JP4565689B2 - External composition for skin to suppress α-MSH - Google Patents

External composition for skin to suppress α-MSH Download PDF

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Publication number
JP4565689B2
JP4565689B2 JP2000031260A JP2000031260A JP4565689B2 JP 4565689 B2 JP4565689 B2 JP 4565689B2 JP 2000031260 A JP2000031260 A JP 2000031260A JP 2000031260 A JP2000031260 A JP 2000031260A JP 4565689 B2 JP4565689 B2 JP 4565689B2
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msh
skin
weight
external preparation
parts
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JP2001220347A5 (en
JP2001220347A (en
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明弘 多田
朋美 加藤
崇行 片桐
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Pola Chemical Industries Inc
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Pola Chemical Industries Inc
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Description

【0001】
【発明の属する技術分野】
本発明は、α−MSH阻害剤及びそれを含有してなる化粧料などに好適な美白用の皮膚外用剤に関する。
【0002】
【従来の技術】
白く美しい肌は万人が欲するものであり、この様な肌の具現を一大テーマに、種々の美白化粧料が開発されてきた。この様な美白に関する、メカニズムとしては、以前はチロシナーゼ阻害作用が中心に論議されていたが、近年に於いてはこれに加えて、チロシナーゼ関連タンパクの生成阻害作用、ピンクアイダイリュートジーン発現阻害作用、α−MSHの受容体への結合阻害作用等のメカニズムが知られるようになってきている。しかしながら、これらのメカニズムについてのそれぞれの作用を有する物質については未だ多くは知られていない。これらの内、チロシナーゼ、チロシナーゼ関連蛋白、ピンクアイダイリュートジーンの発現異常が直接アルビノへ関与するのに比して、α−MSHのレセプター発現異常、言い換えれば、α−MSHのそのレセプターへの結合不全は、北部ヨーロッパの赤毛、皮膚の白色化現象であるように、その関与する色素異常症が異なっていることが推定される。その一方、チロシナーゼの発現抑制に優れる物質を投与しても改善しない色黒があることから、前記チロシナーゼ関連蛋白、ピンクアイダイリュートジーンの発現抑制作用或いはα−MSHの結合阻害作用等新規メカニズムを有する有効成分を含有する美白用の皮膚外用剤の開発が望まれていた。中でも、炎症或いは免疫が関与する色黒(色素異常)に対応した美白用の皮膚外用剤の開発が望まれていた。又、α−MSHは色素異常に関与するばかりではなく、免疫系や炎症系へも大きく関与していると言われており、これらの系に於けるα−MSHの過剰な発現も種々の疾病の原因になっていると言われており、この様な過剰発現の抑制手段の開発も望まれていた。
【0003】
一方、後記一般式(I)に表される化合物及び/又はその生理的に許容される塩は、既に公知の化合物であるが、これらの化合物にα−MSH阻害作用が有ることは全く知られていなかった。
【0004】
【化3】

