[EN] HYDROXAMIC ACID DERIVATIVES AND THE METHOD FOR PREPARING THEREOF<br/>[FR] DERIVES D'ACIDE HYDROXAMIQUE ET LEUR METHODE DE PREPARATION
申请人:AMOREPACIFIC CORP
公开号:WO2005019162A1
公开(公告)日:2005-03-03
The present invention provides hydroxamic acid derivatives represented by the following formula (I), having anti-aging efficacy and a method for preparation thereof: wherein, R1 is or, herein, R5 and R6 each independently represents a hydrogen atom, a C1-C10 alkyl group or a C3-C6 cyclic alkyl group; R2 is CONH, NHCO, CONR7 or NR7CO, herein, R7 represents a C1-C10 alkyl group; R3 is (CH)n-, herein, n=0 or 1; and R4 is a hydrogen atom or a C1-C10 alkyl group. Further, the present invention provides skin-care external compositions for preventing skin aging, containing said hydroxamic acid derivatives represented by the formula (I) as an active ingredient.
本发明提供了以下式(I)所代表的羟羧胺衍生物,具有抗衰老功效以及其制备方法:其中,R1为或,此处,R5和R6分别独立表示氢原子、C1-C10烷基或C3-C6环烷基;R2为CONH、NHCO、CONR7或NR7CO,此处,R7表示C1-C10烷基;R3为(CH)n-,此处,n=0或1;R4为氢原子或C1-C10烷基。此外,本发明提供了用作预防皮肤衰老的护肤外用组合物,含有所述式(I)代表的羟羧胺衍生物作为活性成分。