WO2019230274A1 - 美白剤 - Google Patents
美白剤 Download PDFInfo
- Publication number
- WO2019230274A1 WO2019230274A1 PCT/JP2019/017350 JP2019017350W WO2019230274A1 WO 2019230274 A1 WO2019230274 A1 WO 2019230274A1 JP 2019017350 W JP2019017350 W JP 2019017350W WO 2019230274 A1 WO2019230274 A1 WO 2019230274A1
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- WO
- WIPO (PCT)
- Prior art keywords
- acid
- phenyl
- group
- skin
- whitening
- 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.)
- Ceased
Links
- XCJWWPWVWDYGAH-UHFFFAOYSA-N CCCCCC(OCCCc(cc1)ccc1C(C1CCC(CN)CC1)=O)=O Chemical compound CCCCCC(OCCCc(cc1)ccc1C(C1CCC(CN)CC1)=O)=O XCJWWPWVWDYGAH-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
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- 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
- A61K8/41—Amines
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- 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
- A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
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- 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
- A61K2800/42—Colour properties
- A61K2800/43—Pigments; Dyes
- A61K2800/434—Luminescent, Fluorescent; Optical brighteners; Photosensitizers
Definitions
- the present invention relates to a whitening agent having an excellent whitening effect.
- Ascorbic acid and hydroquinone have been known for a long time as a whitening agent for preventing or improving skin pigmentation, and external preparations containing these are widely used for preventing or improving skin pigmentation. Have been used.
- melanin production inhibitors melanin production inhibitors, tyrosinase inhibitors, tyrosinase gene expression inhibitors, ⁇ -MSH inhibitors, antioxidants, and melanocyte dendride elongation inhibitors
- whitening agents having an action mechanism different from that of conventional whitening agents such as melanosome delivery inhibitors of melanocytes to keratinocytes have been actively developed.
- Cetraxate or a salt thereof is one of the active ingredients of a whitening agent developed recently, and is a compound that is decomposed into tranexamic acid by metabolism (Patent Document 1). It is known that tranexamic acid has a prostaglandin E2 production inhibitory action that activates melanocytes and a tyrosinase inhibitory action, and has a whitening effect. It has been reported that cetraxate has a whitening effect due to the activity of the compound body in addition to a whitening effect due to its metabolite, tranexamic acid.
- the aminocarboxylic acid derivative described in Patent Document 2 has been confirmed to have an anti-ulcer action and has been proposed for use as a pharmaceutical product.
- the structure of the compound partially matches with tranexamic acid.
- JP 2008-110967 A Japanese Patent Publication No. 64-4508
- An object of the present invention is to provide a whitening agent having high safety and an excellent whitening action.
- one aspect of the present invention is a whitening agent containing a compound represented by the following general formula (1) or an acid addition salt thereof.
- X represents a C 1-2 alkylene group in which a hydrogen atom may be substituted with a methyl group
- Y represents COOR 1 or CH 2 OR 2
- R 1 has a hydrogen atom or a branched group.
- R 2 represents a hydrogen atom or an optionally substituted acyl group having 1 to 6 carbon atoms.
- Another aspect of the present invention is a skin whitening composition for whitening containing the whitening agent.
- the skin external composition is preferably a cosmetic.
- the present invention provides a whitening agent having an excellent whitening effect. Moreover, the skin external composition for whitening containing this whitening agent is also provided, and this is suitable as cosmetics.
- the whitening agent of the present invention contains a compound represented by the following general formula (1) or an acid addition salt thereof.
- X represents an alkylene group having 1 to 2 carbon atoms in which a hydrogen atom may be substituted with a methyl group.
- the alkylene group having 1 or 2 carbon atoms is a methylene group or an ethylene group.
- X is preferably —CH 2 —CH (CH 3 ) — or —CH 2 —CH 2 —.
- Y represents COOR 1 or CH 2 OR 2
- R 1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms which may have a branch
- R 2 represents a hydrogen atom or An acyl group having 1 to 6 carbon atoms which may have a branch is represented.
- R 1 when Y is COOR 1, when R 1 is a hydrogen atom Y is a carboxyl group, Y when the alkyl group R 1 is 1 carbon atoms which may have a branch 1-6 is an ester group.
