Abstract:
본 발명은 미백활성이 우수한 하기 사이클릭 티오 유레아 유도체, 이의 제조 방법 및 이 물질을 유효성분으로 하는 과색소 침착과 관련된 피부질환 예방·치료용 조성물과 미백용 화장료 조성물에 관한 것이다. 본 발명의 화합물을 유효성분으로 함유하는 조성물은 종래의 미백제에 비해 멜라닌 색소의 생성을 효과적으로 억제하고 피부에 과도한 멜라닌 색소의 침착을 방지하거나 또는 이미 침착된 멜라닌 색소의 색을 엷게 하여 기미, 주근깨 등의 과색소 침착 피부질환을 개선하며 효율적인 미백제로 사용할 수 있다. 사이클릭 티오 유레아, 테트라하이드로피리미딘-2-티온, 이미다졸리딘-2-티온, 제법, 미백, 화장품, 과색소 침착, 피부질환, 조성물
Abstract:
PURPOSE: A dihydroquinazoline-2-thion derivative with an effect of suppressing melanogenesis is provided to effectively suppress pigmentation and to relieve hyperpigmentation. CONSTITUTION: A dihydroquinazoline-2-thion derivative is denoted by chemical formula 1. In chemical formula 1, R1 is -CH3 or -Cl. A composition for preventing or treating hyperpigmentary dermatitis contains dihydroquinazoline-2-thion derivative as an active ingredient. A cosmetic composition for whitening contains dihydroquinazoline-2-thion derivative as an active ingredient. A method for preparing the dihydroquinazoline-2-thion derivative compound comprises: a step of coupling amine compounds with 2-nitrobenzyl chloride derivative or 2-nitrobenzaldehyde derivative to obtain intermediate, 2-nitrobenzyl amine derivative; a step of reducing the nitro group of the intermediate with amino group to convert to 2-amino benzyl amine derivative; a step of reacting the derivative with N,N'-carbonyl diimidazole(CDI) to obtain dihydroquinazoline-2-one derivative; a step of treating the intermediate with a reagent.
Abstract:
PURPOSE: A novel chalcone-based derivative is provided, which has an interleukin-5 inhibiting effect and a chronic allergic inflammation curing effect and is a low molecule and a non-peptide material. CONSTITUTION: The novel chalcone-based derivative represented by the formula(1) is produced by condensing a compound represented by the formula(2) and a compound represented by the formula(3) in an alcohol solvent in the presence of a base, wherein the alcohol solvent is a C1-C5 alcohol and the base is sodium hydroxide or potassium hydroxide. In the formulas, R1 and R2 are benzyloxy, cyclohexyl methoxy, hydrogen, or hydroxy and R3 is hydroxy or -COOH.
Abstract:
PURPOSE: Isoflavonone derivative which inhibits IL-5 activity are provided. The derivative inhibits the introduction of eosinophil which is an inflammatory cell causing asthma into the airway, and improves the airway sensitivity to alleviate asthma symptom. CONSTITUTION: The isoflavonone derivatives of the formula (1) inhibiting IL-5 activity is provided, wherein R1 is benzyloxy, hydrogen or hydroxy; R2 is benzyloxy, hydrogen or hydroxy; R3 is hydroxy, -OCH2COOCH3, -OCH2COOH or compound groups of formula (2). The method for preparing the isoflavonone derivative of the formula (1) comprises the steps of: reacting a compound of the formula (3) to prepare an isoflavonone derivative of formula (1-1); reacting the compound of the formula (1-1) with benzyl triammonium chloride and glucopyranosyl bromoacetate in the presence of base to prepare a compound of the formula (1-2); reacting the compound of the formula (1-1) with epichlorohydrin in the presence of base to prepare an epoxymethyl derivative of the formula (1-4); and reacting the compound of formula (1-4) with anhydrous sodium acetate and titanium tetraisopropoxide in acetic acid to prepare a compound of the formula (1-5), deprotecting the compound of the formula (1-4) to prepare a compound of the formula (1-6), and reacting the compound of the formula (1-4) with sodium acetate and titanium tetraisopropoxide in methanol to prepare compounds of the formulas (1-7) and (1-8).