US20210401709A1 - Process for depigmenting keratin materials using thiopyridinone compounds - Google Patents
Process for depigmenting keratin materials using thiopyridinone compounds Download PDFInfo
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- US20210401709A1 US20210401709A1 US17/340,594 US202117340594A US2021401709A1 US 20210401709 A1 US20210401709 A1 US 20210401709A1 US 202117340594 A US202117340594 A US 202117340594A US 2021401709 A1 US2021401709 A1 US 2021401709A1
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- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
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- 150000002696 manganese Chemical class 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 1
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- VYQNWZOUAUKGHI-UHFFFAOYSA-N monobenzone Chemical compound C1=CC(O)=CC=C1OCC1=CC=CC=C1 VYQNWZOUAUKGHI-UHFFFAOYSA-N 0.000 description 1
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- 239000003158 myorelaxant agent Substances 0.000 description 1
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- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 229960003512 nicotinic acid Drugs 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 125000001196 nonadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- WNIFXKPDILJURQ-JKPOUOEOSA-N octadecyl (2s,4as,6ar,6as,6br,8ar,10s,12as,14br)-10-hydroxy-2,4a,6a,6b,9,9,12a-heptamethyl-13-oxo-3,4,5,6,6a,7,8,8a,10,11,12,14b-dodecahydro-1h-picene-2-carboxylate Chemical compound C1C[C@H](O)C(C)(C)[C@@H]2CC[C@@]3(C)[C@]4(C)CC[C@@]5(C)CC[C@@](C(=O)OCCCCCCCCCCCCCCCCCC)(C)C[C@H]5C4=CC(=O)[C@@H]3[C@]21C WNIFXKPDILJURQ-JKPOUOEOSA-N 0.000 description 1
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- 239000003960 organic solvent Substances 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- COLNVLDHVKWLRT-UHFFFAOYSA-M phenylalaninate Chemical compound [O-]C(=O)C(N)CC1=CC=CC=C1 COLNVLDHVKWLRT-UHFFFAOYSA-M 0.000 description 1
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- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
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- 229940081310 piperonal Drugs 0.000 description 1
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- 239000003375 plant hormone Substances 0.000 description 1
- 235000021118 plant-derived protein Nutrition 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- HZLWUYJLOIAQFC-UHFFFAOYSA-N prosapogenin PS-A Natural products C12CC(C)(C)CCC2(C(O)=O)CCC(C2(CCC3C4(C)C)C)(C)C1=CCC2C3(C)CCC4OC1OCC(O)C(O)C1O HZLWUYJLOIAQFC-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- KOUKXHPPRFNWPP-UHFFFAOYSA-N pyrazine-2,5-dicarboxylic acid;hydrate Chemical compound O.OC(=O)C1=CN=C(C(O)=O)C=N1 KOUKXHPPRFNWPP-UHFFFAOYSA-N 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- NPCOQXAVBJJZBQ-UHFFFAOYSA-N reduced coenzyme Q9 Natural products COC1=C(O)C(C)=C(CC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)C)C(O)=C1OC NPCOQXAVBJJZBQ-UHFFFAOYSA-N 0.000 description 1
- 229960003471 retinol Drugs 0.000 description 1
- 235000020944 retinol Nutrition 0.000 description 1
- 239000011607 retinol Substances 0.000 description 1
- 229940108325 retinyl palmitate Drugs 0.000 description 1
- 235000019172 retinyl palmitate Nutrition 0.000 description 1
- 239000011769 retinyl palmitate Substances 0.000 description 1
- 239000010666 rose oil Substances 0.000 description 1
- 210000004761 scalp Anatomy 0.000 description 1
- 230000009758 senescence Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 235000011182 sodium carbonates Nutrition 0.000 description 1
- 229940045871 sodium palmitoyl proline Drugs 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- GJIFNLAZXVYJDI-FYZYNONXSA-M sodium;(2s)-1-hexadecanoylpyrrolidine-2-carboxylate Chemical compound [Na+].CCCCCCCCCCCCCCCC(=O)N1CCC[C@H]1C([O-])=O GJIFNLAZXVYJDI-FYZYNONXSA-M 0.000 description 1
- HSFQBFMEWSTNOW-UHFFFAOYSA-N sodium;carbanide Chemical group [CH3-].[Na+] HSFQBFMEWSTNOW-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- WNIFXKPDILJURQ-UHFFFAOYSA-N stearyl glycyrrhizinate Natural products C1CC(O)C(C)(C)C2CCC3(C)C4(C)CCC5(C)CCC(C(=O)OCCCCCCCCCCCCCCCCCC)(C)CC5C4=CC(=O)C3C21C WNIFXKPDILJURQ-UHFFFAOYSA-N 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003900 succinic acid esters Chemical class 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 150000003899 tartaric acid esters Chemical class 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ZEMGGZBWXRYJHK-UHFFFAOYSA-N thiouracil Chemical compound O=C1C=CNC(=S)N1 ZEMGGZBWXRYJHK-UHFFFAOYSA-N 0.000 description 1
- 229950000329 thiouracil Drugs 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229930003799 tocopherol Natural products 0.000 description 1
- 235000010384 tocopherol Nutrition 0.000 description 1
- 229960001295 tocopherol Drugs 0.000 description 1
- 239000011732 tocopherol Substances 0.000 description 1
- 229930003802 tocotrienol Natural products 0.000 description 1
- 239000011731 tocotrienol Substances 0.000 description 1
- 235000019148 tocotrienols Nutrition 0.000 description 1
- 229940068778 tocotrienols Drugs 0.000 description 1
- 230000000699 topical effect Effects 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 150000003918 triazines Chemical class 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- HTJNEBVCZXHBNJ-XCTPRCOBSA-H trimagnesium;(2r)-2-[(1s)-1,2-dihydroxyethyl]-3,4-dihydroxy-2h-furan-5-one;diphosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.OC[C@H](O)[C@H]1OC(=O)C(O)=C1O HTJNEBVCZXHBNJ-XCTPRCOBSA-H 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- OHOTVSOGTVKXEL-UHFFFAOYSA-K trisodium;2-[bis(carboxylatomethyl)amino]propanoate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C(C)N(CC([O-])=O)CC([O-])=O OHOTVSOGTVKXEL-UHFFFAOYSA-K 0.000 description 1
- 150000003648 triterpenes Chemical class 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229940035936 ubiquinone Drugs 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940096998 ursolic acid Drugs 0.000 description 1
