CAS: 2144-08-3; 2,3,4-Trihydroxybenzaldehyde

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CAS号189831-71-8 Benzaldehyde, 2... | CAS号24006-29-9 3,4-dihydroxy-2... | CAS号58749-23-8 甘草查尔酮B | CAS号2103-57-3 2,3,4-三甲氧基苯甲醛 | CAS号19283-70-6 2-羟基-3,4-二甲氧基苯甲醛 | CAS号91849-60-4 3,4-diethoxy-2-... | CAS号920007-18-7 3-(3,5-dimethox... | CAS号5084-31-1 1,3,5,6-四羟基呫吨酮 | CAS号4090-62-4 1-Hydroxy-3,5,6... | CAS号64-18-6 甲酸

碳酸二苯酯置于aluminum (III) Chloride,水,三乙胺体系中,用 甲基叔丁基醚 用作溶剂,化学反应生成2,3,4-三羟基苯甲醛
参考文献:一种2,3,4-三羟基苯甲醛的合成方法
标题:一种2,3,4-三羟基苯甲醛的合成方法
摘要:本发明提供一种2,3,4‑三羟基苯甲醛的合成方法,所述2,3,4‑三羟基苯甲醛的合成是以邻苯三酚为起始原料,经过保护酚羟基,甲酰化,脱保护三个步骤.本发明原料廉价易得,操作简单,产品收率和纯度高,三废量少,所述方法具有优异的经济和环保效益.

专利信息

专利号:US-2009099061-A1
优先权日:2006-01-27
标 题:Synthesis of carotenoid analogs or derivatives with improved antioxidant characteristics
发明人：FOSS BENTE J; NADOLSKI GEOFFRY T; LOCKWOOD SAMUEL F
权利人:FOSS BENTE J; NADOLSKI GEOFFRY T; LOCKWOOD SAMUEL F
摘要:A method is described for synthesizing and administering carotenoid compounds with improved antioxidant characteristics. In some embodiments, extension or improvement of conjugation may be employed in structural modification of carotenoids. In other embodiments, reduction of ring/chain steric hindrance may improve the lambda max, and hence, the overall antioxidant capability, of particular compounds. In other embodiments, introduction and/or increase in synthetic handles for conjugation may improve the stoichiometric ratios of conjugating moieties to the polyene backbone. The methods may be used to improve natural and/or synthetic compounds for medicinal application in the treatment of disease.

专利号:US-5569786-A
优先权日:1987-01-06
标 题 :Isolation, structural elucidation and synthesis of novel antineoplastic substances denominated 'combretastatins'
发明人：PETTIT GEORGE R; SINGH SHEO B
权利人:UNIV ARIZONA
摘要:New antineoplastic substances have been isolated, structurally elucidated and synthesized having a general structural formula of: (I) or H or OCH3; or R1R2 is -OCH2O-; R3 is H or OH; and R4 is OH or OCH3. These substances have been denominated 'combretastatin A-1, -A-2, -A-3, -B-1, -B-2, -B-3 and -B-4'. preparation containing the substances and methods of treating a host inflicted with a neoplastic growth with the preparation is described.

专利号:US-7056348-B2
优先权日:2001-04-19
标题:5-aryl-1,3,3-trimethyl-2-methylene-indoline derivatives and salts thereof, methods for the production and use of said compounds for the temporary coloration of fibers
发明人：SAUTER GUIDO; BRAUN HANS-JUERGEN; REICHLIN NADIA
权利人:WELLA AG
摘要:A method for the synthesis of 5-aryl-1,3,3,-trimethyl-2-methylene-indoline derivatives of Formula (I) or its salts of Formula (Ia) wherein 1 mole of a 5-aryl-2,3,3-trimethyl-3H-indole derivative of Formula (VII) is reacted for 1 to 44 hours at a temperature of 20° to 180° C. in an apolar, aprotic or polar, protic or polar aprotic solvent with 1 to 50 moles of a compound of Formula R1-A; new compounds of Formulas (I)/(Ia) and (V), obtainable by this method as well as an agent containing at least one compound of Formula (I)/(Ia) and a carbonyl/imine compound for dyeing keratinic fibers and a method for temporarily dyeing keratin fibers, for which the keratin fiber is dyed with the aforementioned agent and the dyeing, so obtained, is removed again at any later time by a sulfite preparation.

专利号:US-8673983-B2
优先权日:2007-12-21
标题:Melanins synthesized chemically or via enzyme catalysis
发明人：HOLMES EARLE W; THOMPSON KENNETH D
权利人:HOLMES EARLE W; THOMPSON KENNETH D; UNIV LOYOLA CHICAGO
摘要:The present invention provides an enzymatic and a chemical synthesis of melanins and novel melanins.

专利号:US-10532991-B2
优先权日:2018-04-18
标题 :Method for preparing hispidulin and its derivatives
发明人：HUANG WEI-JAN; HSU KAI-CHENG; CHIOU LIH-CHU; CHEN LIANG-CHIEH; TSENG HUI-JU; FAN PI-CHUAN
权利人:UNIV TAIPEI MEDICAL
摘要:Provided is a method for preparing hispidulin or a derivative thereof. The method includes selective protection of trihydroxybenzaldehyde, followed by regioselective iodination, selective protection, Stille coupling, Baeyer-Villiger oxidation and basic hydrolysis to obtain a protected intermediate compound. Then, alkylation, Claisen-Schmidt condensation, cyclization and deprotection of the protected intermediate compound are performed to obtain hispidulin or the derivative thereof. The present disclosure provides an efficient method for total synthesis of hispidulin or the derivative thereof with concise reaction steps and high yield.

专利号:WO-2024263709-A2
优先权日:2023-06-23
标 题 :Synthesis of catechol-based adsorbents using microwave radiation and selective separation technology for metal and metalloids