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| Number | Title | Issue Date |
| 7528271 | Intermediates, process for their preparation and synthesis of 1,4-benzoquiones 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 consistin... | 05/05/2009 |
| 7432305 | Tail variants of redox-active therapeutics for treatment of mitochondrial diseases and other conditions and modulation of energy biomarkers Methods of treating or suppressing mitochondrial diseases, such as Friedreich's ataxia (FRDA), Leber's Hereditary Optic Neuropathy (LHON), mitochondrial myopathy, encephalopathy, lactacidosis, stroke (MELAS), or Kearns-Sayre Syndrome (KSS) are disclosed, as well as ... | 10/07/2008 |
| 7355055 | Compounds for treatment of lipase-mediated diseases Novel benzoquinone-derived compounds and polymorphs, prodrugs, geometric or optical isomers thereof, and pharmaceutically acceptable esters, ethers, carbamates, oximes of such compounds, polymorphs, prodrugs and isomers are provided. Process for preparation of compo... | 04/08/2008 |
| 7253207 | Quinones as disease therapies Novel quinones are provided, as well as compositions comprising these novel quinones. Methods of using the novel quinones in treatment of various indications including cancer are also provided. ... | 08/07/2007 |
| 7145044 | Method of producing reduced coenzyme Qusing solvent with high oxidation-protective effect The present invention relates to a method of conveniently and efficiently producing reduced coenzyme Q10 having excellent qualities which is useful in foods, functional nutritive foods, specific health foods, nutritional supplements, nutrients, drinks, fe... | 12/05/2006 |
| 7122543 | Substituted benzoic acid derivatives having NF-κB inhibiting action A substituted benzoic acid derivative which is represented by the following formula (I) and has an NF-κB inhibiting action (in the formula, R3, R4 and R5 each independently represents a hydrogen atom, an alkyl group having 1 to 6 ca... | 10/17/2006 |
| 7105709 | Method of producing reduced coenzyme q10 The present invention relates to a method of conveniently and efficiently producing high-quality reduced coenzyme Q10 which is useful as an ingredient in foods, functional nutritive foods, specific health foods, nutritional supplements, nutrients, animal ... | 09/12/2006 |
| 7070625 | Agent and method for coloring keratin fibers containing 2-benzothiazolinone-hydrazone and quinone derivatives The objects of the present invention are an agent (A) for coloring fibers obtained by mixing two components (A1) and (A2), characterized in that component (A1) contains at least one 2-benzothiazolinone hydrazone derivative of formula (I) or a physiologically tolerat... | 07/04/2006 |
| 7064124 | NF-κB inhibitor containing substituted benzoic acid derivative as active ingredient A NF-κB inhibitor represented by the following formula (I) is provided: ... | 06/20/2006 |
| 7022441 | Silver-free black-and-white thermographic materials containing a benzoquinone and methods of imaging Silver-free, aqueous-based direct thermographic materials are designed to have image tone with near neutral density. Without the use of organic silver salts containing reducible silver ions, the image is formed using a color developing agent precursor that releases ... | 04/04/2006 |
| 7002047 | Biocatalytic synthesis of quinic acid and conversion to hydroquinone A bioengineered synthesis scheme for the production of quinic acid from a carbon source is provided. Methods of producing quinic acid from a carbon source based on the synthesis scheme as well as conversion of quinic acid to hydroquinone are also provided. ... | 02/21/2006 |
| 6943196 | NF-κB inhibitor comprising phenylmethyl benzoquinone as the active ingredient An NF-κB inhibitor having as an active ingredient a benzoquinone derivative represented by the general formula (1) wherein R1, R2, and R3 are each independently H, alkyl having 1 to 5 carbons, or alkoxy having 1 to 5 carbons; R... | 09/13/2005 |
| 6872857 | Process for conversion of phenol to hydroquinone and quinones 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 using an oxidant in the presence... | 03/29/2005 |
