EP1239825A1 - Catecholoxime und ihre verwendung in kosmetischen und dermatologischen zubereitungen - Google Patents
Catecholoxime und ihre verwendung in kosmetischen und dermatologischen zubereitungenInfo
- Publication number
- EP1239825A1 EP1239825A1 EP00979656A EP00979656A EP1239825A1 EP 1239825 A1 EP1239825 A1 EP 1239825A1 EP 00979656 A EP00979656 A EP 00979656A EP 00979656 A EP00979656 A EP 00979656A EP 1239825 A1 EP1239825 A1 EP 1239825A1
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- EP
- European Patent Office
- Prior art keywords
- carbon atoms
- radical
- represents hydrogen
- optionally substituted
- butyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P39/00—General protective or antinoxious agents
- A61P39/06—Free radical scavengers or antioxidants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/52—Stabilizers
- A61K2800/522—Antioxidants; Radical scavengers
Definitions
- the invention relates to cosmetic and dermatological preparations, some of which contain new catecholoximes.
- the invention further relates to the use of these partially new catecholoximes in cosmetic and / or dermatological preparations.
- the invention also relates to the use of these preparations for protecting cells and tissues of mammals from the harmful effects of radicals and reactive oxygen compounds which accelerate aging.
- active substances are sought which support the natural defense mechanisms against free radicals and reactive oxygen compounds in physiological systems, in particular in or on the skin, the nails or hair of mammals, or as protective substances in cosmetics, pharmaceuticals or foods thereof Protect components sensitive to oxidation from autoxidation.
- Antioxidants are substances that, in small concentrations compared to the oxidizable substrate, significantly delay or completely prevent oxidation. Many antioxidants simultaneously act as radical scavengers and / or as complexing agents for heavy metal ions.
- R 1 represents hydrogen, lower alkyl or the group -OR, in which R represents hydrogen or lower alkyl
- R represents hydrogen, an alkyl radical with 1 to 22 carbon atoms or an alkenyl radical with 2 to 22 carbon atoms,
- R is hydrogen, an optionally substituted alkyl radical with 1 to 22 carbon atoms, an optionally substituted alkenyl radical with 2 to 22 carbon atoms, an optionally substituted aryl or arylalkyl radical with 6 to 12 carbon atoms or an optionally substituted
- the cosmetic and / or dermatological preparations according to the invention support the natural defense mechanisms against free radicals and reactive oxygen compounds in physiological systems, for example the skin, hair or nails, and protect their oxidation-sensitive components in cosmetics, pharmaceuticals or foods from autoxidation or photooxidation.
- the catecholoximes according to the invention are very good free radical scavengers and particularly strong antioxidants. They are preferably suitable as antioxidants for lipids.
- the catecholoximes according to the invention are able to suppress the harmful effects of free radicals and / or oxidative processes which are induced by UV light on and / or in human skin and to support the natural antioxidative processes.
- Lower alkyl in the catecholoximes according to the invention generally represents a short-chain saturated, straight-chain, cyclic or branched hydrocarbon radical with preferably 1 to 4 carbon atoms.
- the following may be mentioned in detail: methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, cyclopropylmethyl or the various isomers of the methylcyclopropyl radical.
- Methyl and ethyl are particularly preferred.
- Alkyl having 1 to 22 carbon atoms generally represents a saturated, straight-chain, cyclic or branched hydrocarbon radical.
- the radical preferably contains 1 to 10 carbon atoms.
- the following may be mentioned in detail: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec.-butyl, isobutyl, tert.-butyl, the various different straight-chain or branched isomers of pentyl, hexyl, heptyl, octyl, , Nonyl and decyl radicals, cyclopentyl, cyclopentylmethyl, cyclopentylethyl, cyclopentylpropyl, the various isomers of methylcyclopentyl radical, cyclohexyl, cycloheptyl, cyclooctyl, menthyl, isomenthyl, homomenthyl, norb
- Methyl, ethyl, n-propyl, isopropyl, cyclopropyl, n- are particularly preferred. Butyl, sec-butyl, isobutyl, tert-butyl, cyclopentyl, cyclohexyl, menthyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl and n-decyl.