- PLSAJKYPRJGMHO-UHFFFAOYSA-N ursolic acid Natural products CC1CCC2(CCC3(C)C(C=CC4C5(C)CCC(O)C(C)(C)C5CCC34C)C2C1C)C(=O)O PLSAJKYPRJGMHO-UHFFFAOYSA-N 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4906—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom
- A61K8/4926—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom having six membered rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4906—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom
- A61K8/4933—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom having sulfur as an exocyclic substituent, e.g. pyridinethione
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
- C07D213/81—Amides; Imides
- C07D213/82—Amides; Imides in position 3
Definitions
- R 2 denotes a saturated linear C 1 -C 10 or branched C 3 -C 10 or cyclic C 5 -C 6 alkyl hydrocarbon-based group, optionally interrupted with an oxygen atom and/or optionally containing a —CONH 2 group and/or optionally substituted with a hydroxyl group; a phenyl group; or a saturated C 1 -C 5 alkyl group substituted with a phenyl radical itself optionally substituted with one or more hydroxyl or C 1 -C 3 alkoxy radicals;
- R 1 denotes a hydrogen atom and R 2 denotes a radical chosen from:
- physiologically acceptable medium is understood to mean a medium that is compatible with keratin materials of human beings, such as the skin of the body or of the face, the lips, the mucous membranes, the eyelashes, the nails, the scalp and/or the hair.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Birds (AREA)
- Dermatology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Pyridine Compounds (AREA)
- Cosmetics (AREA)
Abstract
- or its tautomer form of formula (I′):
- in which:
- R1 and R2, which may be identical or different, denote a radical chosen from:
- a) a hydrogen atom;
- b) a C1-C20 alkyl group optionally interrupted with N, S or O, optionally substituted with one or more group(s) chosen from -—OR3, —SR3, —NR3R4, —CONHR3; —COORS; and an aryl group optionally substituted with one or more hydroxyls and/or with one or more C1-C8 alkoxy radicals;
- c) a C1-C8 alkyl group substituted with a C5-C12 aryl radical optionally substituted with one or more hydroxyls and/or with one or more C1-C8 alkoxy radicals;
- d) a phenyl group optionally substituted with one or more hydroxyls and/or with one or more C1-C8 alkoxy radicals;
- R3 denoting H or a C1-C5 alkyl group,
- R4 denoting H, a C1-C5 hydrocarbon-based group or an acetyl group;
- it being possible for R1 and R2 to form, with the nitrogen atom which bears them, a ring chosen from pyrrolidine, pyrroline, piperidine, piperazine, morpholine, thiomorpholine and azepine.
Description
- This application is a Continuation of U.S. Ser. No. 14/804,531, filed Jul. 21, 2015, which is a Divisional of U.S. application Ser. No. 13/994,457, filed on Aug. 8, 2013, now U.S. Pat. No. 9,138,392, which is a National Stage of Application PCT/EP2011/072180, filed on Dec. 8, 2011, which claims the benefit of priority from U.S. Provisional Application No. 61/425,258, filed Dec. 21, 2010, the entire contents of which are hereby incorporated by reference.
- The present invention relates to a cosmetic treatment process in particular for depigmenting and/or whitening the skin, that employs at least one compound of thiopyridinone type.
- At various periods in their life, certain people develop darker and/or more coloured marks on their skin, and more especially on the hands, which gives the skin a heterogeneous appearance. These marks are due in particular to a high concentration of melanin in the keratinocytes located at the surface of the skin.
- The use of harmless topical depigmenting substances which exhibit good efficacy is especially desirable with a view to treating pigmentary marks.
- The mechanism of formation of skin pigmentation, i.e. of the formation of melanin, is particularly complex and involves, schematically, the following principal steps:
- Tyrosine - - - >Dopa - - - >Dopaquinone - - - >Dopachrome - - - >Melanin
- Tyrosinase (monophenol dihydroxyl phenylalanine: oxygen oxidoreductase EC 1.14.18.1) is the essential enzyme involved in this series of reactions. It catalyzes in particular the reaction converting tyrosine to Dopa (dihydroxyphenylalanine) by virtue of its hydroxylase activity, and the reaction converting Dopa to dopaquinone by virtue of its oxidase activity. This tyrosinase acts only when it is in the mature form, under the action of certain biological factors.
- A substance is acknowledged to be depigmenting if it acts directly on the vitality of epidermal melanocytes, where melanogenesis takes place, and/or if it interferes with one of the steps of melanin biosynthesis, either by inhibiting one of the enzymes involved in melanogenesis, or by being inserted as a structural analogue of one of the chemical compounds of the melanin synthesis chain, which chain may then be blocked and thus ensure depigmentation.
- Arbutin, niacinamide and kojic acid are known as skin depigmenting agents.
- Substances have been sought which exhibit an effective depigmenting action, in particular greater than that of arbutin, niacinamide and kojic acid.
- In this regard, the applicant has found, surprisingly and unexpectedly, that certain thiopyridinone compounds exhibit good depigmenting activity, even at low concentration.
- The subject of the invention is therefore a nontherapeutic cosmetic process for depigmenting, lightening and/or whitening keratin materials, in particular the skin, which comprises the application of a cosmetic composition comprising, in a physiologically acceptable medium, at least one compound of formula (I) as defined hereinafter.
- The invention also relates to the nontherapeutic cosmetic use of a compound of formula (I) as a whitening, lightening and/or depigmenting agent for keratin materials, in particular the skin.
