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:
본 발명은 하기 화학식(I)로 표시되는 세사몰 유도체 또는 그의 염, 그 제조방법, 및 이를 함유하는 피부외용제 조성물에 관한 것이다. 더욱 상세하게는 인산 디에스테르 결합에 의해 연결된 세사몰과 3-아미노프로판 인산이 피부에 존재하는 효소에 의해 분해되어 세사몰과 3-아미노프로판 인산의 생리활성을 동시에 나타낼 수 있는 세사몰 유도체 또는 그의 염, 그 제조방법, 및 이를 함유하는 피부외용제 조성물에 관한 것이다. [화학식 I]
Abstract:
본 발명은 해조류 섬유를 원료로 하여 만들어진 부직포에 관한 것이다. 보다 자세하게는 일반적으로 사용되는 부직포에서 나일론이나 면사 등의 기존 섬유 대신 해조류 섬유를 사용하여 부직포를 제조하고 이를 마스크팩이나 시트, 패치 제형에 활용시킴으로써 친환경적인 공법을 이용하여 제조된 해조류 섬유의 우수한 함수율과 유해성분 흡착 능력을 활용하여 화장료 유효성분의 전달 능력과 그 효능을 극대화시킨 제품에 관한 것이다. 해조류 섬유, 해조류 펄프, 마스크팩, 부직포, 패치
Abstract:
A retinoic acid derivative is provided to exhibit a collagen production effect and a collagenase expression inhibition effect and cause less skin irritation. A method for preparing a retinoic acid derivative includes the steps of: (i) reacting retinoic acid with alkylchloroformate to prepare an anhydride compound represented by the following formula 2; and (ii) reacting the prepared anhydride compound with an amine hydrochloride represented by the following formula 3 to prepare the retinoic acid derivative represented by the following formula 1. In the formulae, R1 is hydrogen, linear or branched C1-7 alkyl or C3-7 cycloalkyl, R2 is hydroxyl, linear or branched C1-7 alkyl substituted by 1-4 hydroxyl groups, or linear branched C1-5 alkyl substituted by hydroxy pyranone, and R3 is C1-7 alkyl.
Abstract:
A hydroxycinnamic acid derivative compound is provided to realize improved anti-oxidation property and skin permeability, effects of inhibiting active oxygen and melanin generation and stimulating procollagen generation, thereby providing a cosmetic composition for improving wrinkles and whitening. A hydroxycinnamic acid derivative compound has an adamantyl amide linking group and is represented by the following formula I. In formula I, R1 is H or a C1-C7 alkyl group; and A is -CH=CH- or -CH2-CH2-. The hydroxycinnamic acid derivative compound is obtained by the method comprising the steps of: (1) substituting the hydroxyl group of hydroxycinnamic acid with an acetyl group to provide an acetylated compound; (2) reacting the acetylated compound with ethyl chloroformate and oleophilic group-containing adamantanamine to provide an amide compound; and (3) hydrolyzing the acetyl group of the amide compound.
Abstract:
A 4-substituted benzoic acid derivative compound having 3,4-methylenedioxybenzene or 3,4-ethylenedioxybenzene moiety is provided to promote the biosynthesis of main constituents of skin dermis such as collagen, elastin, fibrillin, glycosaminoglycan(GAG) closely related to skin wrinkles, thereby being usefully used as medicines and skin external applying agents for preventing aging and improving the wrinkles. An anti-aging cosmetic composition comprises 0.01-20.0 wt.% of a 4-substituted benzoic acid derivative compound having 3,4-methylenedioxybenzene or 3,4-ethylenedioxybenzene moiety and represented by the formula(I), wherein R1 is -CH2- or -CH2=CH2-, R2 is the structural formula(Ia), and R3 is H, methyl or ethyl. A method for preparing the 4-substituted benzoic acid derivative compound comprises the steps of: (a) preparing a compound(1) represented by the formula(1) from 3,4-methylenedioxybenzoic acid or 3,4-ethylenedioxybenzoic acid; and (b) hydrolyzing the compound of the formula(1) with a base to prepare a compound(2) represented by the formula(2).
Abstract:
2,3-Dihydroxybenzoic acid derivatives, a preparation method thereof, and a skin-whitening cosmetic composition containing the same compounds are provided to inhibit activity of tyrosinase and melanin formation while cytotoxicity of the compounds is very low, so that the compounds are useful for improvement of pigmentation in the skin. The method for preparing the 2,3-dihydroxybenzoic acid derivatives represented by the formula(1) comprises the steps of: (A) reacting 2,3-dihydroxybenzoic acid with acetic acid anhydride in the presence of base to prepare a 2,3-diacetyloxybenzoic acid compound represented by the formula(2); (B) preparing an amide compound represented by the formula(3) from the 2,3-diacetyloxybenzoic acid compound by using ethylchloroformate and amine having a lipophilic group; and (C) hydrolyzing an acetyl group of the amide compound represented by formula (3) to prepare 2,3-dihydroxybenzoic acid represented by the formula (1), wherein R is 4-ethoxyphenyl, 2-cyclohexenylethyl, cycloheptyl, cyclohexyl, tert-octyl, 4-isopropylphenyl, 2,3-dihydrobenzo[1,4]dioxin-7-yl, benzo[1,3]-dioxol-6-yl or adamantyl-1-yl; and the amine having the lipophilic group is an amine selected from 4-ethoxyphenylamine, 2-cyclohexenylethylamine, cycloheptylamine, cyclohexylamine, tert-octylamine, 4-isopropylphenylamine, 2,3-dihydrobenzo[1,4]dioxin-7-amine, benzo[1,3]-dioxol-6-amine or adamantyl-1-amine. The skin-whitening cosmetic composition contains 0.01-20 wt.% of the 2,3-dihydroxybenzoic acid derivatives represented by the formula(1).