- the alkyl group having 1 to 6 carbon atoms which may have a branch include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, an iso-butyl group, and a tert-butyl group. , N-pentyl group, n-hexyl group and the like. From the viewpoint of whitening action, R 1 is particularly preferably a hydrogen atom, and when R 1 is an alkyl group, the carbon number is more preferably smaller.
- Y when Y is CH 2 OR 2, Y when R 2 is a hydrogen atom is a hydroxy methyl group, Y when the acyl group R 2 is ⁇ carbon atoms 1 may have a branch 6 is an ester group It is.
- the acyl group having 1 to 6 carbon atoms which may have a branch include a formyl group, an acetyl group, an acryloyl group, a propionyl group, a propioyl group, a butyryl group, an isobutyryl group, a methacryloyl group, a valeryl group and a caproyl group. Is mentioned. From the viewpoint of whitening action, R 2 is particularly preferably a hydrogen atom, and when R 2 is an acyl group, the carbon number is more preferably smaller.
- the 1,4-cyclohexylene group may be either a chair type or a boat type. Further, the two bonds may be in a cis or trans relationship. Preferably, it is in the form of a chair and is in a trans relationship.
- Examples of the acid addition salt of the compound represented by the following general formula (1) include salts with inorganic acids, organic carboxylic acids, or organic sulfonic acids.
- inorganic acids include hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid
- organic carboxylic acids include acetic acid, propionic acid, maleic acid, fumaric acid, oxalic acid, citric acid, butyric acid, lactic acid
- Examples of the organic sulfonic acid include methanesulfonic acid, ethanesulfonic acid, benzenesulfonic acid, and paratoluenesulfonic acid.
- inorganic acid salts are preferred, and hydrochlorides are more preferred.
- an active ingredient of the whitening agent of the present invention either a compound represented by the general formula (1) or an acid addition salt thereof may be used, but an acid addition salt is more preferable.
- the compound represented by the general formula (1) can be obtained by synthesis and purification by a conventional method.
- it can be synthesized by an acylation reaction in the presence of Lewis acid of an acid addition salt of an aminocarboxylic acid halide described in Patent Document 2, and can be produced through an appropriate isolation / purification method.
- whitening refers to prevention and / or improvement of pigmentation, and more specifically, melanin production such as spots, dullness, freckles, sunburn, darkening due to skin inflammation and irritation, and excessive accumulation. And prevention and / or amelioration of pigmentation symptoms caused by abnormal deposition and the like, and pigmentation symptoms caused by diseases such as melanosis of the skin caused by drugs such as steroids.
- tyrosinase inhibitory action tyrosinase gene expression inhibitory action
- tyrosinase protein expression inhibitory action tyrosinase-related proteolytic action, etc. It is presumed that pigmentation is prevented and / or improved by tyrosinase activity inhibitory action, proton pump inhibitory action, melanocyte delivery inhibition action to keratinocytes, or a new mechanism of action.
- the present invention can also be referred to as a whitening method or a method for preventing and / or improving pigmentation, which includes applying a compound represented by the general formula (1) or an acid addition salt thereof.
- the present invention can also be referred to as the use of the compound represented by the general formula (1) or an acid addition salt thereof for whitening or prevention and / or improvement of pigmentation.
- the present invention can be said to be the use of a compound represented by the general formula (1) or an acid addition salt thereof in the production of a whitening agent.
- the present invention can also be referred to as a compound represented by the general formula (1) or an acid addition salt thereof used for the prevention and / or improvement of whitening or pigmentation.
- the structure of the compound represented by the general formula (1) partially matches that of tranexamic acid, but it is known that it is not metabolized to tranexamic acid in vivo. That is, the whitening action of the compound represented by the general formula (1) is considered to be due to a mechanism different from that of tranexamic acid, and at least the structure of (4-aminomethylcyclohexylcarbonyl) phenyl group is involved in the exertion of the action. Presumed to be.
- cetraxate described in Patent Document 1 is an ester derivative of tranexamic acid, and exhibits whitening action by its own structure and by the ester bond being cleaved by metabolism to become tranexamic acid.
- the whitening agent of the present invention can be contained in a whitening composition, and is particularly preferably a composition for external use that can be expected to have an effect of percutaneous absorption.
- the form of the external composition for skin is not particularly limited as long as it is applied externally to the skin, and preferred examples include cosmetics (including quasi-drugs) and pharmaceuticals.
- the compound represented by the general formula (1) has been confirmed to have high safety, and can be continuously applied in the form of a daily-use cosmetic.