- Alkenyl with 2 to 22 carbon atoms generally represents an unsaturated straight-chain, cyclic or branched hydrocarbon radical.
- the radical preferably contains 2 to 10 carbon atoms.
- the following may be mentioned in detail: ethenyl, 1- or 2-propenyl, 1-, 2- or 3-butenyl, 2-methyl-1-propenyl, 2-methyl-2-propenyl, 1,3-butadienyl, 1,3- Pentadienyl, 1, 4-pentenyl, 2,4-pentenyl, the various different straight-chain, cyclic or branched isomers of the pentenyl, hexenyl, heptenyl, octenyl, nonenyl and decenyl radical.
- Ethenyl 1- or 2-propenyl, 1-, 2- or 3-butenyl, 2-methyl-1-propenyl, 2-methyl-2-propenyl, 3-methyl-1-pentenyl, 3-methyl-2-pentenyl , 3-methyl-3-pentenyl, cyclopentenyl, cyclohexenyl, pinenyl, norbornenyl and bornenyl.
- Aryl having 6 to 12 carbon atoms is generally aromatic
- Phenyl and naphthyl are preferred. Phenyl is particularly preferred.
- Arylalkyl having 6 to 12 carbon atoms generally represents an aryl-substituted alkyl radical.
- Arylalkyl radicals having a total of 7 to 12 carbon atoms are preferred.
- Phenylmethyl, 1- or 2-phenylethyl, 1-, 2- or 3-phenylpropyl, 2-phenyl-2-methylethyl, 1-, 2-, 3- or 4-phenylbutyl, naphthylmethyl, 1- or 2 are particularly preferred -Naphytlethyl. Phenylmethyl, 1- or 2-phenylethyl are particularly preferred.
- a heterocycle with 2 to 12 carbon atoms and at least one atom from the group consisting of oxygen, sulfur or nitrogen in the ring generally consists of 1 to 3, preferably 1 or 2 rings.
- the heterocycle preferably contains 1 to 3, preferably 1 or 2 heteroatoms.
- a heteroalkyl radical having 2 to 12 carbon atoms generally represents an alkyl radical substituted by a heterocyclyl radical.
- the alkyl radical preferably consists of 1 to 4 carbon atoms, particularly preferably 1 or 2 carbon atoms. Particular mention may be made of 2-, 3- or 4-pyridylimethyl or ethyl, 2-, 3- or 4-tetrahydropyranylmethyl or ethyl, 2- or 3-furanylmethyl or ethyl,
- Substituents of the radicals mentioned can preferably be hydrogen atoms, lower alkyl, hydroxy, lower alkyloxy, thio, lower alkylthio, amino, lower alkylamino, di (lower alkyl) amino, nitro, iodine, bromine, fluorine, Chlorine, azido, thio-cyanato, isothiocyanato, cyanato, isocyanato, nitrile, isonitrile, phosphate, lower alkyl phosphate, di (lower alkyl) phosphate, sulfonic acid, lower alkyl sulfonate,
- Hydrogen atoms, lower alkyl, hydroxy, lower alkyloxy, amino, di (lower alkyl) amino, chlorine, nitrile, sulfonic acid, sulfaonamide or lower alkyl sulfonate residues are particularly preferred.
- the radicals can contain 1 to 10, preferably 1 to 5, particularly preferably 1 to 2, substituents.
- R 1 represents hydrogen, methyl, tert-butyl, hydroxy or methoxy
- R 2 represents hydrogen, an alkyl radical having 1 to 10 carbon atoms or an alkenyl radical having 2 to 10 carbon atoms.
