
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WO/2006/104411A1 |
The invention relates to a method for producing 2-methyl-1,4-naphthoquinone by oxidising a 2-methyl-1-naphthol with the aid of oxygen or oxygen-containing gas in an organic solvent medium or in a 2-methyl-1-naphthol melt and intensively ...
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WO/2006/069658A1 |
The invention relates to a method for producing a pure or enriched Q10 coenzyme of formula (I) by separating a mixture containing the Q10 coenzyme and a compound of formula (II).
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WO/2006/045548A2 |
The invention relates to a process for the preparation of p-methylenequinones of formula (I) wherein R1 and R2 are as defined in the description comprising the oxidative coupling of a compound of formula (V) followed by decarboxylation.
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WO/2006/024016A2 |
The present invention provides a new method of producing high quality idarubicin aglycone from 4-protected demethoxydaunomycinones such as 4-demethoxydaunomycinone-4-triflate.
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WO/2006/008752A1 |
Novel crystalline forms of anti Pneumocystis carinii compound (2-[4-(4-Chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthoqui
none) commonly known as Atovaquone and methods for producing the same is disclosed herein. This also provides phar...
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WO/2006/005530A1 |
The invention relates to a method for producing solanesylalkine by coupling suitable solanesyl derivatives to propargyl Grignard reagents. The invention also relates to the use of solanesylalkine produced in this way in order to produce ...
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WO/2005/123644A2 |
The invention relates to a method for producing 2-methyl-1,4-naphthoquinone by the oxidation of 2-methylnaphthalene. 2-methyl-1,4-naphthoquinone, also known as menandione or vitamin K3, is used in the field of animal nutrition as a food ...
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WO/2005/118520A1 |
The invention relates to a method for preparing a compound of formula (I) from a corresponding 4- hydroxy derivative by triflation and consequent reduction without isolating an intermediate triflated.
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WO/2005/097092A1 |
A new indication of use for bis(menadione bisulfite)piperazine (MBP) and a method for synthesizing the compound is described. MBP has a substantial vitamin K-like activity, which however, differently from other compounds currently in use...
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WO/2005/063669A1 |
A process for the preparation of benzoquinones and hydroquinones includes oxidizing an aromatic hydroxy compound with oxygen or an oxygen containing gas, a copper containing catalyst, and optionally a promoter to form the benzoquinone. A...
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WO/2005/063664A1 |
The present invention relates to a process for the conversion of phenol to hydroquinone and quinones. More particularly this invention relates to a process for the oxidation of phenol to a mixture of 1,4-benzoquinone and hydroquinone usi...
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WO/2005/056812A2 |
The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinones analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention, The invention...
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WO/2005/042445A2 |
Fluorinated pentacene derivatives, e.g., tetradecafluoropentacene, 5,6,7,12,13,14-hexafluoropentacene, 5,7,12,14-tetrafluoropentacene, and 6,13-difluoropentacene, which are novel compounds, and intermediates therefor. Also provided are p...
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WO/2005/005040A1 |
The invention relates to a heat exchanger for a reactor container (1) comprising a supply line (4) and a discharge line (5) for a heat exchange medium, and several heat exchange elements (2) which are connected to the supply line (4) and...
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WO/2004/094359A1 |
A method is described for the simultaneous preparation of p-bromophenols and p-benzoquinones, intermediates useful in the preparation of hydroquinones and 4,4’-dihydroxybiphenyls, respectively. Hydroquinones and 4,4’-dihydroxybipheny...
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WO/2004/018401A1 |
A method for producing biphenols by oxidative coupling of dialkylphenols which proceeds in two stages is disclosed, using a copper-amine complex which is catalytically active in each stage. A novel copper-amine complex is also disclosed ...
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WO/2004/014832A2 |
The present invention relates to a redox process particularly but not exclusively for producing menadione, which uses Keggin-type heteropolycompounds as oxidizing agents. These compounds are polyoxometalates containing phosphorus, molybd...
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WO/2004/013073A1 |
Anthracene derivatives represented by the general formula (1) which little cause crystallization and are freed from thermal decomposition in vapor deposition and which exhibit high luminous efficiency and attain uniform light outputs eve...
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WO/2003/066561A1 |
The invention concerns a compound of formula (I), wherein: R1 and R2, identical or different, represent each a hydrogen atom or an acyl or alkyl group; Ar represents an aryl or heteroaryl group; A represents a group selected from formula...
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WO/2003/016407A1 |
The invention relates to new thioxanthone compounds having utility as fluorescent dyes and processes for their manufacture.