- The compounds used according to the invention allow effective depigmenting and/or lightening, or even whitening, of the skin of human beings. They are in particular intended to be applied to the skin of individuals exhibiting brownish pigmentation marks or senescence marks, or to the skin of individuals who wish to combat the appearance of a brownish colour arising from melanogenesis.
- They may also allow depigmentation and/or lightening of body hair, the eyelashes, head hair and also the lips and/or the nails.
- The compounds used according to the invention therefore correspond to formula (I) or (I′) below:
- in which:
- R1 and R2, which may be identical or different, denote a radical chosen from:
-
- a) a hydrogen atom;
- b) a saturated linear C1-C20 or branched C3-C20 or unsaturated C2-C20 alkyl group, optionally interrupted with one or more heteroatoms chosen from N, S and O, and/or optionally substituted with one or more groups, which may be identical or different, chosen from:
- i) —OR3
- ii) —SR3,
- iii) —NR3R4
- iv) —CONHR3
- v) —COOR3;
- vi) a C5-C12 aryl group optionally substituted with one or more hydroxyls and/or with one or more C1-C8 alkoxy radicals;
- c) a saturated C1-C8 alkyl group substituted with a C5-C12 aryl radical optionally substituted with one or more hydroxyls and/or with one or more C1-C8 alkoxy radicals;
- d) a phenyl group optionally substituted with one or more hydroxyls and/or with one or more C1-C8 alkoxy radicals;
- R3 denoting a hydrogen atom or a saturated linear C1-C5 or branched C3-C5 or unsaturated C2-C5 hydrocarbon-based group,
- R4 denoting a hydrogen atom; a saturated linear C1-C5 or branched C3-C5 hydrocarbon-based group; or an acetyl group;
- it being possible for R1 and R2 to form, with the nitrogen atom which bears them, a ring chosen from pyrrolidine, pyrroline, piperidine, piperazine, morpholine, thiomorpholine and azepine;
- and also the salts thereof, the solvates thereof and the optical isomers thereof, and the racemates thereof.
- The compound (I′) is the tautomer form of the compound (I) when a tautomeric equilibrium exists according to the following scheme:
- The salts of the compounds of formula (I) or (I′) comprise the conventional nontoxic salts of said compounds, such as those formed from acid or from base.
- As salts of the compound of formula (I) or (I′), when it comprises a quaternizable nitrogen atom), mention may be made of:
- a) the salts obtained by addition of the compound (I) or (I′) with an inorganic acid, in particular chosen from hydrochloric acid, boric acid, hydrobromic acid, hydrioic acid, sulphuric acid, nitric acid, carbonic acid, phosphoric acid and tetrafluoroboric acid;
- b) or the salts obtained by addition of the compound (I) or (I′) with an organic acid, in particular chosen from acetic acid, propionic acid, succinic acid, fumaric acid, lactic acid, glycolic acid, citric acid, gluconic acid, salicylic acid, tartaric acid, terephthalic acid, methylsulphonic acid, ethylsulphonic acid, benzenesulphonic acid, toluenesulphonic acid and triflic acid.
- Mention may also be made of the salts obtained by addition of the compound of formula (I) or (I′) (when it comprises an acid group) with an inorganic base, such as sodium hydroxide, potassium hydroxide, calcium hydroxide, ammonium hydroxide, magnesium hydroxide, lithium hydroxide, and sodium, potassium or calcium carbonates or hydrogen carbonates, for example;
- or with an organic base, such as a primary, secondary or tertiary alkylamine, for example triethylamine or butylamine. This primary, secondary or tertiary alkylamine may comprise one or more nitrogen and/or oxygen atoms and may therefore comprise, for example, one or more alcohol functions; mention may in particular be made of 2-am ino-2-methylpropanol, ethanolamine, triethanolamine, 2-dimethylaminopropanol, 2-amino-2-(hydroxymethyl)-1,3-propanediol and 3-(dimethylamino)propylamine.
- Mention may also be made of amino acids such as, for example, lysine, arginine, guanidine, glutamic acid or aspartic acid.
- Advantageously, the salts of the compounds of formula (I) or (I′) (when it comprises an acid group) may be chosen from alkali metal salts or alkaline earth metal salts, such as sodium, potassium, calcium or magnesium salts; and ammonium salts.
- Advantageously, the salts of the compounds of formula (I) or (I′) (when it comprises a quaternizable nitrogen atom) can be chosen from halides such as chloride or bromide; and citrates, acetates, succinates, phosphates, lactates and tartrates.
- The acceptable solvates of the compounds described in the present invention comprise conventional solvates such as those formed during the preparation of said compounds as a result of the presence of solvents. By way of example, mention may be made of the solvates resulting from the presence of water or of linear or branched alcohols such as ethanol or isopropanol.
- The optical isomers are in particular enantiomers and diastereoisomers.
- Preferentially, the linear or branched groups can be chosen from: methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eicosyl.
- More preferentially, the saturated linear or branched alkyl groups can be chosen from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl and octyl.
- Preferentially, the C1-C4 alkoxy groups can be chosen from methoxy, ethoxy, propoxy and butoxy, and even more preferentially methoxy.
- The compounds of formula (I) can be obtained, in a known manner, by reacting 2-mercaptonicotinic acid and an amine of formula HNR1R2 (R1 and R2 having the meanings described above), in particular in the presence of a base such as carbonyldiim idazole.
- The compounds of formula (I) can also be obtained, in a known manner, by reacting 2-mercaptonicotinic acid or 2-chloronicotinic acid with an amine of formula HNR1R2 (R1 and R2 having the meanings described above), in particular in the presence of an agent for activating carboxylic acids according to the conventional methods for activating acids (described, for example, in Comprehensive Organic Transformation by R. Larock, published by Wiley VCH, in the chapter Interconversion of nitriles, carboxylic acids and derivatives). Use is preferably made of an agent for activating carboxylic acids which makes it possible to form an acid chloride (for example, using thionyl chloride or oxalyl chloride, or 1-chloro-N,N,2-trimethyl-1-propenamine) or to form a mixed anhydride (using alkyl chloroformates), or carbodiimides or diethyl cyanophosphate are used to form carbamimidates or acylphosphonates (Phosphorus in organic synthesis-XI, Amino acids and peptides-XXI, Reaction of diethyl phosphorocyanidate with carboxylic acids. A new synthesis of carboxylic esters and amides, Tetrahedron, 32, 1976, 2211-2217).