- R represents hydrogen, an optionally substituted alkyl radical with 1 to 10 carbon atoms, an optionally substituted alkenyl radical with 2 to 10 carbon atoms or an optionally substituted aryl or arylalkyl radical with 6 to 12 carbon atoms,
- R represents hydrogen, hydroxy or methoxy
- R 2 represents hydrogen, methyl, ethyl, ethenyl, isopropyl, propyl, tert-butyl, isobutyl or n-butyl,
- R 3 is hydrogen, methyl, ethyl, ethenyl, isopropyl, propyl, tert-butyl, isobutyl, n-butyl, n-pentyl, isopentyl, prenyl, neopentyl, cyclopentyl, cyclohexyl, pentylmethyl, n-hexyl, n-heptyl, n Represents octyl, 2-ethylhexyl, n-nonyl, n-decyl, benzyl, 4-methylbenzyl, phenyl or 4-methylphenyl group,
- the invention also relates to the use of the catecholoximes of the formula
- R 1 represents hydrogen, lower alkyl or the group -OR 4 , in which R 4 represents hydrogen or lower alkyl,
- R represents hydrogen, an alkyl radical with 1 to 22 carbon atoms or an alkenyl radical with 2 to 22 carbon atoms,
- R is hydrogen, an optionally substituted alkyl radical with 1 to 22 carbon atoms, an optionally substituted alkenyl radical with 2 to 22 carbon atoms, an optionally substituted aryl or arylalkyl radical with 6 to 12 carbon atoms or an optionally substituted heterocyclic or heterocyclylalkyl radical with 2 to 12 carbon atoms and represents at least one atom from the group consisting of oxygen, sulfur or nitrogen,
- catecholoximes including their stereoisomers or their mixtures in cosmetic and / or dermatological preparations.
- Some of the catecholoximes according to the invention are known.
- R 1 represents hydrogen, lower alkyl or the group -OR 4 , in which R 4 represents hydrogen or lower alkyl,
- R represents hydrogen, an alkyl radical with 1 to 22 carbon atoms or an alkenyl radical with 2 to 22 carbon atoms,
- R represents an alkyl radical with 1 to 22 carbon atoms, an alkenyl radical with 2 to 22 carbon atoms, an optionally substituted aryl or arylalkyl radical with 6 to 12 carbon atoms, including their stereoisomers or their mixtures are new.
- R represents hydrogen, methyl, tert-butyl, hydroxy or methoxy
- R 2 represents hydrogen, an alkyl radical with 1 to 10 carbon atoms or an alkenyl radical with 2 to 10 carbon atoms,
- R represents an alkyl radical with 1 to 10 carbon atoms, a substituted one with 2 to 10 carbon atoms or an optionally substituted aryl or arylalkyl radical with 6 to 12 carbon atoms,
- New catecholoximes of the formula are particularly preferred
- R 1 represents hydrogen, hydroxy or methoxy
- R 2 represents hydrogen, methyl, ethyl, ethenyl, isopropyl, propyl, tert-butyl, isobutyl or n-butyl,
- R 3 is methyl, ethyl, ethenyl, isopropyl, propyl, tert-butyl, isobutyl, n-butyl, n-pentyl, isopentyl, prenyl, neopentyl, cyclopentyl, cyclohexyl, pentylmethyl, n-hexyl, n-heptyl, n-octyl Represents 2-ethylhexyl, n-nonyl, n-decyl, benzyl, 4-methylbenzyl, phenyl or 4-methylphenyl group,
- the individual compounds for the new catecholoximes are, for example, 3,4-dihydroxybenzaldehyde-O-ethyloxime
- the preparations according to the invention can preferably be used in cosmetic or dermatological preparations for protecting cells and tissues of mammals, in particular humans, against the harmful influence of free radicals and reactive oxygen species.
- the preparations according to the invention can of course also be used analogously in other fields of use.
- the amount of catecholoximes in the cosmetic or dermatological preparations according to the invention is 0.001% by weight to 30% by weight, preferably 0.001 to 20% by weight, particularly preferably 0.01% by weight to 5% by weight on the total weight of the preparation.