Figure 0004565689
一般式(I)
(但し、式中R1はアルケニル基を表し、R2、R3、R4、R5はそれぞれ独立に、水酸基、炭素数1〜4のアルキルオキシ基又は炭素数1〜4のアシルオキシ基を表す。)
【0005】
【発明が解決しようとする課題】
本発明は、この様な状況下為されたものであり、α−MSHを阻害し、これが関与する疾病或いは生体に好ましくない現象の発現を予防或いは改善する手段を提供することを課題とする。
【0006】
【課題の解決手段】
本発明者らは、この様な状況に鑑みて、α−MSHを阻害し、これが関与する疾病或いは生体に好ましくない現象の発現を予防或いは改善する手段を求めて、鋭意研究努力を重ねた結果、上記一般式(I)に表される化合物及び/又は生理的に許容されるその塩に優れたα−MSH阻害作用を見いだし発明を完成させた。更に、検討を重ね、かかる化合物を皮膚外用剤に含有させることにより、α−MSH関与する皮膚の疾病或いは異常、例えば、炎症或いは免疫が関与する色黒(色素異常)に著効を有する皮膚外用剤が得られることを見いだし、発明を完成させるに至った。即ち、本発明は、次に示す技術に関するものである。
(1)一般式(I)に表される化合物及び/又はその生理的に許容される塩からなる、α−MSH阻害剤。
(2)一般式(I)に表される化合物が、ソフォラフラバノンG(化学構造式1)であることを特徴とする、請求項1に記載のα−MSH阻害剤。
(3)(1)又は(2)に記載のα−MSH阻害剤から選ばれる1種乃至は2種以上を含有する、α−MSH阻害用の皮膚外用剤。
(4)α−MSH阻害が、α−MSH関与の色素生成の抑制を目的とすることを特徴とする、(3)に記載の皮膚外用剤。
(5)炎症及び/又は免疫関与の色素異常症対応用のものであることを特徴とする、(3)又は(4)に記載の皮膚外用剤。
(6)化粧料であることを特徴とする、(3)〜(5)何れか1項に記載の皮膚外用剤。以下、本発明について、実施の形態を中心に更に詳細に説明を加える。
【0007】
【化4】
Figure 0004565689
化学構造式1
【0008】
【発明の実施の形態】
(1)本発明のα−MSH阻害剤
本発明のα−MSH阻害剤は、上記一般式(I)に表される化合物及び/又は生理的に許容されるその塩からなる。一般式(I)に表される化合物は様々な類縁体や立体異性体が存在するが、これらの中では、立体構造を考えなければ化学構造式1に表されるソフォラフラバノンGが効果の点で好ましい。この様な化合物は、植物体中にふくまれているものが多いので、植物体の抽出物を精製することにより得ることが出来る。例えば、化学構造式1で表される化合物であれば、マメ科クララ(クジン)等のマメ科エンジュ属の植物体中に多く含まれており、これらの植物体にメタノールなどの溶媒を加え、室温であれば数日、沸点付近の温度であれば数時間浸漬し、濾過して不溶物を取り除いた後、シリカゲルカラムクロマトグラフィーやODSカラムを装着した逆相の分取液体クロマトグラフィーによって精製分離する事が出来る。又、構造が比較的簡単なため、化学合成によって合成することも可能であり、この様に製造されて、αMSH阻害のために使用されるものも、本発明のα−MSH阻害剤の技術的範囲に属する。又、本発明のα−MSH阻害剤として、一般式(I)の化合物を塩の形態で用いる場合、かかる塩としては、生理的に許容されるものであれば、特段の限定は受けず、例えば、ナトリウム、カリウムなどのアルカリ金属塩、カルシウムやマグネシウムのようなアルカリ土類金属塩、アンモニウム塩、トリエタノールアミンやトリエチルアミンなどの有機アミン塩、リジンやアルギニンなどの塩基性アミノ酸塩等が好適に例示できる。その他、水酸基に、アルキルハライドと塩基、アシルハライドと塩基のような試薬の組合せで処理して、アシル基或いはアルキル基を導入した誘導体や糖鎖を導入した配糖体も本発明の技術的範囲に属する。本発明の皮膚外用剤において、この様な本発明のα−MSH阻害剤は唯一種を含有することも出来るし、2種以上を組み合わせて含有することも出来る。本発明の皮膚外用剤に於けるα−MSH阻害剤の好ましい含有量は、皮膚外用剤全量に対して総量で、0.001〜10重量%であり、更に好ましくは、0.01〜5重量%である。これは少なすぎると効果を発揮しない場合があり、多すぎても効果が頭打ちになり、製剤の自由度を損なう場合があるからである。
【0009】
<製造例>
マメ科クララ(クジン)の植物体(地下部)500gに100%メタノール5lを加え、3時間加熱還流し、冷却、濾過、濃縮の工程を経て、濃縮物に水5lとジクロロメタン5lとを加え、液液抽出し、ジクロロメタン層を取り、濃縮した後、シリカゲルカラムクロマトグラフィー(溶出溶媒;クロロホルム:メタノール=100:0→90:10)で精製し、ベンゼンから再結晶して、ソフォラフラバノンG(化学構造式1)を得た。
【0010】
(2)本発明の皮膚外用剤