- When 2-chloronicotinic acid is used as starting reagent, the chloroamide obtained is then used in an exchange reaction between chlorine and sulphur by means of reagents such as NaSH, thiourea, sodium thiosulphate or thioacetic acid (in basic medium).
- Compounds of formula (I) or (I′) are described in the following documents:
- EP-A-298752, WO03/014062, EP-A-298752, FR-A-2349591, EP-A-2555450, WO 03/014062 and WO 2008/012532, and in the publications
-
- article A. Monge, V. Martinez-Merino; Synthesis of 2-substituted 3-Oxoisothiazolo[5,4-b]pyridines; J. heterocyclic. Chem, 22, 1353 (1985).
- article A. Dunn, R. Norrie; Synthesis of pyrido-1,3-thiazines; Zeitschrift fur chemie 1988, vol 28, n° 6, p 212/214.
- S. Andreae; J. Parkt. Chem. 339 (1997) 152-158;
- S. Gorsuch; Biorganic & Medicinal Chemistry 17(2009) 467-474.
- A. Monge et al; J. Heterocyclic Che. 25, 23 (1988).
- M. Pregnolato; II Farmaco 55 (2000) 669-679.
- Preferably, the compounds of the formula (I) or (I′) have the following meanings:
- R1 denotes a radical chosen from:
-
- a) a hydrogen atom;
- b) a saturated linear C1-C10 or branched C3-C10 or unsaturated C2-C10 alkyl group, optionally substituted with one or more OR3 groups;
- R2 denotes a radical chosen from:
-
- a) a saturated linear C1-C10 or branched C3-C10 or cyclic C3-C7 alkyl group, optionally interrupted with one or more oxygen atoms, preferably one, and/or optionally containing one or more groups, which may be identical or different, chosen from:
- i) —OR3,
- ii) —NR3R4,
- iii) —CONHR3,
- iv) —COOR3
- b) a phenyl group optionally substituted with one or more hydroxyls and/or with one or more C1-C3 alkoxy radicals;
- c) a saturated C1-C5 alkyl group substituted with a phenyl radical optionally substituted with one or more hydroxyls or with one or more C1-C3 alkoxy radicals;
- a) a saturated linear C1-C10 or branched C3-C10 or cyclic C3-C7 alkyl group, optionally interrupted with one or more oxygen atoms, preferably one, and/or optionally containing one or more groups, which may be identical or different, chosen from:
- R3 denoting a hydrogen atom or a saturated linear C1-C5 or branched C3-C5 hydrocarbon-based group;
- R4 denoting a hydrogen atom or a saturated linear C1-C5 or branched C3-C5 hydrocarbon-based group;
- and the salts thereof, the solvates thereof and the optical isomers thereof, and the racemates thereof.
- Preferentially, the compounds of formula (I) or (I′) have the following meanings:
- R1 denotes a hydrogen atom or a linear C1-C4 alkyl radical optionally substituted with one or more hydroxyl groups;
- R2 denotes a radical chosen from:
-
- a) a saturated linear C1-C10 or branched C3-C10 or cyclic C5-C7 alkyl group, optionally interrupted with an oxygen atom and/or optionally containing a —CONH2 group and/or optionally substituted with one or more hydroxyl groups;
- b) a phenyl group;
- c) a saturated C1-C5 alkyl group substituted with a phenyl radical optionally substituted with one or more hydroxyl or C1-C3 alkoxy radicals;
- and also the salts thereof, the solvates thereof and the optical isomers thereof, and the racemates thereof.
- More preferentially, the compounds of formula (I) or (I′) have the following meanings:
- R1 denotes a hydrogen atom or a C1-C4 hydroxyalkyl group;
- R2 denotes a saturated linear C1-C10 or branched C3-C10 or cyclic C5-C6 alkyl hydrocarbon-based group, optionally interrupted with an oxygen atom and/or optionally containing a —CONH2 group and/or optionally substituted with a hydroxyl group; a phenyl group; or a saturated C1-C5 alkyl group substituted with a phenyl radical itself optionally substituted with one or more hydroxyl or C1-C3 alkoxy radicals;
- and also the salts thereof, the solvates thereof and the optical isomers thereof, and the racemates thereof.
- The subject of the invention is also the novel compounds of formulae (Ia) and (Ia′) corresponding to those of formula (I) or (I′)
- in which:
-
- when R1 denotes a hydrogen atom, then R2 denotes a radical chosen from unsaturated C2-C20 alkyls, cyclic C7 alkyl radicals, saturated linear C1-C20 or branched C3-C20 alkyls, substituted with one or more identical or different —OR3 groups, and (C1-C20)alkylaryls substituted with one or more identical or different —OR3 groups, R3 denoting a hydrogen atom or a saturated linear C1-C5 or branched C3-C5 or unsaturated C2-C5 hydrocarbon-based group;
- when R1 denotes a saturated linear C1-C10 or branched C3-C10 or unsaturated C2-C10 alkyl group, optionally substituted with one or more —OR3 groups, then R2 denotes a radical chosen from:
- a) a saturated branched C3-C12 or cyclic C3-C7 alkyl group, optionally interrupted with one or more oxygen atoms, preferably one, and/or optionally containing one or more identical or different —OR3 groups,
- R3 denoting a hydrogen atom or an optionally hydroxylated, saturated linear C1-C5 or branched C3-C5 hydrocarbon-based group;
- and also the salts thereof, the optical isomers thereof and the racemates thereof.