- the preparation of the catecholoximes according to the invention is known per se (cf. Chem. Ber. 1922, 55, pages 920-929, in Chem. Ber. 1922, 55, pages 2357-2372 and Liebigs Ann. 1936, 526, pages 277-294 ) and can by reacting the corresponding aromatic carbonyl compound with hydroxylamines of the formula
- a solvent for example water, an aliphatic monohydric or polyhydric alcohol having 1 to 4 carbon atoms (such as, for example, methanol, ethanol, ethylene glycol,
- the catechol oximes according to the invention obtained in this way
- R 1 , R 2 and R 3 have the meaning given above.
- 3,4-Dihydroxybenzaldehyde, 3,4,5-trihydroxybenzaldehyde or 3,4-dihydroxyacetophenone are preferably used as aromatic carbonyl compounds.
- hydroxylamines hydroxylamine, O-ethylhydroxylamine or O- (4-methylbenzyl) hydroxylamine or the salts of the hydroxylamines mentioned are preferably used.
- the cosmetic and dermatological preparations according to the invention contain the catecholoximes in an effective amount, in addition to other, otherwise conventional components of the composition. They contain 0.001% by weight to 30% by weight, preferably 0.001 to 20% by weight, but in particular 0.01% by weight to 5% by weight, based on the total weight of the formulation, of the catecholoximes general formula I and can be used as “water in oil”, “oil in water”, “water in oil in water” or “oil in water in oil” emulsions, as microemulsions, as gels, as solutions, for example in Oils, alcohols or silicone oils, as pens, as soaps, as aerosols, sprays or even foams.
- the formulations can contain water in an amount of up to 99.99% by weight, preferably 5-80% by weight, based on the total weight of the formulation.
- the catecholoximes according to the invention can also be prepared beforehand in liposomes, for example starting from phosphatidylcholine, in microspheres, in nanospheres or else in capsules from a suitable matrix, for example from natural or synthetic waxes or from gelatin, for producing the cosmetic and dermatological preparations according to the invention. be incorporated.
- the cosmetic and dermatological preparations according to the invention are applied to the skin and / or the hair in a sufficient amount in the manner customary for cosmetics.
- the cosmetic and dermatological preparations according to the invention can contain cosmetic auxiliaries and additives, as are usually used in such preparations, e.g. Sunscreens (e.g. organic or inorganic light filter substances, preferably micropigments), preservatives, bactericides, fungicides, virucides, cooling agents, plant extracts, anti-inflammatory agents, substances that accelerate wound healing (e.g. chitin or chitosan and its derivatives), film-forming substances (e.g. polyvinyl pyrrolidones or choline or its derivatives), common antioxidants, vitamins (eg vitamin C and derivatives, tocopherols and derivatives, vitamin A and
- Sunscreens e.g. organic or inorganic light filter substances, preferably micropigments
- preservatives bactericides, fungicides, virucides
- cooling agents e.g. chitin or chitosan and its derivatives
- film-forming substances e.g. polyvinyl pyr
- 2-hydroxycarboxylic acids e.g. citric acid, malic acid, L-, D-, or dl-lactic acid
- skin lightening agents e.g. kojic acid, hydroquinone or arbutin
- skin colorants e.g. walnut extracts or dihydroxyacetone
- perfumes substances to prevent foaming, Dyes, pigments that have a coloring effect, thickeners, surface-active substances, emulsifiers, softening, moisturizing and / or moisturizing substances (e.g. glycerol or urea), fats, oils, unsaturated fatty acids or their derivatives (e.g.
- linoleic acid ⁇ -linolenic acid, ⁇ Linolenic acid or arachidonic acid and their respective natural or synthetic esters
- waxes or other customary constituents of a cosmetic or dermatological formulation such as alcohols, polyols, Polymers, foam stabilizers, electrolytes, organic solvents, silicone derivatives or chelating agents (e.g. ethylenediaminetetraacetic acid and derivatives).
- the cosmetic and dermatological preparations according to the invention can preferably additionally contain one or more of the catechol oximes according to the invention or else one or more other antioxidants.
- all antioxidants suitable or customary for cosmetic and / or dermatological applications can be used as other antioxidants.