本発明のα−MSH阻害用の皮膚外用剤は上記α−MSH阻害剤を含有することを特徴とする。本発明で言う、皮膚外用剤とは、皮膚上に外用で適用される組成物の総称であり、例えば、化粧料、皮膚外用医薬、皮膚外用消毒剤、皮膚外用殺菌剤等が例示でき、これらの内では、化粧料と皮膚外用医薬が好ましく例示でき、中でも化粧料が特に好適に例示できる。これは、本発明のα−MSH阻害剤の作用が極めてマイルドである為、日常的な使用が可能であるからである。ここで、αMSH阻害用とは、αMSHの発現が関与する疾病或いは生体にとって好ましくない反応を予防或いは改善する目的で使用されることを意味する。この様な疾病或いは生体に好ましくない反応としては、例えば、免疫異常、炎症、或いは色素異常などが挙げられ、この中ではα−MSH関与の色素異常或いはトラブルが好適に例示できる。かかるα−MSH関与の色素トラブルとしては、炎症或いは免疫反応が関与するもの等が例示できる。この様な色素トラブルには、通常のアスコルビン酸乃至はその誘導体などにより緩和することのできないくすみ等が例示できる。本発明の皮膚外用剤に於いては、上記α−MSH阻害剤が、α−MSHとそのレセプターの結合を阻害するため、色素異常以外にもこのものが関与する好ましくない生理作用を阻害することができる。この様な生理作用としては化学物質に対する過敏な反応や炎症反応が例示できる。この為、本発明のα−MSH阻害用の皮膚外用剤は炎症反応が起こりやすい夏の時期の化粧料として有用である。又、通常の化粧料などの皮膚外用剤が使用しにくい、敏感肌の人に適用しても、その抗炎症作用のためトラブルを起こすことは通常の化粧料に比較して極めて少ない。この様な目的の皮膚外用剤も本発明の皮膚外用剤として好適である。
【0011】
本発明の皮膚外用剤では、上記本発明のα−MSH阻害剤以外に、通常化粧料、皮膚外用医薬などの皮膚外用剤で使用される任意の成分を含有することができる。この様な任意の成分としては、例えば、スクワラン、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、ホホバ油、カルナウバワックス,オレイン酸オクチルドデシル等のエステル類、オリーブ油、牛脂、椰子油等のトリグリセライド類、ステアリン酸、オレイン酸、リチノレイン酸等の脂肪酸、オレイルアルコール、ステアリルアルコール、オクチルドデカノール等の高級アルコール、スルホコハク酸エステルやポリオキシエチレンアルキル硫酸ナトリウム等のアニオン界面活性剤類、アルキルベタイン塩等の両性界面活性剤類、ジアルキルアンモニウム塩等のカチオン界面活性剤類、ソルビタン脂肪酸エステル、脂肪酸モノグリセライド、これらのポリオキシエチレン付加物、ポリオキシエチレンアルキルエーテル、ポリオキシエチレン脂肪酸エステル等の非イオン界面活性剤類、ポリエチレングリコール、グリセリン、1,3−ブタンジオール等の多価アルコール類、増粘・ゲル化剤、酸化防止剤、紫外線吸収剤、色剤、防腐剤、粉体等を含有することができる。これらの必須の成分と任意の成分とを常法に従って処理することにより、本発明の皮膚外用剤を得ることができる。
【0012】
【実施例】
以下に、実施例を挙げて、本発明について更に詳細に説明を加えるが、本発明がかかる実施例にのみ限定を受けるものではない。
【0013】
<実施例1>上記製造例で示す方法によって得た、ソフラフラバノンGについて、α−MSHに対する作用を、培養細胞(マウスメラノーマB−16細胞)を用いて、サイクリックAMPの産生量を指標に検討した。細胞は10%FBS加MEM(イーグルの最少培地)で5%炭酸ガス湿度95%37℃の条件で96ウェルのプレートで細胞10 4 個/ウェル、培地160μl/ウェルの条件で1晩培養した。これにα−MSH(1×10 -7 M)及びα−MSH阻害剤1の種々の濃度を加え、アマシャム社製のバイオトレイク・セルラー・コミュニケーション・アッセーcAMPエンザイムイムノアッセイ・システム(コードRPN225)を用いて、450nmの分光光度として測定した。対照としてはα−MSH、α−MSH阻害剤を共に添加しないものを用い、このcAMP濃度を100として、それぞれのcAMP比濃度を測定した。ここで、cAMPの産生量を指標としたのは、細胞がα−MSHに作用するとcAMPの産生を促す作用が知られているからである。結果を図1に示す。これより本発明のα−MSH阻害剤は優れたα−MSHの活性阻害作用を示すことがわかる。
【0014】
<実施例2>
下記に示す処方に従って、本発明の皮膚外用剤であるローション(化粧料)を作成した。即ち、処方成分を攪拌・可溶化し、化粧水を得た。このものを今までビタミンCを有効成分とする美白化粧料を使用していてもくすみが改善しなかった人に朝・晩2回3週間使用してもらったところ、著しいくすみの改善を認めた。
グリセリン 5 重量部
1,3−ブタンジオール 5 重量部
エタノール 8 重量部
ローヤルゼリー 0.1重量部
ヒアルロン酸ナトリウム 0.1重量部
スフォラフラバノンG 0.1重量部
ポリオキシエチレン硬化ヒマシ油 0.1重量部
メチルパラベン 0.2重量部
水 81.4重量部
【0015】
<実施例3>
以下に示す処方に従って、本発明の皮膚外用剤(化粧水)である、乳液を作成した。即ち、イ、ロ、ハをそれぞれ70℃に加熱して、イにロを加え中和し、これにハを徐々に加え乳化し、ホモジナイザーで粒子を整えた後、攪拌冷却し乳液を得た。このものをアトピー性皮膚炎によるくすみに悩む人に6週間朝・晩2回使用してもらったところ、著しい炎症とくすみの改善を観察した。