- the dosage form of the composition for external skin is not particularly limited, and examples thereof include a lotion dosage form, an emulsifier type such as emulsion and cream, an oil dosage form, a gel dosage form, a pack, and a cleaning agent.
- the amount is preferably 0.01% to 20% by mass, more preferably 0.1 to 10% in total, based on the total amount of the composition.
- the content is 5% by mass, more preferably 1 to 5% by mass, a desired effect can be easily obtained and the degree of freedom in formulation design can be secured.
- the skin whitening composition for whitening of this invention can contain arbitrarily the component mix
- Such ingredients include, for example, macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, hardened coconut oil, hardened oil Oil, wax, etc., liquid paraffin, squalane, pristane, ozokerite, paraffin, ceresin, petrolatum, microcrystalline Hydrocarbons such as wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; cetyl alcohol, stearyl alcohol, isostearyl alcohol Higher alcohols such as alcohol, behenyl
- Anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, alkylsulfuric acid triethanolamine ether; cationic surfactants such as stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide Class: Imidazoline amphoteric surfactant (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.), betaine surfactant (alkyl betaine, amide betaine, sulfobetaine, etc.), acyl Amphoteric surfactants such as methyl taurine; sorbitan fatty acid esters (such as sorbitan monostearate and sorbitan sesquioleate), glycerin fatty acids (such as glyceryl monostearate), propylene glycol Fatty acid esters (such as propylene glycol monostearate), hydrogenated cast
- Moisturizing components such as sodium pyrrolidone carboxylate, lactic acid, sodium lactate; mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, sulfuric acid, which may be treated on the surface Powders such as barium; inorganic pigments such as bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, and zinc oxide that may be treated on the surface; even if the surface is treated Pale agents such as good mica titanium, fish phosphorus foil, bismuth oxychloride; red 202, red 228, red 226, yellow 4 and blue 404, which may be laked, yellow No. 5, Red No. 505, Red No.
- Organic dyes such as Red No. 204; Organic powders such as polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer; Paraaminobenzoic acid UV absorbers; Anthranilic acid UV absorbers; Salicylic acid UV absorbers Agents: Cinnamic acid UV absorbers; Benzophenone UV absorbers; Sugar UV absorbers; 2- (2'-hydroxy-5'-t-octylphenyl) benzotriazole, 4-methoxy-4'-t-butyl UV absorbers such as dibenzoylmethane;
- Vitamin B such as ⁇ -tocopherol, ⁇ -tocopherol, ⁇ -tocopherol, vitamin E such as vitamin E acetate, vitamin D, vitamin H, vitamins such as pantothenic acid, panthetin, pyrroloquinoline quinone, etc .
- methylparaben Antibacterial agents (preservatives) such as ethyl paraben, butyl paraben and phenoxyethanol; anti-inflammatory agents such as glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin; retinol, ascorbine Wrinkle improving agents such as
- a whitening agent other than the whitening agent of the present invention may be blended together.
- alkylresorcinol, ascorbic acid or a derivative thereof, placenta extract, plant extracts such as saxifrage and pearl barley, arbutin and the like can be mentioned.
- ⁇ Test of whitening effect> Cosmetics described in Table 1 (Examples 1 to 9, Comparative Examples, and Reference Examples) were prepared by conventional methods. About each prepared cosmetics, the whitening effect (improvement effect of pigmentation) was evaluated by the following method. That is, a total of 8 test sites of 0.5 cm ⁇ 0.5 cm were provided on the inner sides of the left and right upper arms of 10 panelists who participated freely. The provided site was irradiated with UV radiation of a minimum erythema amount (1 MED) once a day for 3 consecutive days.
- a minimum erythema amount (1 MED)
- the cosmetic of any of Examples 1 to 9 and Reference Example in the comparative example and the remaining 7 places twice a day for 25 consecutive days 50 ⁇ L of each was applied.
- the skin lightness (L * value) of each test site was measured with a color difference meter (CR-300, Konica Minolta Co., Ltd.).
- the difference in skin lightness ( ⁇ L * value) was calculated by subtracting the L * value of the cosmetic application site of the comparative example from the L * value. Since the L * value is lower as the degree of pigmentation is stronger, it can be determined that the pigmentation is improved as the ⁇ L * value is larger.
