Patents for C07C 50 - Quinones (2,441)
07/1991
07/24/1991EP0438376A1 Photochromic naphthacenchinones, process for their production and their use
07/19/1991CA2034316A1 Photochromic naphthacenequinones, process for their preparation and the use thereof
07/10/1991EP0436474A1 New fluoro-naphtacenediones, their glycosilated derivatives and methods of making them
07/09/1991US5030387 Anthraquinone derivatives
07/03/1991CN1052659A Fluoro-naphthacenediones, their glycosilated derivatives and their manufacture procedures
07/02/1991CA1285575C Naphthalene anti-psoriatic agents
07/02/1991CA1285562C Quinone derivatives, their production and use
06/1991
06/26/1991CN1012953B Synthesis of phenanthrene quinone
06/25/1991US5026732 Use of avarone for the control of AIDS and ARC
06/25/1991CA1285280C Quinone derivatives, their production and use
06/19/1991EP0432496A2 Preparation of hypericin
06/19/1991EP0408759A4 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups
06/13/1991WO1991008189A1 Polyhydroxy-1,4-naphthoquinones and a pharmaceutical preparation as protector of myocardium under ischemia and reperfusion based on them
06/05/1991EP0430434A2 Process for the preparation of fluoroaromatic and fluoroheteroaromatic compounds
06/05/1991EP0430164A2 Process for preparation of 2-substituted-1,4-naphthoquinone
06/04/1991US5021570 Aqueous solution containing fat-soluble vitamin K
05/1991
05/15/1991EP0426785A1 Compositions and methods for treating viral infections
05/14/1991US5015745 Ketalization, sulfonylation, amination and diazotization to form a demethoxydaunomycinone
05/14/1991CA2029715A1 Fluoro-naphthacenediones, their glycosilated derivatives and their manufacture procedures
05/01/1991CN1012495B Quinone derivatives, their production and use
04/1991
04/30/1991US5011944 Electrochromism; intermediates for substituted napthquinones and tetrathiotetracenes
04/25/1991DE3935772A1 Prepn. of St John's wort extract enriched with hypericin - by extracting plant material contg. at least 50 wt. per cent blossoms with mixt. of alcohol and water
04/24/1991EP0423583A1 Process for the preparation of hydroxyanthraquinones
04/23/1991CA1283410C Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof
04/21/1991CA2026904A1 Preparation of hydroxyanthraquinones
04/04/1991WO1991004021A1 Medicaments for the treatment of toxoplasmosis
04/03/1991EP0419905A2 Quinone derivatives and pharmacological use
04/02/1991CA1282420C Process for producing 2-methyl-1,4-naphthoquinone
03/1991
03/27/1991EP0418648A1 4-Hydroxytetrahydropyran-2-ones as well as the corresponding dehydroxy carbon acid derivatives, salts and esters, process for their preparation, pharmaceutical preparations as well as precursors
03/27/1991CN1050182A Quinone derivatives and pharmacological use
03/26/1991US5002634 Method for the delignification of wood pulp utilizing fused ring quinone compounds prepared from lignin or lignin derived substances
03/19/1991US5001282 Method of treating diabetes mellitus with bisphenol derivatives
03/19/1991CA1281650C Aqueous preparation containing cyclodextrin
02/1991
02/20/1991EP0413224A1 Fungicidal agent containing 1,2-naphthoquinones
02/12/1991US4992469 Method of obtaining an antiplatelet effect
01/1991
01/30/1991EP0410343A2 Use of bisphenol derivatives in treating diabetes mellitus
01/30/1991EP0410172A2 2-Halogeno-3-phenoxy-1,4-naphthoquinone derivatives
01/23/1991EP0408759A1 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups
01/15/1991US4985447 Certain benzoquinones, naphthoquinones and derivatives thereof which exhibit thromboxane A2 synthetase inhibition or receptor antagonism and the like
01/01/1991US4981982 Neutralization
01/01/1991US4981874 Preventing pneumoxystis pneumonia in aids patients
12/1990
12/27/1990EP0404640A1 5,6,7,8-Tetrahydro-1-naphtalenol derivatives, process for their preparation and their use as antioxidants in cosmetic and pharmaceutical compositions
12/25/1990US4980489 2-(1-alkylaminoalkyl)-3-hydroxy-1,4-naphthoquinone
12/19/1990EP0211023B1 Pharmaceutical composition containing ubidecarenone
12/13/1990CA2018959A1 Tetrahydro-5,6,7,8 naphtalenol-1 derivatives, process for their preparation and use as antioxidant in cosmetic compositions and pharmaceutical products containing same
12/04/1990US4975459 Microbicidal and plant growth regulating compounds
12/04/1990CA1277332C Phenyl nonatetraenoic acid derivatives
11/1990
11/27/1990US4973772 Reacting chloroaromatic compound with alkali metal fluoride in presence of phase transfer agents
11/27/1990US4973720 Hydroquinone, hydrogen peroxide, iodine or iodide catalyst