水 47 重量部
メタクリル酸(C10-30)
アルキル・アクリル酸ポリマー 0.3重量部
1,2−ペンタンジオール 5 重量部
1,3−ブタンジオール 5 重量部
ソフォラフラバノンG 0.5重量部

水 30 重量部
水酸化カリウム 0.2重量部

スクワラン 8 重量部
ホホバ油 4 重量部
グリセリルモノウンデシレート 2 重量部
【0016】
<実施例4>
以下に示す処方に従って、本発明の皮膚外用剤である、乳液(皮膚外用医薬;抗真菌剤)を作成した。即ち、イ、ロ、ハをそれぞれ70℃に加熱して、イにロを加え中和し、これにハを徐々に加え乳化し、ホモジナイザーで粒子を整えた後、攪拌冷却し乳液を得た。このものをビラン性のメンタグロファイトによる水虫に悩む人に6週間1日1回使用してもらったところ、水虫の治癒と炎症部位の色沈の改善を観察した。

水 47 重量部
メタクリル酸(C10-30)
アルキル・アクリル酸ポリマー 0.3重量部
1,2−ペンタンジオール 5 重量部
1,3−ブタンジオール 5 重量部
ソフォラフラバノンG 0.5重量部

水 30 重量部
水酸化カリウム 0.2重量部

スクワラン 8 重量部
ホホバ油 3 重量部
グリセリルモノウンデシレート 2 重量部
ビフォナゾール 1 重量部
【0017】
【発明の効果】
本発明によれば、α−MSHの阻害剤を提供し、α−MSHの関与する疾病又は生体に好ましくない反応、例えば、くすみなどの色素異常を改善する皮膚外用剤を提供することができる。
【図面の簡単な説明】
【図1】 α−MSH阻害活性を示す図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a skin whitening agent for whitening suitable for an α-MSH inhibitor and cosmetics containing the same.
[0002]
[Prior art]
White and beautiful skin is what everyone wants, and various whitening cosmetics have been developed with the theme of realizing such skin as a major theme. In the past, the tyrosinase inhibitory action was mainly discussed as a mechanism for such whitening. In recent years, however, in addition to this, tyrosinase-related protein production inhibitory action and pink eye dilute gene expression inhibitory action have been discussed. Mechanisms such as an inhibitory action of α-MSH binding to receptors have been known. However, much is not yet known about substances having their respective effects on these mechanisms. Among these, abnormal expression of α-MSH receptor, in other words, binding of α-MSH to its receptor, compared to the fact that abnormal expression of tyrosinase, tyrosinase-related protein and pink eye dilute gene is directly involved in albino Insufficiency is presumed to be different in pigmented dysfunction, as is the phenomenon of whitening of red hair and skin in northern Europe. On the other hand, since there is a color black that does not improve even if a substance excellent in suppressing tyrosinase expression is administered, a novel mechanism such as an inhibitory action on the expression of the tyrosinase-related protein and pink eye dilute gene or an inhibitory action of α-MSH is provided. It has been desired to develop a skin external preparation for whitening containing the active ingredient. In particular, it has been desired to develop a skin whitening agent for whitening corresponding to darkness (dye abnormality) involving inflammation or immunity. In addition, it is said that α-MSH is not only involved in pigment abnormalities but is also greatly involved in the immune system and inflammatory system, and excessive expression of α-MSH in these systems is also associated with various diseases. It has been said that the development of such a means for suppressing overexpression has been desired.
[0003]
On the other hand, the compounds represented by the following general formula (I) and / or physiologically acceptable salts thereof are already known compounds, but it is completely known that these compounds have an α-MSH inhibitory action. It wasn't.
[0004]
[Chemical 3]
Figure 0004565689
Formula (I)
(In the formula, R1 represents an alkenyl group, and R2, R3, R4, and R5 each independently represent a hydroxyl group, an alkyloxy group having 1 to 4 carbon atoms, or an acyloxy group having 1 to 4 carbon atoms.)
[0005]
[Problems to be solved by the invention]
The present invention has been made under such circumstances, and it is an object of the present invention to provide means for inhibiting α-MSH and preventing or improving the development of a disease in which the α-MSH is involved or an undesirable phenomenon in a living body.
[0006]
[Means for solving problems]
In view of such circumstances, the present inventors have intensively researched for a means for inhibiting α-MSH and preventing or improving the occurrence of diseases involving this or undesirable phenomena in living organisms. The present inventors have found an excellent α-MSH inhibitory action on the compounds represented by the above general formula (I) and / or physiologically acceptable salts thereof, and have completed the invention. Furthermore, extensive studies, such compounds by containing the skin external preparation, alpha-MSH is a disease or abnormal skin involved, for example, skin having significant effects on the color black (pigmentation disorders) inflammation or immunity involving The inventors have found that an external preparation can be obtained, and have completed the invention. That is, the present invention relates to the following technique.