- Preferably, for the novel compounds of the formulae (Ia) and (Ia′):
-
- when R1 denotes a hydrogen atom, then R2 denotes a radical chosen from unsaturated C2-C20 alkyls, saturated linear C1-C20 or branched C3-C20 alkyls, substituted with one or more identical or different —OR3 groups, and (C1-C6)alkylphenyls substituted with one or more identical or different —OR3 groups, R3 denoting a hydrogen atom or a saturated linear C1-C5 or branched C3-C5 or unsaturated C2-C5 hydrocarbon-based group;
- when R1 denotes a saturated linear C1-C12 or branched C3-C10 or unsaturated C2-C10 alkyl group, optionally substituted with one or more —OR3 groups, then R2 denotes a radical chosen from:
- a) a saturated branched C3-C12 or cyclic C3-C7 alkyl group, optionally interrupted with one or more oxygen atoms, preferably one, and/or optionally containing one or more identical or different —OR3 groups,
- R3 denoting a hydrogen atom or an optionally hydroxylated, saturated linear C1-C5 or branched C3-C5 hydrocarbon-based group,
- and also the salts thereof, the optical isomers thereof and the racemates thereof.
- Preferably, for the novel compounds of formulae (Ia) and (Ia′):
-
- when R1 denotes a hydrogen atom, then R2 denotes a radical chosen from saturated linear C1-C20 or branched C3-C20 alkyls, substituted with one or more identical or different —OR3 groups, and (C1-C6)alkylphenyls substituted with one or more identical or different —OR3 groups, R3 denoting a hydrogen atom or a saturated linear C1-C5 or branched C3-C5 or unsaturated C2-C5 hydrocarbon-based group;
- when R1 denotes a saturated linear C1-C10 or branched C3-C10 or unsaturated C2-C10 alkyl group, optionally substituted with one or more —OR3 groups, then R2 denotes a radical chosen from:
- a) a saturated branched C3-C12 or cyclic C3-C7 alkyl group, optionally interrupted with one or more oxygen atoms, preferably one, and/or optionally containing one or more identical or different —OR3 groups,
- R3 denoting a hydrogen atom or an optionally hydroxylated, saturated linear C1-C5 or branched C3-C5 hydrocarbon-based group.
- Preferably, for the novel compounds of formulae (Ia) and (Ia′):
- R1 denotes a hydrogen atom and R2 denotes a radical chosen from:
- a) a saturated linear C1-C10 or branched C3-C10 or cyclic C5-C7 alkyl group, substituted with one or more hydroxyl groups, and optionally interrupted with an oxygen atom, or
- R1 denotes a linear C1-C4 alkyl radical optionally substituted with one or more hydroxyl groups; and R2 denotes a radical chosen from:
- a) a saturated linear C1-C10 or branched C3-C10 or cyclic C5-C7 alkyl group, substituted with one or more hydroxyl groups, and optionally interrupted with an oxygen atom.
- Preferentially, for the novel compounds of formulae (Ia) and (Ia′):
- R1 denotes a hydrogen atom and R2 denotes a saturated linear C1-C10 or branched C3-C10 or cyclic C5-C6 alkyl hydrocarbon-based group, optionally interrupted with an oxygen atom and optionally substituted with a hydroxyl group, or
- R1 denotes a C1-C4 hydroxyalkyl group;
- R2 denotes a saturated linear C1-C10 or branched C3-C10 or cyclic C5-C6 alkyl hydrocarbon-based group, optionally interrupted with an oxygen atom and optionally substituted with a hydroxyl group.
- Among the compounds of formula (I), the following compounds are preferably used:
-
No. Structure Chemical name CAS No. 1 N-methyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 91859-74-4 2 N-ethyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 91859-75-5 3 N-isopropyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 91859-76-6 4 N-propyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 330667-56-6 5 N-(2-methylpropyl)-2- thioxo-1,2- dihydropyridine-3- carboxamide 1100027-79-9 6 N-butyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 65282-55-5 7 N-pentyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 330667-57-7 8 N-octyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 91859-77-7 9 N-nonyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 1031149-44-6 10 N,N-dimethyl-2- mercaptonicotinamide 121650-19-9 11 N-cyclopentyl-2-thioxo- 1,2-dihydropyridine-3- carboxamide 1099928-42-3 12 N-cyclohexyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 91859-78-8 13 N-cycloheptyl-2-thioxo- 1,2-dihydropyridine-3- carboxamide 451473-73-7 14 N-phenyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 104857-16-1 15 N-benzyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 91859-79-9 16 N-[2-(4- methoxyphenyl)ethyl]-2- thioxo-1,2- dihydropyridine-3- carboxamide 923682-88-6 17 N-(3-ethoxypropyl)-2- thioxo-1,2- dihydropyridine-3- carboxamide 1061763-97-02 18 N-(2-amino-2-oxoethyl)-2- thioxo-1,2- dihydropyridine-3- carboxamide 497262-18-7 19 N-(2-hydroxyethyl)-2- thioxo-1,2- dihydropyridine-3- carboxamide 20 N,N-bis(2-hydroxyethyl)- 2-thioxo-1,2- dihydropyridine-3- carboxamide 21 N-(2,3-dihydroxypropyl)- 2-thioxo-1,2- dihydropyridine-3- carboxamide 22 N-(1,3-dihydroxypropan- 2-yl)-2-thioxo-1,2- dihydropyridine-3- carboxamide 23 N-ethyl-N-(2- hydroxyethyl)-2-thioxo- 1,2-dihydropyridine-3- carboxamide 24 N-(3-hydroxypropyl)-2- thioxo-1,2- dihydropyridine-3- carboxamide 25 N-[2-(2- hydroxyethoxy)ethyl]-2- thioxo-1,2- dihydropyridine-3- carboxamide 26 N-(3-methoxypropyl)-2- thioxo-1,2- dihydropyridine-3- carboxamide 27 N.N-diethyl 2- mercaptonicotinamide 121050-20-2 28 Ethyl N-[(2-thioxo-1,2- dihydropyridin-3- yl)carbonyl]alaninate 29 Ethyl N-[(2-thioxo-1,2- dihydropyridin-3- yl)carbonyl]phenyl alaninate 30 N-[2- (dimethylamino)ethyl]-N- ethyl-2-thioxo-1,2- dihydropyridine-3- carboxamide - Among these compounds, the following compounds are more particularly preferred:
-
No. Structure Chemical name 1 N-methyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 2 N-ethyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 3 N-isopropyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 4 N-propyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 5 N-(2-methylpropyl)-2- thioxo-1,2-dihydropyridine- 3-carboxamide 6 N-butyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 7 N-pentyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 11 N-cyclopentyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 12 N-cyclohexyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 13 N-cycloheptyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 15 N-benzyl-2-thioxo-1,2- dihydropyridine-3- carboxamide 16 N-[2-(4- methoxyphenyl)ethyl]-2- thioxo-1,2-dihydropyridine- 3-carboxamide 19 N-(2-hydroxyethyl)-2- thioxo-1,2-dihydropyridine- 3-carboxamide 20 N,N-bis(2-hydroxyethyl)-2- thioxo-1,2-dihydropyridine- 3-carboxamide 21 N-(2,3-dihydroxypropyl)-2- thioxo-1,2-dihydropyridine- 3-carboxamide 23 N-ethyl-N-(2-hydroxyethyl)- 2-thioxo-1,2- dihydropyridine-3- carboxamide 27 N,N-diethyl 2- mercaptonicotinamide
and also the salts thereof, the optical isomers thereof and the solvates thereof. - Compounds 1 and 10 are described in application EP-A-298752 as synthesis intermediates.