- the antioxidants are advantageously selected from the group consisting of amino acids (e.g. glycine, histidine, 3,4-dihydroxyphenylalanine, tyrosine, tryptophan) and their derivatives, imidazoles (e.g. urocanic acid) and their derivatives,
- Peptides D, L-carnosine, D-camosine, L-carnosine, anserine and their derivatives, carotenoids, carotenes (eg ⁇ -carotene, ⁇ -carotene, lycopene) and their derivatives, chlorogenic acid and its derivatives, lipoic acid and its derivatives , Aurothioglucose, propylthiouracil and other thiols (eg thioredoxin, glutathione, cysteine, cystine, cystamine and their glycosyl and N-acyl derivatives or their alkyl esters) as well as their salts, dilaurylthiodipropionate, distearylthiodipropionate, thiodiphenol and phenamic acid and their amide derivative and phenamine amide and phenamine amide derivatives and their derivatives (eg homovanillic acid, 3,4-dihydroxyphenylacetic acid, ferulic acid, sinapi
- vitamin E e.g. vitamin E acetate
- vitamin A and derivatives e.g. vitamin A palmitate
- rutin Acid and its derivatives flavonoids (e.g. quercetin, ⁇ -glucosylrutin) and their derivatives
- phenolic acids e.g. gallic acid, ferulic acid
- furfurylidene glucitol dibutyl hydroxytoluene
- butylated hydroxyanisol butylated hydroxyanisol
- Derivatives e.g. selenomethionine
- stilbenes and their derivatives e.g. stilbene oxide, resveratrol
- derivatives of these active substances which are suitable according to the invention.
- the amount of further antioxidants in the preparations according to the invention can generally be 0.001 to 30% by weight, preferably 0.001 to 20% by weight, particularly preferably 0.001 to 5% by weight, based on the total weight of the preparation.
- UV-A and / or UV-B filter substances can also be used in the cosmetic or dermatological preparations according to the invention, the total amount of filter substances being 0.1 to 30% by weight, preferably 0.5 to
- UV-A and / or UV-B filter substances which can be used are 3-benzylidene camphor derivatives (for example 3- (4-methylbenzylidene) -dl-camphor), aminobenzoic acid derivatives (for example 4- (N, N-dimethylamino) benzoic acid-2 -ethylhexyl ester or menthyl anthranilate), 4-methoxycinnamate (eg 2-ethylhexyl p-methoxycinnamate or isoamyl p-methoxycinnamate), benzophenones (eg 2-hydroxy-4-methoxybenzophenone), single or multiple sulfonated UV filters [eg 2-phenylbenzimidazole-5-sulfonic acid, sulisobenzone or 1,4-bis (benzimidazolyl) benzene-4,4
- polymer-bound UV filters e.g. polymer of N- [2- (or 4) - (2-oxo-3-bornylidene) methyl] benzylacrylamide
- pigments eg titanium dioxide, zirconium dioxide, iron oxides, silicon dioxide, manganese oxides, aluminum oxides, cerium oxides or zinc oxides
- the lipid phase in the cosmetic and / or dermatological preparations according to the invention can advantageously be selected from the following groups of substances: mineral oils (advantageously paraffin oil), mineral waxes, hydrocarbons (advantageously squalane or squalene), synthetic or semisynthetic triglyceride oils (for example triglycerides of capric or caprylic acid) , natural oils (e.g.
- Castor oil olive oil, sunflower oil, soybean oil, peanut oil, rapeseed oil, almond oil, palm oil, coconut oil, palm kernel oil, borage seed oil and the like), natural ester oils (e.g. jojoba oil), synthetic ester oils (preferably esters of saturated and / or unsaturated, linear and / or branched Alkane carboxylic acids of 3 to 30 carbon atoms with saturated and / or unsaturated, linear and / or branched
- alkyl benzoates e.g. mixtures of n-dodecyl, n-tridecyl, n-tetradecyl and n-pentadecyl benzoate
- cyclic or linear silicone oils such as dimethylpolysiloxanes, diethylpolysiloxanes, diphenylpolysiloxanes and mixed forms thereof.