11/14/1990EP0397137A1 Production process of quinizarin
11/13/1990US4970328 Miticide, fungicide
10/1990
10/30/1990US4966984 Heating in presence of superactive bleaching clay
10/30/1990US4966918 Derivatives of chryosphanol
10/23/1990US4965274 Quinolyl methoxy compounds, processes for preparation thereof and pharmaceutical composition comprising the same
10/03/1990EP0390181A2 Perylenequinone (UCN-1028D) derivatives
10/02/1990US4960914 Method for the preparation of naphthoquinone
09/1990
09/20/1990WO1990010438A1 Compositions and methods for treating viral infections
09/19/1990EP0387820A2 Process for the preparation of 2,3,5-trimethyl-p-benzoquinone
09/12/1990CN1045259A Process for preparing anthracyclinones
09/12/1990CN1009550B Liquid phase oxidation method for preparing anthraquinone from crude anthracene
09/12/1990CN1009549B Process for the manufacture of optically active compounds
09/05/1990EP0385354A1 Process for preparing anthracyclinones
09/05/1990EP0385109A2 Shaped article for optical uses
09/03/1990WO1990009974A1 Process for preparing anthracyclinones
08/1990
08/28/1990US4952712 Process for the preparation of 2,3-dimethoxy-5-methylbenzoquinone
08/22/1990EP0383372A1 Cyclic triketone compounds and trimethylsilyloxy butadiene compounds and their use in the preparation of daunomycinone derivatives
08/22/1990CN1044808A Method for bromination of aromatic and heterocyclic compounds containing acceptor groups
08/22/1990CN1044807A Composition for denatured denaturation or protection agent for nerve cell and process for preparing benzene derivatives used for composition
08/16/1990EP0382213A2 Biphenyl derivative, nerve cell degeneration repairing or protecting agent and process for preparing a phenyl derivative contained in the agent
08/10/1990CA2009096A1 Cyclic triketone compounds and trimethylsilyloxy butadiene ckompounds and their use in the preparation of daunomycinone derivatives
08/09/1990WO1990008759A1 Derivatives of chrysophanol
08/07/1990US4946845 Naphthalene anti-psoriatic agents
08/01/1990EP0380373A1 Polycyclic compounds and their production
07/1990
07/24/1990US4943645 Benzoquinone derivatives and production thereof
07/17/1990CA1271772A1 Oxidation of organic compounds using ceric ions in aqueous methanesulfonic acid
07/12/1990WO1990007479A1 Method of obtaining bromated aromatic and heterocyclic combinations containing acceptor groups
07/10/1990CA1271485A1 Oxidation of organic compounds using a catalyzed cerium(iv) composition
07/10/1990CA1271484A1 Oxidation of organic compounds using ceric methanesulfonate in an aqueous organic solution
07/03/1990US4939282 The process for preparing 6-deoxynthracyclines
07/03/1990US4939178 Use of avarol for the control of adult T-cell leukemia/lymphoma
07/03/1990US4939177 Use of avarol for the control of AIDS and ARC
07/03/1990US4939169 1,4-naphthalenediol and 1,4-hydroquinone derivatives
06/1990
06/27/1990EP0374890A1 Process for the production of anthraquinone derivatives
06/26/1990CA1270844A1 Quinone derivative and pharmaceutical composition containing the same
06/12/1990US4933489 Process for the manufacture of 6-chloro-1,4-diacetoxy-2,3-dimethoxynaphthalene
05/1990
05/30/1990CN1008185B Synthesis of tera-oxy-dihydro-anthraquinone
05/29/1990US4929642 Pest-combating agents based on substituted 1,4-naphthoquinones and new substituted 1,4-naphthoquinones
05/22/1990US4927865 Anthraquinoylcarboxylic acid hydrazides, curable compositions and use thereof
05/22/1990CA1269394A1 Ceric oxidant
05/22/1990CA1269372A1 Process for preparing anthraquinones
05/09/1990EP0366973A1 New 4-substituted anthracyclinones and anthracycline glycosides and the process for preparing them
05/08/1990US4924015 Preparing metallic coatings and images
05/08/1990US4923881 Quinolyl methoxy compounds, processes for preparation thereof and pharmaceutical composition comprising the same
05/03/1990WO1990004601A1 New 4-substituted anthracyclinones and anthracycline glycosides and the process for preparing them
05/02/1990EP0365973A1 Process for preparing 4-0-alkyl-rhodomycins
05/02/1990CN1041753A New benzoquinone compound, preparation thereof and radioactive sensitizer containing it
04/1990
04/25/1990CA1268188C Intermediate for the synthesis of optically active d- o tocopherol
04/22/1990CA2001087A1 Process for the preparation of 4-o-alkylrhodomycins
04/11/1990EP0362996A2 Naphthoquinones for the treatment and prophylaxis of pneumocystis carinii infections
04/03/1990US4914217 Asymmetric synthesis of natural vitamin E
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