CAS: 10176-66-6; 5,7-Dihydroxy-6,8-Dimethoxy-2-(4-Methoxyphenyl)-4H-Chromen-4-One

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CAS号481-53-8 桔皮素

📜2,4,6-三羟基苯乙酮一水合物置于n-溴代丁二酰亚胺(Nbs),Sodium,Potassium Carbonate,Copper(Ll) Bromide体系中,用 N,N-二甲基甲酰胺,丙酮,三氟乙酸 用作溶剂,化学反应 30.17H,反应生成5,7-二羟基-6,8,4'-三甲氧基黄酮
参考文献:一种石吊兰素的制备方法
标题:一种石吊兰素的制备方法
摘要:本发明提供的一种石吊兰素的制备方法,具有这样的特征,包括如下制备步骤:步骤一,采用间苯三酚和醋酸酐为反应原料,在三氟化硼乙醚的催化下进行friedel-crafts反应,得到2,4,6‑三羟基苯乙酮;步骤二,将步骤一得到的2,4,6‑三羟基苯乙酮和对甲氧基苯酰氯在碳酸钾的催化下进行成环反应,得到5,7‑二羟基‑4'‑甲氧基黄酮;步骤三,将步骤二得到的5,7‑二羟基‑4'‑甲氧基黄酮在nbs的催化下进行自由基反应,得到5,7‑二羟基‑6,8‑二溴‑4'‑甲氧基黄酮;步骤四,将步骤三得到的5,7‑二羟基‑6,8‑二溴‑4'‑甲氧基黄酮和甲醇钠在溴化亚铜的催化下进行甲氧基化反应,得到石吊兰素.

专利信息

专利号:US-2007232495-A1
优先权日:2006-03-24
标题:Compositions and methods to add value to plant products, increasing the commercial quality, resistance to external factors and polyphenol content thereof
发明人：NAPPA ALVARO O; LORENZINI FELIPE C; SANHUEZA ANDRES L
权利人:NAPPA ALVARO O; LORENZINI FELIPE C; SANHUEZA ANDRES L
摘要:The invention is related to compositions and methods that naturally protect plant tissues against ultraviolet radiation and temperature, thus giving protection against sunburn to plants, plant parts, fruits and/or flowers during their development. The invention is also related to compositions and methods to naturally improve the color of plants, plant parts, fruits and/or flowers by inducing the natural synthesis of flavonoids and anthocyanins present in plants. Likewise, the present invention is directed to improving the nutritional value of plants, plant parts, fruits and/or flowers by increasing the normal levels of polyphenolic compounds, especially flavonoids, present therein. Additionally, the present invention is related to compositions and methods that give more resistance to plants, plant parts, fruits and/or flowers against pathogens as bacteria and fungi. Finally, the present invention is related to plants, plant parts, fruits, flowers and/or propagating material treated with the compositions described in the present document.

专利号:US-2020261485-A1
优先权日:2015-12-16
标题:Compositions comprising 3'-o-glucuronide epicatechin and methods of making and using such compositions
发明人：ACTIS GORETTA LUCAS; PATIN AMAURY; MICHLIG GONZALEZ STEPHANIE; CAMACHO SUSANA; LEGRAND COLINE; LE COUTRE JOHANNES; CASTANEDA GUTIERREZ EURIDICE; SILVA ZOLEZZI IRMA
权利人:NESTEC SA
摘要:Compositions can comprise the flavanol metabolite 3′-O-glucuronide epicatechin (3GEC). In some embodiments, the amount of 3GEC is effective to increase energy expenditure, sympathetic nervous system activity, and/or fat oxidation. Such a composition can be used in a method to support weight management or promote weight loss, a method for preventing obesity or overweight, and a method for treating obesity or overweight. In some embodiments, the composition can improve insulin sensitivity, glucose tolerance, cognitive performance, cognition, mood and/or memory. In some embodiments, the composition can achieve a therapeutic effect selected from the group consisting of blood vessel dilation, reduced blood pressure, increased delivery of blood flow to tissues in the body, improvement of blood circulation, e.g. in brain, stimulation of protein synthesis, increased release of growth factors, enhanced immune function, and combinations thereof. In some embodiments, the composition can treat or prevent dysphagia, e.g., by provoking the swallowing reflex.

专利号:CN-115612114-A
优先权日:2021-07-14
标 题:Method and application of copolymer film and its enzymatic self-assembly synthesis