- Compounds 2 to 8, 11 and 12 are described in FR-A-2555450.
- Compound 14 is described in the article A. Monge, V. Martinez-Merino; Synthesis of 2-substituted 3-Oxoisothiazolo[5,4-b]pyridines; J. heterocyclic. Chem, 22, 1353 (1985).
- Compounds 4, 6, 7 and 15 are described in the article A. Dunn, R. Norrie; Synthesis of pyrido-1,3-thiazines; Zeitschrift fur chemie 1988, vol 28, n° 6, p 212/214.
- Compound 14 is described in the article A. Monge, V. Martinez-Merino; Synthesis of 2-substituted 3-Oxoisothiazolo[5,4-b]pyridines; J. heterocyclic. Chem, 22, 1353 (1985).
- Compound 18 is described in WO-A-03/014062.
- Compound 27 is described in EP 298752.
- Compounds 2, 7, 12, 16, 21 and 27 are the most particularly preferred.
- The compounds of formula (I) and/or (I′) according to the invention are of quite particular use in the cosmetics field.
- The composition used according to the invention comprises a compound of formula (I) and/or (I′) as described above, in a physiologically acceptable medium.
- The compound (I) and/or (I′) can be present in the composition used according to the invention in an amount which can be between 0.01 and 10% by weight, preferably between 0.1 and 5% by weight, in particular from 0.5 to 3% by weight, relative to the total weight of the composition.
- The term “physiologically acceptable medium” is understood to mean a medium that is compatible with keratin materials of human beings, such as the skin of the body or of the face, the lips, the mucous membranes, the eyelashes, the nails, the scalp and/or the hair.
- The composition used according to the invention may thus comprise all the adjuvants which are commonly employed in the cosmetics field.
- Mention may in particular be made of water; organic solvents, in particular C2-C6 alcohols; oils, in particular hydrocarbon-based oils, silicone oils; waxes, pigments, fillers, dyes, surfactants, emulsifiers; cosmetic active agents, UV screens, polymers, thickeners, preservatives, fragrances, bactericides, odour absorbers and antioxidants.
- These optional cosmetic adjuvants may be present in the composition in a proportion of from 0.001 to 80% by weight, in particular 0.1 to 40% by weight, relative to the total weight of the composition. In any event, these adjuvants, and also the proportions thereof, will be chosen by those skilled in the art in such a way that the advantageous properties of the compounds according to the invention are not, or not substantially, impaired by the envisaged addition.
- As active agents, it will be advantageous to introduce into the composition used according to the invention at least one compound chosen from: desquamating agents; calmatives; organic or inorganic photoprotective agents, moisturizers; depigmenting or propigmenting agents; anti-glycation agents; NO-synthase inhibitors; agents for stimulating the synthesis of dermal or epidermal macromolecules and/or preventing degradation thereof; agents for stimulating fibroblast and/or keratinocyte proliferation or stimulating keratinocyte differentiation; muscle relaxants and/or dermo-decontracting agents; tensioning agents; anti-pollution agents and/or free-radical scavengers; agents that act on the microcirculation; agents that act on the energy metabolism of cells; and mixtures thereof.
- Examples of such additional compounds are: retinol and derivatives thereof such as io retinyl palm itate; ascorbic acid and derivatives thereof such as magnesium ascorbyl phosphate and ascorbyl glucoside; tocopherol and derivatives thereof such as tocopheryl acetate; nicotinic acid and precursors thereof such as nicotinamide; ubiquinone; glutathione and precursors thereof such as L-2-oxothiazolidine-4-carboxylic acid; plant extracts and in particular plant proteins and hydrolysates thereof, and also plant hormones; marine extracts such as algal extracts; bacterial extracts; sapogenins such as diosgenin and wild yam extracts containing same; ceramides; hydroxy acids such as salicylic acid and 5-n-octanoylsalicylic acid; resveratrol; oligopeptides and pseudodipeptides and acyl derivatives thereof; manganese salts and magnesium salts, in particular the gluconates; and mixtures thereof.