| 6815565 | Method for preparing hydroquinones and dihydroxybiphenyl compounds from mixtures of bromophenols and benzoquinones 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′-dihydroxybiphenyls are useful monomers for th... | 11/09/2004 |
| 6693221 | Method of preparing mixtures of bromophenols and benzoquinones A method is described for the simultaneous preparation of 4-bromophenols and p-benzoquinones, intermediates useful in the preparation of hydroquinones and 4,4'-dihydroxybiphenyls respectively. Hydroquinones and 4,4'-dihydroxybiphenyls are useful monomers ... | 02/17/2004 |
| 6600077 | Biocatalytic synthesis of quinic acid and conversion to hydroquinone A bioengineered synthesis scheme for the production of quinic acid from a carbon source is provided. Methods of producing quinic acid from a carbon source based on the synthesis scheme as well as conversion of quinic acid to hydroquinone are also provided... | 07/29/2003 |
| 6506915 | Synthesis of coenzyme Q10 ubiquinone Processes for the stereospecific synthesis of coenzyme Q10, ubiquinone, are disclosed; a total synthetic procedure using geraniol as the starting material. The process of the invention results in high yields of isometrically pure ubiquinone. The synthetic... | 01/14/2003 |
| 6346633 | Anti-tumuor agents The invention concerns anti-tumour agents of formula (I) wherein each of R1, R2 and R3 has the meanings defined in the specification including hydrogen, (1-4C)alkyl, (3-4)alkenyl, (3-4C)alkynyl, amino, (1-4C)alkylamino and... | 02/12/2002 |
| 6303801 | Process for producing alkyl-substituted hydroquinones A process for producing an alkyl-substituted hydroquinone, wherein said process comprises reacting a hydroquinone compound represented by the general formula (1) ##STR1## wherein R1 and R2 independently represent a hydrogen atom or a... | 10/16/2001 |
| 6280893 | Electrophotographic photoreceptor Electrophotographic photoreceptors for use in photocopiers and laser printers, among other things, possessing high electron mobility and superior photosensitivity properties. The photoreceptors of the invention utilize a photosensitive layer with a carrie... | 08/28/2001 |
| 5932753 | Process for producing 2-methyl-1,4-benzoquinone A process for producing 2-methyl-1,4-benzoquinone at a high conversion, a high selectivity and at a low cost by oxidizing m-cresol with oxygen at a low partial pressure in the presence of at least one copper (I) halide catalyst and a mixed solvent of keto... | 08/03/1999 |
| 5869522 | Antiviral naphthoquinone compounds, compositions and uses thereof The present invention provides novel antiviral naphthoquinone compounds, which may be isolated from plants of the genus Conospermum or synthesized chemically, in accordance with the present inventive methods. The antiviral naphthoquionone compounds, deriv... | 02/09/1999 |
| 5686635 | Tetrahydro-alkenyl-methanonaphthalene-5,8-dione derivatives Disclosed herein are a quinone derivative represented by the following formula: ##STR1## wherein R1 and R2 are identical with or different from each other and mean individually a lower alkyl or lower alkoxy group, or may fo... | 11/11/1997 |
| 5672725 | Process for preparing quinones The invention provides a novel process to oxidize 1,4-dihydroxy aromatic compounds into the corresponding quinones using sulfuryl chloride as the oxidant. The process is simple and cost effective and provides an efficient way to synthesize hindered quinon... | 09/30/1997 |
| 5616734 | Process for the catalytic oxidation of aromatic compounds The invention relates to the use of compounds of the formula I R1a Reb Oc (I), where a is from 1 to 6, b is from 1 to 4 and c is from 1 to 14 and the sum of a, b and c is in accordance with the... | 04/01/1997 |
| 5476955 | Process for the preparation of a quinone derivative Disclosed herein are a quinone derivative represented by the following formula: ##STR1## wherein E1 and E2 are identical with or different from each other and mean individually a lower alkyl or lower alkoxy group, or may fo... | 12/19/1995 |
| 5318993 | Antihyperlipidemic benzoquinones The present invention relates to novel benzoquinones which are useful as antihyperlipidemic agents. The present invention also provides a process for their preparation, pharmaceutical compositions, and a method for treating birds and mammals in need there... | 06/07/1994 |