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WO/2002/090304A1 |
By maintaining reduced coenzyme Q, which has not been employed in practice so far because of being liable to undergo oxidation and hydrophobic, stable against oxidation, a composition of a practically usable solution of reduced coenzyme ...
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WO/2002/085829A1 |
A process for production of dimers of aromatic monohydroxyl compounds, characterized by conducting the oxidative coupling of an aromatic compound represented by the general formula [I]: Ar-OH [I] (wherein Ar is an optionally substituted ...
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WO/2002/079133A1 |
The present invention describes a process for the preparation of 2-Methyl-1,4-naphthoquinone by oxidising 2-methylnaphthalene with hydrogen peroxide in the presence of acetic acid.
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WO/2002/076916A1 |
A method of scavenging oxygen in an atmosphere or liquid comprising the steps of: (i) treating an anthraquinone compound according to the formula: (I) wherein X1-X4 and R1-R4 are as defined in the claims, with predetermined conditions so...
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WO/2002/066690A2 |
A method for purifying a Redox mediator, e.g. solutions of Ce III/Ce IV or Cr III/Cr VI, used in a chemical process of oxidation of organic compounds. The desired purification is obtained by recovering the mediator in the form of a solut...
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WO/2002/053552A1 |
Provided are esculetin compounds, intermediates thereof, a process for preparation of the esculetin compounds, and antimould and herbicide compositions for agricultural and horticultural use, containing the compounds or the intermediates...
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WO/2002/053545A1 |
The present invention provides a process for producing aromatic bromide or aromatic iodide from an aromatic amine derivative using nitrite ion and holodimethylsulfonium halide generated $i(in situ) from hydrobromic acid/DMSO or hydriodic...
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WO/2002/050007A2 |
The present invention relates to stilbene and quinone compounds related to combretastatin A-4 and their use as anticancer compounds and prodrugs. The compounds include those with an alkyl group on the double bond of cis or trans-stilbene...
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WO/2002/014530A1 |
The present invention provides a convergent method for the synthesis of ubiquinones and ubiquinone analogues. Also provided are precursors of ubiquinones and their analogues that are useful in the methods of the invention.
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WO/2002/012158A2 |
The invention relates to a method for catalytically producing organic substances by partial oxidation which is carried out in the gaseous phase in the presence of molecular oxygen at temperatures in the range of from 200 to 500 °C in at...
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WO/2002/006261A1 |
The invention relates to the use of at least one component of formula (I) wherein R?1¿, R?2¿, R?3¿ and R?4¿ independently represent H or C¿1?-C¿6? alkyl. The invention also relates to the use of a compound of formula (I) for medica...
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WO/2001/087814A2 |
The present invention discloses a process for the semi-synthesis of 4-demethoxydaunomycinone, (8s-cis)-acetyl-10-hydroxy-7,8,9,10-tetrahydro-6,8,11-trihyd
roxy-5,12-naphthacenedione, of formula (I).
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WO/2001/077052A1 |
Improved oxidation methods are provided wherein a reaction mixture comprising a substrate to be oxidized (e.g., phenols, alkenes) and an oxidation catalyst (typically dispersed in an organic solvent system) is supplemented with a compres...
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WO/2001/068743A2 |
Disclosed are porous polymer/carrier solid phase reactants which consist of a polymer that consists of fine particles and is situated in the pore space of porous carrier materials. Reactive groups are bound to the polymer. Said groups ac...
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WO/2001/068579A1 |
The invention relates to a method for producing 1,1' binaphthalenylidene-4,4'-diones of general formula (I), wherein R?1¿ represents C¿1-6? alkyl, C¿1-6? alkoxy, phenyl, substituted phenyl, benzyl or benzyloxy; R?2¿, R?3¿, R?4¿, an...
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WO/2001/066461A1 |
The invention relates to a method of regenerating hydrogenated and/or oxygenated alkyl anthraquinones and/or alkyl anthrahydroquinones to alkyl anthraquinones and/or alkyl anthrahydroquinones, wherein the reaction is carried out in the p...
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WO/2001/054730A1 |
The invention relates to a method for producing a coenzyme Q10 / $g(g)-cyclodextrin complex. Said method is characterized in that a mixture of $g(g)-cyclodextrin and coenzyme Q10 is treated by homogenisation and inputting energy.
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WO/2001/045681A2 |
Substituted naphthalenediones in accord with structural diagram (I): compositions thereof and methods for the use thereof, for the treatment of T cell mediated conditions such as autoimmune diseases and organ graft rejection. In compound...
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