- the skin lotion which is an external preparation for skin of this invention was prepared with the formulation shown in Table 3. That is, the component A was heated at room temperature and the component B was heated and mixed at 60 ° C., and B was gradually added to A with stirring, followed by cooling with stirring to obtain a lotion. This skin lotion was confirmed to have a whitening effect when applied to the skin.
- a skin lotion that is an external preparation for skin of the present invention was prepared. That is, the component A was heated at room temperature and the component B was heated and mixed at 60 ° C., and B was gradually added to A with stirring, followed by cooling with stirring to obtain a lotion. This skin lotion was confirmed to have a whitening effect when applied to the skin.
- emulsion which is the skin external preparation of this invention was prepared by the prescription shown in Table 6. That is, the components A and B were heated and mixed at 80 ° C., and B was gradually added to A under stirring, followed by stirring and cooling to obtain an emulsion. It was confirmed that this emulsion obtained a whitening effect when applied to the skin.
- W / O cream which is an external preparation for skin of the present invention was prepared. That is, the components A and B were heated and mixed at 80 ° C., and A was gradually added to B under stirring, followed by stirring and cooling to obtain a W / O cream. This W / O cream was confirmed to have a whitening effect when applied to the skin.
- a W / O foundation that is an external preparation for skin of the present invention was prepared. That is, the components A and B were heated and mixed at 80 ° C., and A was gradually added to B under stirring, followed by stirring and cooling to obtain a W / O foundation. This W / O foundation was confirmed to have a whitening effect when applied to the skin.
- W / O sunscreen which is a skin external preparation of the present invention
- the components A and B were heated and mixed at 80 ° C., respectively, and A was gradually added to B under stirring, followed by stirring and cooling to obtain a W / O sunscreen.
- This W / O sunscreen was confirmed to provide a whitening effect when applied to the skin.
- the whitening agent of the present invention has an excellent whitening effect, it can be suitably contained in a skin external composition for whitening, and is very useful industrially.
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Abstract
Description
このような色素沈着が関連する皮膚症状は外観から容易に認められるため、顔の印象に大きく影響する。そのため、皮膚の色素沈着の予防や改善に対する関心は、肌を美しく見せたいという願望を持つ人を中心にとても高く、美白剤や美白用化粧料の需要は近年大きいものとなっている。
しかしながら、従来の美白剤では一定の美白効果が認められるものの十分に満足いくものではない場合があったり、美白作用を発揮する濃度では望まない他の作用(副反応)が生じたりする場合がある。そのため、安全性が高く、かつ優れた美白作用を発揮する新たな成分の需要があり、研究開発が進められている。
本発明の美白剤の有効成分としては、一般式(1)で表される化合物又はその酸付加塩のいずれでもよいが、酸付加塩のほうがより好ましい。
2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸メチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸エチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸プロピル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸ブチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸ペンチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]酢酸ヘキシル;
2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エタノール、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エチルホルメート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エチルアセテート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エチルプロピオネート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エチルブチレート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エチルペンタノエート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]エチルヘキサノエート;
