申请人:Roche Vitamins Inc.
公开号:US06416746B1
公开(公告)日:2002-07-09
The invention relates to novel indanylidene compounds which are effective in absorbing ultra violet radiation and to light screening compositions including the indanylidene compounds of the general formula I
wherein
X is O or NH;
R1 is a C1-C20 alkyl, C2-C20 alkyl in which at least one methylene group is replaced by oxygen, C3-C20 alkenyl, C3-C20 alkynyl or a group YS;
R2 is a C1-C20 alkyl, C2-C20 alkyl in which at least one methylene group is replaced by oxygen, C3-C20 alkenyl, C3-C20 alkynyl or a group YS; or R1 and R2 may combine on adjacent C-atoms to form a dioxomethylene ring;
R3 is a C1-C20 alkyl, C2-C20 alkyl in which at least one methylene group is replaced by oxygen, C3-C20 alkenyl, C3-C20 alkynyl or a group YS;
R4, R5, R6 are each independently H or C1-C20 alkyl;
n is 0, 1 or 2;
Y is a linker group;
S is a silane-, an oligosiloxane- or a polysiloxane-moiety; with the proviso that at least one of the R1, R2or R3 residues is YS.
Methods for protecting skin from UV damage using a light screening agent containing one of the indanylidene compounds of the present invention are also provided.
该发明涉及一种新型吲哚亚甲基化合物,其在吸收紫外辐射方面具有有效性,并且涉及包括具有一般式I的吲哚亚甲基化合物的光屏蔽组合物,其中X为O或NH;R1为C1-C20烷基,C2-C20烷基,其中至少一个亚甲基团被氧替代,C3-C20烯基,C3-C20炔基或YS基团;R2为C1-C20烷基,C2-C20烷基,其中至少一个亚甲基团被氧替代,C3-C20烯基,C3-C20炔基或YS基团;或者R1和R2可以在相邻的碳原子上结合形成二氧亚甲基环;R3为C1-C20烷基,C2-C20烷基,其中至少一个亚甲基团被氧替代,C3-C20烯基,C3-C20炔基或YS基团;R4、R5、R6分别独立地为H或C1-C20烷基;n为0、1或2;Y为连接基团;S为硅烷基、寡硅氧烷基或聚硅氧烷基;但至少其中一个R1、R2或R3残基为YS。还提供了使用含有本发明吲哚亚甲基化合物之一的光屏蔽剂保护皮肤免受紫外线损伤的方法。