| 5262552 | Optically active compounds and intermediates thereof, and process for manufacturing same An optically active (S)- or (R)-pentane compound of the general formula (11): ##STR1## wherein R11, R12 and R13 independently represent a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms, R14... | 11/16/1993 |
| 5220042 | 1,4-benzoquinone derivatives and benzene derivatives, and process for preparing the same 1,4-Benzoquinone derivatives and benzene derivatives having cerebral- and cardiac-blood flow improving activities and preventive activities of cerebral ischema with low toxicities, and thus are useful as activators for cardiac and cebral metabolisms, curi... | 06/15/1993 |
| 5180842 | Purification of quinones Disclosed is a process for removing chlorine-containing impurities from quinone compounds such as p-bezonquinone. The process involves extracting a quinone compound containing 1000 ppm or more chlorine with heptane, cyclohexane or a mixture thereof and se... | 01/19/1993 |
| 5180400 | Method for dyeing keratinous fibres using an aminoindole in combination with a quinone derivative Method for dyeing keratinous fibres, characterized in that at least one composition (A) containing at least one aminoindole in a medium appropriate for dyeing is applied to these fibres, the application of the composition (A) being preceded or followed by... | 01/19/1993 |
| 5149849 | Process for the preparation of quinhydrones Disclosed is a process for the preparation of quinhydrones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalyst system comprising a cerium carboxylate and a cupric carboxylate.... | 09/22/1992 |
| 5118823 | Oxidation of dihydroxyaromatic compounds to quinones Disclosed is a process for making quinones by oxidation of dihydroxyaromatic compounds in the presence of oxygen using supported platinum catalysts.... | 06/02/1992 |
| 5110995 | Preparation of phenol or phenol derivatives The invention relates to a process for the production of phenol or phenol derivatives by oxidation of the aromatic nucleus of benzene or benzene derivatives with nitrous oxide over a zeolite catalyst.... | 05/05/1992 |
| 5107003 | Preparation of quinones by the ceric-catalyzed oxidation of aromatic diols Disclosed is a process for the preparation of quinones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalytic amount of ceric trihydroxyhydroperoxide.... | 04/21/1992 |
| 5104874 | Benzoquinone antiallergy and antinflammatory agents A series of 2-amino-5,6-dimethyl-1,4-benzoquinone derivatives, inhibitors of cyclooxygenase and lipoxygenase and useful as antiallergic and antiinflammatory agents.... | 04/14/1992 |
| 5053053 | Process for dyeing keratinous fibres with a hydroxyindole in combination with a quinone derivative; and novel 1,4-benzoquinones Process for dyeing keratinous fibres, comprising the step of applying to these fibres at least one composition A containing, in a medium appropriate for dyeing, at least one mono- or di-hydroxyindole the application of the composition A being preceded or ... | 10/01/1991 |
| 4973720 | Process for the preparation of p-benzoquinone There is provided a process of producing p-benzoquinone, wherein hydroquinone and hydrogen peroxide are reacted in water, an aqueous inorganic acid solution, an inert organic polar solvent or a mixture of water with an inert organic polar solvent in the p... | 11/27/1990 |
| 4853186 | Water-compatible reducible compounds and their use in analytical compositions and methods Certain water-compatible reducible compounds are useful in analytical compositions and elements for assay of various analytes, e.g. microorganisms. These compounds comprise a moiety which provides a detectable species (e.g. a dye) when released from the c... | 08/01/1989 |
| 4772755 | 1,2-1,4 addition reaction sequence leading to disubstituted acelylenes A method for synthesizing a tri-substituted phenyl compound (I) by using a 1,2-addition followed by a 1,4-addition to 1,4-benzoquinone (II): ##STR1## wherein X is hydroxy, alkoxy or alkanoyloxy, Ar1 is an organic group and R is an unsubsti... | 09/20/1988 |