- the aqueous phase of the cosmetic and / or dermatological invention is aqueous phase of the cosmetic and / or dermatological invention.
- Preparations optionally advantageously contain alcohols, diols or polyols of low C number, and their ethers, preferably ethanol, isopropanol, propylene glycol, glycerol, ethylene glycol, ethylene glycol monoethyl or monobutyl ether, propylene glycol monomethyl ether, monoethyl or monobutyl ether, diethylene glycol monomethyl - Or monoethyl ether and analog products, furthermore alcohols with a low C number, for example Ethanol, isopropanol, 1,2-propanediol, glycerol, furthermore ⁇ - or ⁇ -hydroxy acids, preferably lactic acid, citric acid or slaicylic acid, in addition emulsifiers, which can advantageously be selected from the group of ionic, nonionic, polymeric, phosphate-containing and zwitterionic emulsifiers, and in particular one or more thickeners which can advantageously be selected from
- Hyaluronic acid, guar gum, xanthan gum, hydroxypropylmethyl cellulose or allulose derivatives particularly advantageously from the group of polyacrylates, preferably a polyacrylate from the group of so-called carbopoles, in each case individually or in
- cosmetic or dermatological preparations for protecting tissues and cells of mammals, in particular the skin, hair and / or nails of humans, from oxidative stress and the harmful influence of radicals.
- the present invention also includes a method for protecting cosmetic or dermatological preparations against oxidation or photooxidation, these preparations being e.g. for preparations for treatment, for
- Protection and care of the skin, nails or hair or also make-up can act products, the components of which cause stability problems due to oxidation or photooxidation during storage, characterized in that the cosmetic or dermatological preparations have an effective content of catecholoximes according to the invention.
- Example 2 "Oil in water” emulsion with 3,4-dihydroxybenzaldoxime
- Part A was mixed and heated to 80 ° C.
- Part B was mixed and heated to 90 ° C and added to Part A with stirring.
- Carbopol was carefully dispersed in water and neutralized with sodium hydroxide solution (pH 6.5).
- Part C was then added to the mixture of parts A and B at 60 ° C.
- Part D was added to the mixture of parts A, B, and C at room temperature.
- Example 3 "Oil in water" emulsion with 3,4-dihydroxyacetophenone oxime
- a Arlatone 983 S ® (ICI) with glyceryl monostearate 1,2 3,6,9,12,15,18,21,24,27,30,33,
- Cutina MD ® (Henkel) glyceryl monostearate 3.5
- Baysilone oil MIO ® (GE Bayer) polydimethylsiloxane 0.8
- Phenopip (Nipa laboratories) ethyl ester and 4-hydroxy-0.5-benzoic acid propyl ester and 4-hydroxybenzoic acid butyl ester
- Carbopol 2050 ® (BF Goodrich) cross-linked acrylic acid / o- o-
- Part A was mixed and heated to 80 ° C.
- Part B was mixed and heated to 90 ° C and added to Part A with stirring.
- Carbopol was carefully dispersed in water and neutralized with sodium hydroxide solution (pH 6.5).
- Part C was then added to the mixture of parts A and B at 60 ° C.
- Part D was added to the mixture of parts A, B, and C at room temperature.
- Example 4 "Water in oil" sunscreen emulsion with UVA / B broadband protection and 3,4-dihydroxybenzaldoxime
- part A all substances except the zinc oxide were heated to 85 ° C. and the zinc oxide was carefully dispersed in the mixture.
- the components of Part B were mixed, heated to 85 ° C and added to Part A with stirring.
- Part C was added to the mixture of parts A and B and then the mixture was homogenized using a dispersing tool.
- Example 5 "Oil in water” sunscreen emulsion with UVA / B broadband protection and 3,4-dihydroxybenzaldehyde oxime
- Part A all substances were mixed except for the titanium dioxide and heated to 85 ° C; the titanium dioxide was carefully dispersed into the mixture.
- part B except for Veegum and Natrosol, all substances were mixed, heated to 90 ° C., Natrosol and Veegum were dispersed in, and the mixture was added to Part A while stirring.