- The term “desquamating agent” is intended to mean any compound capable of acting:
-
- either directly on desquamation by promoting exfoliation, such as β-hydroxy acids, in particular salicylic acid and derivatives thereof (including 5-n-octanoylsalicylic acid); α-hydroxy acids, such as glycolic acid, citric acid, lactic acid, tartaric acid, malic acid or mandelic acid; urea; gentisic acid; oligofucoses; cinnamic acid; Saphora japonica extract; resveratrol;
- or on the enzymes involved in the desquamation or degradation of corneodesmosomes, glycosidases, stratum corneum chymotryptic enzyme (SCCE) or even other proteases (trypsin, chymotrypsin-like). Mention ay be made of agents for chelating mineral salts: EDTA; N-acyl-N,N′,N′-ethylenediaminetriacetic acid; am inosulphonic compounds and in particular (N-2 hydroxyethylpiperazine-N-2-ethane)sulphonic acid (HEPES); derivatives of 2-oxothiazolidine-4-carboxylic acid (procysteine); derivatives of alpha-amino acids of glycine type (as described in EP-0 852 949, and also sodium methyl glycine diacetate sold by BASF under the trade name Trilon M); honey; sugar derivatives such as O-octanoyl-6-D-maltose and N-acetylglucosamine.
- The desquamating agents are generally present in the composition according to the invention in proportions ranging from 0.01 to 15% by weight, preferably ranging from 0.1 to 10% by weight, relative to the total weight of the composition.
- As calmatives that can be used in the composition according to the invention, mention may be made of: pentacyclic triterpenes and extracts of plants (for example Glycyrrhiza glabra) containing them, for instance β-glycyrrhetinic acid and salts and/or derivatives thereof (glycyrrhetinic acid monoglucuronide, stearyl glycyrrhetinate, 3-stearoyloxyglycyrrhetic acid), ursolic acid and salts thereof, oleanolic acid and salts thereof, betulinic acid and salts thereof, an extract of Paeonia suffruticosa and/or lactiflora, salicylic acid salts and in particular zinc salicylate, phycosaccharides from the company Codif, an extract of Laminaria saccharina, canola oil, bisabolol and camomile extracts, allantoin, Sepivital EPC (phosphoric diester of vitamin E and C) from SEPPIC, omega-3 unsaturated oils such as musk rose oil, blackcurrant oil, ecchium oil, fish oil, plankton extracts, capryloylglycine, Seppicalm VG (sodium palmitoylproline and Nymphea alba) from SEPPIC, an extract of Pygeum, an extract of Boswellia serrata, an extract of Centipeda cunnighami, an extract of Helianthus annuus, an extract of Linum usitatissimum, tocotrienols, extracts of Cola nitida, piperonal, an extract of clove, an extract of Epilobium angustifolium, aloe vera, an extract of Bacopa moniera, phytosterols, cortisone, hydrocortisone, indomethacin and betamethasone.
- The calmatives are generally present in the composition used according to the invention in proportions ranging from 0.01 to 15% by weight, preferably ranging from 0.1 to 10% by weight, relative to the total weight of the composition.
- The organic photoprotective agents are in particular chosen from anthranilates; cinnamic derivatives; dibenzoylmethane derivatives; salicylic derivatives, camphor derivatives; triazine derivatives such as those described in patent applications U.S. Pat. No. 4,367,390, EP863145, EP517104, EP570838, EP796851, EP775698, EP878469, EP933376, EP507691, EP507692, EP790243 and EP944624; benzophenone derivatives; β,β-diphenylacrylate derivatives; benzotriazole derivatives;
- benzalmalonate derivatives; benzimidazole derivatives; imidazolines; bis-benzoazolyl derivatives as described in patents EP669323 and U.S. Pat. No. 2,463,264; p-aminobenzoic acid (PABA) derivatives; methylenebis(hydroxyphenylbenzotriazole) derivatives as described in applications U.S. Pat. Nos. 5,237,071, 5,166,355, GB2303549, DE19726184 and EP893119; screening polymers and screening silicones such as those described in particular in application WO-93/04665; and α-alkylstyrene-derived dimers such as those described in patent application DE 19855649.
- The inorganic photoprotective agents can in particular be chosen from coated or uncoated metal oxide pigments or nanopigments (average size of the primary particles generally between 5 nm and 100 nm, preferably between 10 nm and 50 nm), for instance nanopigments of titanium oxide (amorphous or crystallized in rutile and/or anatase form), of iron oxide, of zinc oxide, of zirconium oxide or cerium oxide, which are all well-known UV photoprotective agents. Conventional coating agents are, moreover, alumina and/or aluminium stearate. Such coated or uncoated metal oxide nanopigments are in particular described in patent applications EP518772 and EP518773.
- The photoprotective agents are generally present in the composition used according to the invention in proportions ranging from 0.1 to 20% by weight, preferably ranging from 0.2 to 15% by weight, relative to the total weight of the composition.
- The composition used according to the invention may be in any of the galenical forms normally used in the cosmetics field, and in particular in the form of an optionally gelled aqueous or aqueous-alcoholic solution, a dispersion, optionally a two-phase dispersion, of the lotion type, an oil-in-water or water-in-oil or multiple (W/O/W or O/W/O) emulsion, an aqueous gel, a dispersion of oil in an aqueous phase by means of spherules, it being possible for these spherules to be polymeric nanoparticles such as nanospheres and nanocapsules or, better still, lipid vesicles of ionic and/or nonionic type; or aqueous or oily gels. These compositions are prepared according to the usual methods. According to this invention, a composition in the form of an emulsion, in particular an oil-in-water emulsion, is preferably used.
- The composition used according to the invention may constitute a skincare composition, and in particular a cleansing, protecting, treatment or care cream for the face, for the hands, for the feet, for the major anatomical folds or for the body (for example, day creams, night creams, makeup-removing creams, foundation creams, antisun creams); a fluid foundation, a makeup-removing milk, a protective or care body milk or an antisun milk; a skincare lotion, gel or foam, such as a cleansing lotion.
- The invention is illustrated in greater detail by the following nonlimiting examples.
- A biological test demonstrated the depigmenting activity of 7 compounds of formula (I) (compounds 2, 7, 12, 16, 19, 21 and 27).
