Abstract:
Provided is a 3,5-dihydroxybenzoic acid derivative, which shows an elastase inhibitory effect and an excellent effect of scavenging free radicals generated by UV irradiation, has an excellent anti-aging effect, and is useful for an anti-aging cosmetic composition. The 3,5-dihydroxybenzoic acid derivative is a compound represented by a formula 1, substituted with hydroxyl groups at 3,5-position thereof and the amide group being substituted with a bulky substituent. The 3,5-dihydroxybenzoic acid derivative is obtained by the method comprising the steps of: (A) reacting 3,5-dihydroxybenzoic acid with acetic anhydride to form 3,5-diacetyloxybenzoic acid; (B) forming an amide compound from the 3,5-diacetyloxybenzoic acid by using ethyl chloroformate and an oleophilic group; and (C) hydrolyzing the acetyl group of the amide compound to provide a 3,5-dihydroxybenzoic acid derivative.
Abstract:
본 발명은 유용성 활성물질을 안정화한 수분산 양이온성 고분자 나노캡슐 및 이의 제조방법, 및 상기 수분산 양이온성 고분자 나노캡슐을 함유하는 화장료 조성물에 관한 것이다. 보다 상세하게는, 본 발명의 수분산 양이온성 고분자 나노캡슐은 (1) 활성물질을 흡착할 수 있는 양이온성 관능기를 갖는 소수성 고분자를 중합하는 단계; 및 (2) 상기 (1)단계의 소수성 고분자 및 유용성 활성성분을 유기용매에 용해시킨 후 교반하면서 수상과 유기상을 혼합시켜 에멀젼을 제조하고, 유기상을 증발시켜 수상에 존재하는 유용성 활성성분을 포집한 나노캡슐을 제조하는 단계;로 유용성 활성성분을 담지한 수분산 양이온성 고분자 나노 캡슐을 제조하며, 상기의 단계로 제조된 양이온성 고분자 나노캡슐은 유용성 활성물질이 고분자입자 내 존재하는 양이온성 그룹에 흡착되어 있으며, 이로 인해 활성물질을 입자 내부의 양이온 그룹과 고분자벽제에 의해 외부자극으로부터 차단하는 이중 안정화시스템으로 우수한 안정화효과를 나타낸다. 수분산 * 나노 캡슐 * 활성물질 * 양이온성 * 모이어티
Abstract:
A skin external composition containing the extracts of Korean medicinal flowers is provided to express bright skin by covering pigmentation on the skin, maintain moisturizing effects for a long period of time, and improve wrinkle and elasticity of the skin. The skin external composition contains the extracts of at least one Korean medicinal flower selected from Althea rosea, Chrysanthemum morifolium, Prunus persica, Rosa rugosa and Nelumbo nucifera, wherein the amount of Korean medicinal flower extracts is 0.0001-10 wt.% based on the total weight of the composition. The extracts of Korean medicinal flowers are prepared by independently extracting Korean medicinal flowers with 70% ethanol at room temperature for 48 hours, filtering the extract with filter paper, and concentrating the filtered solution at 50 deg.C under reduced pressure.
Abstract:
A cosmetic composition for suppressing sebum comprising catechins and kaempferol is provided to reduce activity of PPAR-gamma(peroxisome proliferator-activated receptor gamma) and suppress production of sebum, so that acnes symptom is alleviated. The cosmetic composition for suppressing sebum comprises catechins and kaempferol derived from green tea leaf, wherein the catechin is selected from (-)EGCG(epigallocatechin gallate), (-)GCG(gallocatechin gallate), (-)ECG(epicatechin gallate), (-)CG(catechin gallate), (-)EGC(epigallocatechin), (-)GC(gallocatechin), (-)EC(epicatechin), (+)EC(epicatechin), (-)CA(catechin) and (+)CA(catechin). The mixing ratio of catechins and kaempferol is 1:0.1-10, and the amounts of catechins and kaempferol are 0.001-30 wt.% respectively based on the total weight of the composition.
Abstract:
A skin cosmetic composition is provided to inhibit activity of 3beta-hydroxysteroid dehydrogenase and metabolic pathway thereof, thereby decreasing dihydrotestosterone(DHT), which is a final metabolite and being effective for improving sebum metabolism or acne. The skin cosmetic composition for inhibiting activity of 3beta-hydroxysteroid dehydrogenase comprises 0.001-30 wt.% of at least one selected from the group consisting of epigallocatechingallate(EGCG), gallocatechingallate(GCG), quercetin, kaempferol and myricetin as an effective ingredient.
