Carboxylated polyphenol derivatives and their cosmetic use

Patent metadata

Field	Value
Publication number	US-11253455-B2
Application number	US-201716088105-A
Country	US
Kind code	B2
Filing date	Mar 31, 2017
Priority date	Mar 31, 2016
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A subject matter of the present invention is the cosmetic use of at least one compound of formula (I): in which: (II) denotes a divalent radical chosen from a carbon-carbon single bond *—CH2—CH2—* or double bond *—CH═CH—*, of Z or E configuration or their mixtures, b=0 or 1, c=0 or 1, d=0, 1 or 2, and R and R′ independently denote a hydrogen atom, a linear C1-C6 alkyl radical or a branched C3-C6 alkyl radical, to treat and/or prevent signs of aging and/or of photoaging of keratinous substances, preferably of the skin, and/or to depigment, lighten and/or whiten keratinous substances, preferably the skin. The present invention also relates to novel compounds and to a corresponding cosmetic method.

First claim

The invention claimed is:

1. A method for the cosmetic treatment of keratinous substances, comprising applying to the keratinous substances, a composition, comprising at least one compound of formula (III):

wherein:
c=0 or 1,
wherein, if c=1, then the COOR′ group is in the ortho position with respect to a phenol functional group, and
R and R′ independently denote a hydrogen atom, a linear C 1 -C 6 alkyl radical or a branched C 3 -C 6 alkyl radical, one of its stereoisomers and/or solvates and/or one of its salts.

2. A method for the cosmetic treatment of keratinous substances, comprising applying to the keratinous substances, a composition, comprising at least one compound of formula (III′):

wherein:
c=0 or 1,
wherein, if c=1, then the corresponding carboxylate functional group is in the ortho position with respect to a phenol functional group, and
R and R′ independently denote a hydrogen atom, a linear C 1 -C 6 alkyl radical or a branched C 3 -C 6 alkyl radical one of its stereoisomers and/or solvates and/or one of its salts.

3. A method for the cosmetic treatment of keratinous substances, comprising applying to the keratinous substances, a composition, comprising, at least one compound of formula (IV):

wherein:
c=0 or 1,
d=0, 1 or 2,
wherein, if c=1, then d≥1 and the COOR′ group is in the ortho position with respect to a phenol functional group, and
R and R′ independently denote a hydrogen atom, a linear C 1 -C 6 alkyl radical or a branched C 1 -C 6 alkyl radical, one of its stereoisomers and/or solvates and/or one of its salts.

4. A method for the cosmetic treatment of keratinous substances, comprising applying to the keratinous substances, a composition, comprising at least one compound of formula (V):

wherein:
R denotes a linear C 1 -C 6 alkyl radical or a branched C 3 -C 6 alkyl radical, one of its stereoisomers and/or solvates and/or one of its salts.

5. A method for the cosmetic treatment of keratinous substances comprising:
applying to keratinous substances a composition comprising at least one compound of formula (W):

wherein the compound of formula (W) is used to depigment, lighten and/or whiten keratinous substances.

Assignees

• Oreal

Inventors

• Hitce Julien
• Dalko Maria

Classifications

• A61K8/368

  with carboxyl groups directly bound to carbon atoms of aromatic rings · CPC title

• C07C65/19

  having unsaturation outside the aromatic ring · CPC title

• A61K8/37 Primary

  Esters of carboxylic acids · CPC title

• A61P17/18

  Antioxidants, e.g. antiradicals (preparations for protection against sunlight A61Q17/00) · CPC title

• A61Q19/02

  for chemically bleaching or whitening the skin · CPC title