2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸メチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸エチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸プロピル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸ブチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸ペンチル、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸ヘキシル;
2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロパノール、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルホルメート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルアセテート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルプロピオネート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルブチレート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルペンタノエート、2-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルヘキサノエート;
3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸(化合物1)、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸メチル、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸エチル、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸プロピル、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸ブチル、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸ペンチル、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピオン酸ヘキシル(化合物2);
3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロパノール(化合物3)、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルホルメート、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルアセテート、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルプロピオネート、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルブチレート、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルペンタノエート、3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルヘキサノエート(化合物4);
2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロパノール、2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルホルメート、2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルアセテート、2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルプロピオネート、2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルブチレート、2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルペンタノエート、2-メチル-3-[p-(4-アミノメチルシクロヘキシルカルボニル)フェニル]プロピルヘキサノエート(化合物5)。
なお、本明細書において美白とは、色素沈着の予防及び/又は改善をいい、より具体的には、シミ、くすみ、そばかす、日焼け、皮膚の炎症や刺激による黒ずみ等のメラニン産生亢進、過剰蓄積、及び沈着異常等により生じる色素沈着症状、並びにステロイド等の薬物による皮膚の黒化症等の色素沈着をもたらす疾患等による色素沈着症状などの、予防及び/又は改善をいう。
本発明の美白剤の作用機序については、詳細は不明であるが、チロシナ-ゼ阻害作用、チロシナ-ゼ遺伝子発現抑制作用、チロシナ-ゼ蛋白発現抑制作用、チロシナ-ゼ関連蛋白分解作用等のチロシナ-ゼ活性阻害作用、プロトンポンプ阻害作用、メラノサイトのケラチノサイトへのメラノソ-ム受け渡し阻害作用、又は新たな作用機序により、色素沈着を予防及び/又は改善することが推測される。
本発明は、別の側面から、一般式(1)で表される化合物又はその酸付加塩の、美白のためのあるいは色素沈着の予防及び/又は改善のための使用ということもできる。
本発明は、別の側面から、一般式(1)で表される化合物又はその酸付加塩の、美白剤の製造における使用ということもできる。
本発明は、別の側面から、美白あるいは色素沈着の予防及び/又は改善のために使用される一般式(1)で表される化合物又はその酸付加塩ということもできる。
なお、特許文献1に記載のセトラキサートは、トラネキサム酸のエステル誘導体であり、それ自体の構造により、及び代謝によりエステル結合が切断されてトラネキサム酸になることにより美白作用を発揮する。
皮膚外用組成物の剤型としては、特に限定されず、例えば、ローション剤型、乳液やクリーム等の乳化剤型、オイル剤型、ジェル剤型、パック、洗浄料等が挙げられる。
