4-alkylresorcinol derivative and external preparation for skin containing the same
申请人:Fukunishi Hirotada
公开号:US08486919B2
公开(公告)日:2013-07-16
The present invention provides a compound that has a high whitening effect and is excellent in safety and stability and provides an external preparation for skin comprising the same. The compound of the present invention is a 4-alkylresorcinol derivative represented by formula (1) or a salt thereof:
wherein R1 is a branched or cyclic alkyl group of 3 to 7 carbon atoms or a linear alkyl group of 2 to 5 carbon atoms; R2 and R3 are each independently a hydrogen atom or a group represented by —P(O)(OR4)(OR5), and at least one of R2 and R3 is a group represented by —P(O)(OR4)(OR5); and R4 and R5 are each independently a hydrogen atom or a linear or branched alkyl group of 2 to 5 carbon atoms.
4-Alkylresorcinol Derivative And External Preparation For Skin Containing The Same
申请人:Fukunishi Hirotada
公开号:US20130109878A1
公开(公告)日:2013-05-02
The present invention provides a compound that has a high whitening effect and is excellent in safety and stability and provides an external preparation for skin comprising the same. The compound of the present invention is a 4-alkylresorcinol derivative represented by formula (1) or a salt thereof:
wherein R
1
is a branched or cyclic alkyl group of 3 to 7 carbon atoms or a linear alkyl group of 2 to 5 carbon atoms; R
2
and R
3
are each independently a hydrogen atom or a group represented by —P(O)(OR
4
)(OR
5
), and at least one of R
2
and R
3
is a group represented by —P(O)(OR
4
)(OR
5
); and R
4
and R
5
are each independently a hydrogen atom or a linear or branched alkyl group of 2 to 5 carbon atoms.