- Part C was added to the mixture of parts A and B and then the mixture was homogenized (pH 5.6) using a dispersing tool.
- Example 6 Oil in water” sunscreen emulsion with UVA / B broadband protection and 3,4-dihydroxybenzaldehyde oxime
- Part A was heated to 85 ° C.
- Part B Carbopol and Keltrol were cold-dispersed in the remaining constituents, the mixture was heated to 85 ° C. and added to Part A.
- Part C was immediately added to the mixture of parts A and B at 80 ° C. and homogenized for 5 minutes using a dispersing tool.
- Part D was finally added at room temperature and the mixture was homogenized (pH 6.6) using a dispersing tool.
- the carbonyl compound (87 mmol) was dissolved in 45 ml of water at 40 ° C.
- a solution of the corresponding hydroxylamine hydrochloride (90 mmol) and of sodium acetate (87 mmol) in 25 ml of water was added and the reaction mixture was stirred at about 80 ° C. for 2 hours under nitrogen.
- the mixture was extracted with 200 ml of tert-butyl methyl ether, the organic phase was washed with saturated sodium chloride solution, dried over sodium sulfate, filtered off and the filtrate was evaporated to dryness in vacuo.
- the crystalline residue was optionally recrystallized.
- Radical scavenger was compared with the conventional radical scavenger and 2 examples from WO 95 01,157.
- the DPPH (l, l-diphenyl-2-picryl-hydrazyl) test was used to remove radicals.
- DPPH DPPH was dissolved in methanol to a concentration of 100 ⁇ mol / 1.
- a number of dilutions of the exemplary compounds, vitamin C, ⁇ -tocopherol and dibutylhydroxytoluene were made in methanol.
- Methanol served as a control.
- 2500 ⁇ l of the DPPH solution were mixed with 500 ⁇ l of each test solution and the decrease in absorption at 515 nm was read until the decrease was less than 2% per hour.
- the activity of the test substances as radical scavengers was calculated according to the following equation:
- Active, as radical scavenger (%) 100 - (absorption of test compounds) / (absorption of control) x 100.
- Vitamin C 0.270 ⁇ -tocopherol 0.250
- the exemplary compounds, vitamin C, ⁇ -tocopherol and dibutylhydroxy-toluene were dissolved in methanol or acetone and 100 ⁇ l of the respective test solution was added to a prepared oil sample of 3 g. Only solvent was added to a control sample. A constant, dry air flow (20 l / h) was blown through the heated oil sample containing the test solution and the volatile oxidation products (mainly short-chain fatty acids such as ants or acetic acid) collected in a template with water. The conductivity of this aqueous solution was continuously measured and documented. The oxidation of (unsaturated) fats is very slow for a while and then suddenly increases sharply. The time to rise is called the induction period (IP).
- IP induction period
- the antioxidative index (AOI) was obtained according to the following equation:
- Salicylaldoxime 1.1 o-hydroxyacetophenone oxime 0.9
- Vitamin C 0.7 ⁇ -tocopherol 39
- a dose of 2 mg / cm 2 of the preparation from Example 1 was applied to the back skin twice a day for 12 test persons. Before the following irradiation, a 0.2% ethanolic solution was applied to a control area (2 mg / cm). The 2 treated and one untreated area were irradiated with ultraviolet light (320 to 400 nm, 10 joules / cm 2 ). The respective test areas were treated with 4 ml of ethanol for 2 min, the solutions were dried under nitrogen at room temperature and the residue was taken up in 1 ml of ethanol. The latter solutions were checked by HPLC for their squalene content (detection at
- squalene peroxide content was given relative to squalene in the form of picomol peroxide per ⁇ g of squalene.