- The modulatory effect of each compound on melanogenesis was measured according to the method described in FR-A-2734825 and also in the article by R. Schmidt, P. Krien and M. Régnier, Anal. Bichem., 235(2), 113-18,1996. This test is carried out on a coculture of keratinocytes and melanocytes.
- For the compounds tested, the following were determined:
-
- the cytotoxicity, by estimating leucine incorporation,
- the inhibitory activity on melanin synthesis, by estimating the ratio of thiouracil incorporation to leucine incorporation, relative to 100% of the control (the control corresponds to the test carried out without test compound). The IC50 values (concentration for which 50% of the melanin synthesis is inhibited) were determined.
- The test was also carried out with arbutin, niacinamide and kojic acid, which are known depigmenting compounds.
- The results are collated in the following table:
-
Cytotoxicity on Compound coculture IC50 Arbutin Non-cytotoxic Not attained (or greater than 500 μM) Kojic acid 100 μM Not attained (or greater than 500 μM) Niacinamide Non-cytotoxic Not attained Non-cytotoxic 4.9 μM Non-cytotoxic 37 μM 100 μM 25 μM Non-cytotoxic 32 μM Non-cytotoxic 29 μM Non-cytotoxic 410 μM Non-cytotoxic 128 μM - Compounds 2, 7, 12, 16, 19, 21 and 27 therefore demonstrate their efficacy in inhibiting melanogenesis and are, moreover, more effective than arbutin, kojic acid and niacinamide.
- Compound 2 is the most effective compound.
- A depigmenting gel for the skin is prepared, comprising (% by weight):
-
Compound 2 2% Carbomer (Carbopol 981 from Lubrizol) 1% preservative qs water qs 100% - When applied to the skin, the composition makes it possible to fade out brown marks.
- A similar composition is prepared with compound 3 or compound 11 or compound 16.
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US17/340,594 US20210401709A1 (en) | 2010-12-14 | 2021-06-07 | Process for depigmenting keratin materials using thiopyridinone compounds |
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FR1060474A FR2968661B1 (en) | 2010-12-14 | 2010-12-14 | PROCESS FOR DEPIGMENTING KERATINIC MATERIALS USING THIOPYRIDINONE COMPOUNDS |
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US201061425258P | 2010-12-21 | 2010-12-21 | |
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US201313994457A | 2013-08-08 | 2013-08-08 | |
US14/804,531 US11052028B2 (en) | 2010-12-14 | 2015-07-21 | Process for depigmenting keratin materials using thiopyridinone compounds |
US17/340,594 US20210401709A1 (en) | 2010-12-14 | 2021-06-07 | Process for depigmenting keratin materials using thiopyridinone compounds |
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FR3073145B1 (en) * | 2017-11-06 | 2020-05-22 | L'oreal | PROCESS FOR THE TREATMENT OF KERATINIC MATERIALS FROM DERIVATIVES OF ACIDIC C-GLYCOSIDES, ESTERS OR AMIDES, AND THE COSMETIC COMPOSITION CONTAINING THEM |
FR3073144B1 (en) * | 2017-11-06 | 2020-01-10 | L'oreal | PROCESS FOR THE TREATMENT OF KERATINIC MATERIALS FROM AMIDE C-GLYCOSIDE DERIVATIVES, AND THE COSMETIC COMPOSITION CONTAINING THEM |
FR3115207B1 (en) | 2020-10-15 | 2022-10-07 | Oreal | Use of thiopyridinone compounds to prevent the formation of cutaneous blackheads |
EP4267098A1 (en) * | 2020-12-22 | 2023-11-01 | L'oreal | Stabilization of thiopyridinone compound and yellowing reduction of composition comprising same |
FR3118871B1 (en) * | 2021-01-19 | 2024-03-01 | Oreal | stabilization of a thiopyridinone compound in a W/O type composition |
US20240065960A1 (en) * | 2020-12-22 | 2024-02-29 | L'oreal | Stabilization of thiopyridinone compound in w/o composition |
FR3118877B1 (en) * | 2021-01-18 | 2023-11-17 | Oreal | STABILIZATION OF A THIOPYRIDINONE COMPOUND AND REDUCTION OF YELLOWING OF THE COMPOSITION COMPRISING SAME |
WO2023245459A1 (en) * | 2022-06-21 | 2023-12-28 | L'oreal | Anti-oxidizing composition comprising a thiopyridinone compound |
WO2023248248A1 (en) * | 2022-06-21 | 2023-12-28 | L'oréal | Solubilization of thiopyridinone compound and composition comprising same |
WO2023249912A1 (en) | 2022-06-21 | 2023-12-28 | L'oreal | Cosmetic composition comprising hydrophilic antioxidants and thiopyridinone compounds |
WO2023248247A1 (en) * | 2022-06-21 | 2023-12-28 | L'oréal | Stabilization of thiopyridinone compound and composition comprising same |
JP2024000769A (en) * | 2022-06-21 | 2024-01-09 | ロレアル | Stabilization of thiopyridinone compound and composition comprising thiopyridinone compound |
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WO2023245462A1 (en) | 2022-06-21 | 2023-12-28 | L'oreal | Stabilized composition comprising thiopyridinone compound |
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FR2968661B1 (en) | 2016-01-01 |
WO2012080075A1 (en) | 2012-06-21 |
FR2968661A1 (en) | 2012-06-15 |
CN107411992A (en) | 2017-12-01 |
EP2651897A1 (en) | 2013-10-23 |
JP2014504289A (en) | 2014-02-20 |
EP2651897B1 (en) | 2020-04-01 |
JP2016074706A (en) | 2016-05-12 |
JP6158276B2 (en) | 2017-07-05 |
JP5931909B2 (en) | 2016-06-08 |
CN103228630A (en) | 2013-07-31 |
CN116672278A (en) | 2023-09-01 |
US11052028B2 (en) | 2021-07-06 |
US20130315847A1 (en) | 2013-11-28 |
US20160045420A1 (en) | 2016-02-18 |
US9138392B2 (en) | 2015-09-22 |
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