かかる成分としては、例えば、マカデミアナッツ油、アボガド油、トウモロコシ油、オリーブ油、ナタネ油、ゴマ油、ヒマシ油、サフラワー油、綿実油、ホホバ油、ヤシ油、パーム油、液状ラノリン、硬化ヤシ油、硬化油、モクロウ、硬化ヒマシ油、ミツロウ、キャンデリラロウ、カルナウバロウ、イボタロウ、ラノリン、還元ラノリン、硬質ラノリン、ホホバロウ等のオイル、ワックス類;流動パラフィン、スクワラン、プリスタン、オゾケライト、パラフィン、セレシン、ワセリン、マイクロクリスタリンワックス等の炭化水素類;オレイン酸、イソステアリン酸、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、ベヘン酸、ウンデシレン酸等の高級脂肪酸類;セチルアルコール、ステアリルアルコール、イソステアリルアルコール、ベヘニルアルコール、オクチルドデカノール、ミリスチルアルコール、セトステアリルアルコール等の高級アルコール等;イソオクタン酸セチル、ミリスチン酸イソプロピル、イソステアリン酸ヘキシルデシル、アジピン酸ジイソプロピル、セバチン酸ジ-2-エチルヘキシル、乳酸セチル、リンゴ酸ジイソステアリル、ジ-2-エチルヘキサン酸エチレングリコール、ジカプリン酸ネオペンチルグリコール、ジ-2-ヘプチルウンデカン酸グリセリン、トリ-2-エチルヘキサン酸グリセリン、トリ-2-エチルヘキサン酸トリメチロールプロパン、トリイソステアリン酸トリメチロールプロパン、テトラ-2-エチルヘキサン酸ペンタエリトリット等の合成エステル油類;ジメチルポリシロキサン、メチルフェニルポリシロキサン、ジフェニルポリシロキサン等の鎖状ポリシロキサン;オクタメチルシクロテトラシロキサン、デカメチルシクロペンタシロキサン、ドデカメチルシクロヘキサシロキサン等の環状ポリシロキサン;アミノ変性ポリシロキサン、ポリエーテル変性ポリシロキサン、アルキル変性ポリシロキサン、フッ素変性ポリシロキサン等の変性ポリシロキサン等のシリコーン油等の油剤類;
表1に記載の化粧料(実施例1~9、比較例、及び参考例)を、それぞれ定法で調製した。
調製した各化粧料について、以下の方法で美白効果(色素沈着の改善効果)を評価した。すなわち、自由意思で参加したパネラー10名の左右上腕内側部に0.5cm×0.5cmの試験部位を合計8ケ所設けた。設けた部位に最少紅斑量(1MED)の紫外線照射を1日1回、3日連続して3回照射した。試験1日目の紫外線照射終了時(1回目照射終了後)より、1日2回25日連続して比較例と残りの7か所に実施例1~9及び参考例のいずれかの化粧料を各50μL塗布した。25日間の塗布終了24時間後に色彩色差計(CR-300、コニカミノルタ株式会社)にて各試験部位の皮膚明度(L*値)を測定し、実施例又は参考例の化粧料の塗布部位のL*値から比較例の化粧料の塗布部位のL*値を減じることにより皮膚明度の差(ΔL*値)を算出した。L*値は、色素沈着の程度が強いほど低い値となるため、ΔL*値が大きいほど、色素沈着が改善されたと判断することができる。
表3に示す処方で、本発明の皮膚外用剤である化粧水を調製した。すなわち、Aの成分を常温で、Bの成分を60℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却して化粧水を得た。
この化粧水は皮膚に適用したときに美白効果が得られることが確認された。
表4に示す処方で、本発明の皮膚外用剤である化粧水を調製した。すなわち、Aの成分を常温で、Bの成分を60℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却して化粧水を得た。
この化粧水は皮膚に適用したときに美白効果が得られることが確認された。
表5に示す処方で、本発明の皮膚外用剤であるエッセンスを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却してエッセンスを得た。
このエッセンスは皮膚に適用したときに美白効果が得られることが確認された。
表6に示す処方で、本発明の皮膚外用剤である乳液を調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却して乳液を得た。
この乳液は皮膚に適用したときに美白効果が得られることが確認された。
表7に示す処方で、本発明の皮膚外用剤であるO/Wクリームを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却してO/Wクリームを得た。
このO/Wクリームは皮膚に適用したときに美白効果が得られることが確認された。
表8に示す処方で、本発明の皮膚外用剤であるW/Oクリームを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でBにAを徐々に加え、攪拌冷却してW/Oクリームを得た。
このW/Oクリームは皮膚に適用したときに美白効果が得られることが確認された。
表9に示す処方で、本発明の皮膚外用剤であるO/Wファンデーションを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却してO/Wファンデーションを得た。
このO/Wファンデーションは皮膚に適用したときに美白効果が得られることが確認された。
表10に示す処方で、本発明の皮膚外用剤であるW/Oファンデーションを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でBにAを徐々に加え、攪拌冷却してW/Oファンデーションを得た。
このW/Oファンデーションは皮膚に適用したときに美白効果が得られることが確認された。
表11に示す処方で、本発明の皮膚外用剤であるO/W日焼け止めを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でAにBを徐々に加え、攪拌冷却してO/W日焼け止めを得た。
このO/W日焼け止めは皮膚に適用したときに美白効果が得られることが確認された。
表12に示す処方で、本発明の皮膚外用剤であるW/O日焼け止めを調製した。すなわち、A及びBの成分を80℃でそれぞれ加温して混合し、攪拌下でBにAを徐々に加え、攪拌冷却してW/O日焼け止めを得た。
このW/O日焼け止めは皮膚に適用したときに美白効果が得られることが確認された。
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| EP3804690B1 (en) | 2024-06-05 |
| TW202015653A (zh) | 2020-05-01 |
| US20210196599A1 (en) | 2021-07-01 |
| EP3804690A4 (en) | 2022-06-08 |
| MX2020012483A (es) | 2021-02-15 |
| US12151010B2 (en) | 2024-11-26 |
| JPWO2019230274A1 (ja) | 2021-06-17 |
| CA3101313A1 (en) | 2019-12-05 |
| CA3101313C (en) | 2023-01-24 |
| KR102513180B1 (ko) | 2023-03-23 |
| IL278816A (en) | 2021-01-31 |
| BR112020023802B1 (pt) | 2023-10-31 |
| BR112020023802A2 (pt) | 2021-02-23 |
| CN112135599A (zh) | 2020-12-25 |
| IL278816B2 (en) | 2023-11-01 |
| UA126100C2 (uk) | 2022-08-10 |
| CN112135599B (zh) | 2023-03-31 |
| AU2019278251A1 (en) | 2020-12-10 |
| EP3804690A1 (en) | 2021-04-14 |
| TWI874318B (zh) | 2025-03-01 |
| RU2757906C1 (ru) | 2021-10-22 |
| SG11202011525WA (en) | 2020-12-30 |
| ES2992858T3 (en) | 2024-12-18 |
| IL278816B1 (en) | 2023-07-01 |
| AU2019278251B2 (en) | 2021-12-16 |
| JP7239573B2 (ja) | 2023-03-14 |
| NZ770176A (en) | 2024-02-23 |
| KR20210003827A (ko) | 2021-01-12 |
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