- the inhibition based on the untreated area was as follows
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE19960105 | 1999-12-14 | ||
DE19960105A DE19960105A1 (de) | 1999-12-14 | 1999-12-14 | Catecholoxime und ihre Verwendung in kosmetischen und dermatologischen Zubereitungen |
PCT/EP2000/012111 WO2001043712A1 (de) | 1999-12-14 | 2000-12-01 | Catecholoxime und ihre verwendung in kosmetischen und dermatologischen zubereitungen |
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EP1239825A1 true EP1239825A1 (de) | 2002-09-18 |
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ID=7932508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00979656A Withdrawn EP1239825A1 (de) | 1999-12-14 | 2000-12-01 | Catecholoxime und ihre verwendung in kosmetischen und dermatologischen zubereitungen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20030049287A1 (de) |
EP (1) | EP1239825A1 (de) |
JP (1) | JP2003516953A (de) |
CN (1) | CN1409626A (de) |
AU (1) | AU1706701A (de) |
DE (1) | DE19960105A1 (de) |
WO (1) | WO2001043712A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2861069B1 (fr) | 2003-10-17 | 2005-12-09 | Galderma Res & Dev | NOUVEAUX LIGANDS ACTIVATEURS DES RECEPTEURS RARs, UTILISATION EN MEDECINE HUMAINE AINSI QU'EN COSMETIQUE |
GB0617024D0 (en) * | 2006-08-30 | 2006-10-11 | Unilever Plc | Hair treatment compositions incorporating hair substantive polymers |
FR2919182B1 (fr) * | 2007-07-25 | 2009-11-13 | Trophos | Utilisation d'au moins un derive oxime du 3,5-seco-4-nor-cholestane comme antioxydants |
US20090187060A1 (en) * | 2008-01-22 | 2009-07-23 | E-Z-Em, Inc. | Method and Formulation for Neutralizing Toxic Chemicals and Materials |
CN105315385A (zh) * | 2014-07-30 | 2016-02-10 | 孟宪军 | 一种采用壳聚糖衍生物水凝胶为原料的伤口粘合剂 |
FR3081710A1 (fr) * | 2018-05-31 | 2019-12-06 | Bionuclei | Molecule enzymatique mimant une activite antioxydante |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR4899M (de) * | 1965-11-05 | 1967-03-13 | ||
BE754448A (fr) * | 1969-08-08 | 1971-02-05 | Choay Sa | Nouveaux medicaments a base d'imines substituees, nouvelles imines substituees et leurs procedes de fabrication |
JPS5657712A (en) * | 1979-10-15 | 1981-05-20 | Toyobo Co Ltd | Carcinostatic agent |
DK175069B1 (da) * | 1986-03-11 | 2004-05-24 | Hoffmann La Roche | Pyrocatecholderivater |
WO1995001157A1 (en) * | 1993-06-29 | 1995-01-12 | The Procter & Gamble Company | Use of hydroxyphenyl oximes as chelating photoprotectants |
FR2788694B1 (fr) * | 1999-01-27 | 2002-09-13 | Oreal | Composition pour application topique sur la peau et/ou ses phaneres comprenant au moins un compose comportant un fragment phenyloxime |
AU4267500A (en) * | 1999-07-08 | 2001-01-11 | Haarmann & Reimer Gmbh | Topical cosmetic compositions comprising benzaldoximes |
-
1999
- 1999-12-14 DE DE19960105A patent/DE19960105A1/de not_active Withdrawn
-
2000
- 2000-12-01 US US10/149,495 patent/US20030049287A1/en not_active Abandoned
- 2000-12-01 CN CN00816950A patent/CN1409626A/zh active Pending
- 2000-12-01 JP JP2001544652A patent/JP2003516953A/ja active Pending
- 2000-12-01 AU AU17067/01A patent/AU1706701A/en not_active Abandoned
- 2000-12-01 EP EP00979656A patent/EP1239825A1/de not_active Withdrawn
- 2000-12-01 WO PCT/EP2000/012111 patent/WO2001043712A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0143712A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1409626A (zh) | 2003-04-09 |
US20030049287A1 (en) | 2003-03-13 |
JP2003516953A (ja) | 2003-05-20 |
DE19960105A1 (de) | 2001-06-21 |
AU1706701A (en) | 2001-06-25 |
WO2001043712A1 (de) | 2001-06-21 |
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