CAS: 482-38-2; 5-Hydroxy-2-(4-Hydroxyphenyl)-3,7-Bis(((2S,3R,4R,5R,6S)-3,4,5-Trihydroxy-6-Methyltetrahydro-2H-Pyran-2-yl)Oxy)-4H-Chromen-4-One

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CAS号1374991-37-3 (2S,3R,4R,5S,6S... | CAS号55317-02-7 2-甲氧基-1-(2,4,6-... | CAS号108-73-6 间苯三酚 | CAS号1254191-99-5 3,7-di-O-benzyl... | CAS号482-39-3 阿福豆苷 | CAS号520-18-3 山奈酚 | CAS号3615-41-6 α-鼠李糖 | CAS号6014-42-2 鼠李糖 | CAS号14917-55-6 甲基α-L-吡喃鼠李糖苷 | CAS号73-34-7 6-methyloxane-2...

📜山奈酚置于吡啶,甲醇,4-二甲氨基吡啶,三苯基膦双(三氟甲磺酰亚胺)金,Palladium 10% On Activated Carbon,三氟化硼乙醚,氢气,Potassium Carbonate体系中,用 四氢呋喃,二氯甲烷,N,N-二甲基甲酰胺 作为反应溶剂,化学反应 2.0H,反应生成 山奈苷
参考文献:Efficient Synthesis Of Kaempferol 3,7-O-Bisglycosides Via Successive Glycosylation With Glycosyl Ortho-Alkynylbenzoates And Trifluoroacetimidates
标题:Efficient Synthesis Of Kaempferol 3,7-O-Bisglycosides Via Successive Glycosylation With Glycosyl Ortho-Alkynylbenzoates And Trifluoroacetimidates
摘要:Selective Glycosylation Of The 3-Oh Of 5,4'-Di-O-Acetyl-Kaempferol Was Achieved With Glycosyl Orthoalkynylbenzoates As Donors Under The Catalysis Of Ph(3)Palintf(2),And Subsequent Glycosylation Of The Remaining 7-Oh With Glycosyl Trifluoroacetimidates Under The Catalysis Of Bf3.Oet2,After Global Deprotection,Afforded The Kaempferol 3,7-O-Bisglycosides Conveniently. (C) 2012 Elsevier Ltd. All Rights Reserved.
DOI:10.1016/j.Tetlet.2012.03.103

专利信息

专利号:US-12036300-B2
优先权日:2021-03-31
标题:Methods and compositions for improving skin
发明人：LIAO I-CHIEN; BRIEVA PATRICIA; JUCHAUX FRANCK; BOUEZ CHARBEL; ZHENG QIAN; QIAN KUN
权利人:OREAL
摘要:A method for managing skin tone comprising reducing the synthesis of melanin by applying a skin treatment composition to skin. The skin treatment composition may include about 0.1 to about 25 wt. % of acetyl trifluoromethylphenyl valylglycine; about 0.5 to about 30 wt. % of a polyol; about 0.1 to about 30 wt. % of a silicone, fatty compound, or a mixtures thereof, wherein the skin treatment composition is an emulsion, and all weight percentages are based on the total weight of the skin treatment composition.

专利号:EP-1493431-B1
优先权日:2003-07-03
标题:Use of an extract of bauhinia for the preparation of pharmaceutical and cosmetic compositions
发明人：WIRTH CORINNA DR; BUCHHOLZ HERWIG DR
权利人:MERCK PATENT GMBH
摘要:Use of an aqueous or aqueous-alcoholic extract (A) of Bauhinia is claimed to make a composition for cosmetic or pharmaceutical treatment of skin and hair. Use of an aqueous or aqueous-alcoholic extract (A) of Bauhinia is claimed to make a composition for: (a) care, preservation or improvement of the general condition of the skin or hair; (b) prevention and/or inhibition of the aging process for human skin or hair; (c) for promoting healing of wounds; (d) for prevention and/or treatment of skin diseases associated with abnormal keratinization, and (e) for prevention and/or treatment of all malignant or benign growths of the dermis or epidermis. An independent claim is also included for a composition containing (A). ACTIVITY : Dermatological; Vulnerary; Antiseborrheic; Antipsoriatic; Cytostatic; Antiinflammatory; Virucide. MECHANISM OF ACTION : Protein glycosylation inhibitor. In a test, human fibroblasts were cultured in the presence of Vitamin C to stimulate collagen synthesis, then lysed and labeled with tritiated glucose for 15 days, Proteins were removed, extraction and precipitation were carried and the amount of bound glucose measured by liquid scintillation counting. Addition of an aqueous-alcoholic extract of Bauhinia fortificata (0.03 mg/ml), reduced protein glycosylation to 55% of that in a control.