Abstract:
Sesamol derivatives and a process for preparing the same compounds are provided to improve anti-oxidizing activity and stability of sesamol, recover the skin damaged by reactive oxygen species, prevent aging of biological membranes, and inhibit production of peroxides of unsaturated fatty acid and its derivatives. The sesamol derivatives represented by the formula(1) are provided, wherein the sesamol derivatives are prepared by reacting sesamol with adamantanol in an equivalence ratio of 1:1.0~1.3 under acid condition, and recrystallizing the resulting product in polar solvent; the acid is hydrochloric acid, nitric acid, sulfuric acid, p-toluenesulfonic acid, benzene sulfonic acid, acetic acid, trichloroacetic acid or trifluoroacetic acid; the solvent used in the reaction is dichloromethane, tetrahydrofuran, ethyl acetate, acetonitrile, chloroform, ethyl ether, trichloro ethylene, benzene or toluene; and the polar solvent is methanol, ethanol, isopropanol, acetone, acetonitrile or water.
Abstract:
Provided are a hydroxybenzoic acid amide compound which suppresses the generation of melanin, its preparation method, and a whitening cosmetic composition containing the compound. The hydroxybenzoic acid amide compound is represented by the formula 1, wherein R1 and R2 are H or OH. The method comprises the steps of dissolving hydroxybenzoic acid in a solvent, adding a catalyst and a base drop by drop, and reacting it with acetic anhydride to prepare an acetylated compound represented by the formula II; dissolving the acetylated compound of the formula II in a solvent and adding a base, ethyl chloroformate and adamantamine to prepare an amide compound represented by the formula III; and reacting the amine compound of the formula III with a base to hydrolyze it (See the reaction scheme 1), wherein R3 and R4 is H or an acetoxy group.
Abstract:
Provided are a gallic acid adamantamine amide compound which inhibits the generation of melanin, a method for preparing the compound, and a cosmetic composition containing the compound. The gallic acid adamantamine amide compound is represented by the formula 1. The method comprises the steps of dissolving gallic acid in a solvent, adding a catalyst and a base to the solution drop by drop, and reacting it with acetic anhydride to prepare the acetylated compound represented by the formula II (See the reaction scheme 1); dissolving the acetylated compound in a solvent and adding a base, ethyl chloroformate and adamantamine to prepare the amide compound represented by the formula III; and reacting the obtained amide compound with a base to hydrolyze it, thereby preparing the gallic acid adamantamine amide compound represented by the formula 1. Preferably the catalyst is dimethyl aminopyridine; and the base is triethylamine.
Abstract:
본 발명은 미숙성 감귤 추출물을 유효성분으로 함유하는 미백용 피부 화장료 조성물에 관한 것으로서, 더욱 상세하게는 미숙성 온주밀감 추출물을 단독으로 사용하거나 여기에 진지향 추출물, 팔삭 추출물 등 온주밀감 이외의 감귤 추출물을 혼합하여 함유함으로써 피부에 대한 부작용 없이 안전하게 사용할 수 있을 뿐만 아니라 멜라닌 생성을 억제하여 색소 침착을 저해하는 효과가 뛰어나 기미 또는 주근깨 개선 및 피부 미백 효과가 우수한 미백용 피부 화장료 조성물에 관한 것이다. 감귤, 미숙성 온주밀감, 온주밀감, 진지향, 팔삭, 미백, 화장료 조성물
Abstract:
본 발명은 하기 화학식 1로 표시되는 히드록삼산(Hydroxamic acid) 유도체 및 그 제조방법에 관한 것이다: [화학식 1]
상기 식 중에서, R 1 및 R 2 는 수소, C 1-10 의 알킬 또는 C 3-6 의 알킬 고리이고; R 3 는 CONH, NHCO, CONR 5 , 또는 NR 5 CO 이며, 이때, R 5 는 수소 또는 C 1-10 의 알킬이고; 및 R 4 는 -(CH)n- 이며, n = 0, 1이다. 또한 본 발명은 상기 화학식 1의 히드록삼산 유도체를 유효성분으로 함유하는 피부노화 방지용 피부 외용제 조성물에 관한 것이다. 레티노이드 * 레티노익산 수용체 * 히드록삼산 유도체 * 항노화 * 콜라겐 * 엘라스틴 * 콜라게나아제 발현억제 * 엘라스테이즈 발현억제 * 탄력 개선 * 피부 외용제