(1) An α-MSH inhibitor comprising the compound represented by the general formula (I) and / or a physiologically acceptable salt thereof.
(2) The α-MSH inhibitor according to claim 1, wherein the compound represented by the general formula (I) is sophoraflavanone G (chemical structural formula 1).
(3) A skin external preparation for inhibiting α-MSH, comprising one or more selected from the α-MSH inhibitors according to (1) or (2).
(4) The external preparation for skin according to (3), wherein the inhibition of α-MSH is aimed at suppressing pigment formation involving α-MSH.
(5) The external preparation for skin according to (3) or (4), which is for treating dysplasia associated with inflammation and / or immunity.
(6) The external preparation for skin according to any one of (3) to (5), which is a cosmetic. Hereinafter, the present invention will be described in more detail with a focus on embodiments.
[0007]
[Formula 4]
Figure 0004565689
Chemical structural formula 1
[0008]
DETAILED DESCRIPTION OF THE INVENTION
(1) α-MSH inhibitor of the present invention The α-MSH inhibitor of the present invention comprises a compound represented by the above general formula (I) and / or a physiologically acceptable salt thereof. The compound represented by the general formula (I) has various analogs and stereoisomers. Among these, if the three-dimensional structure is not considered, the sophoraflavanone G represented by the chemical structural formula 1 is effective. Is preferable. Since many of such compounds are contained in plants, they can be obtained by purifying extracts of plants. For example, if it is a compound represented by the chemical structural formula 1, it is contained in a lot of leguminous Enju genus plants such as leguminous clara (kujin), and a solvent such as methanol is added to these plants. Soak for several days at room temperature, or for several hours at temperatures near the boiling point, filter to remove insolubles, and purify and separate by reverse phase preparative liquid chromatography equipped with silica gel column chromatography or ODS column. I can do it. Further, since the structure is relatively simple, it is also possible to synthesize by chemical synthesis, is produced in this manner, alpha - also those used for MSH inhibition of alpha-MSH inhibitor of the present invention Belongs to the technical scope. In addition, when the compound of the general formula (I) is used in the form of a salt as the α-MSH inhibitor of the present invention, the salt is not particularly limited as long as it is physiologically acceptable. For example, alkali metal salts such as sodium and potassium, alkaline earth metal salts such as calcium and magnesium, ammonium salts, organic amine salts such as triethanolamine and triethylamine, and basic amino acid salts such as lysine and arginine are preferable. It can be illustrated. In addition, the scope of the present invention also includes glycosides in which a hydroxyl group is treated with a combination of a reagent such as an alkyl halide and a base, an acyl halide and a base, and an acyl group or an alkyl group is introduced or a sugar chain is introduced. Belonging to. In the external preparation for skin of the present invention, such an α-MSH inhibitor of the present invention can contain only one species or a combination of two or more. The preferable content of the α-MSH inhibitor in the external preparation for skin of the present invention is 0.001 to 10% by weight, more preferably 0.01 to 5% by weight, based on the total amount of the external preparation for skin. %. This is because if the amount is too small, the effect may not be exhibited. If the amount is too large, the effect reaches a peak, and the degree of freedom of the preparation may be impaired.
[0009]
<Production example>
Add 500 liters of 100% methanol to 500 g of legume clara (kujin) plant body (underground), heat and reflux for 3 hours, and after cooling, filtering and concentrating, add 5 liters of water and 5 liters of dichloromethane to the concentrate. Liquid-liquid extraction was performed, and the dichloromethane layer was collected and concentrated, and then purified by silica gel column chromatography (elution solvent; chloroform: methanol = 100: 0 → 90: 10), recrystallized from benzene, and sophoraflavanone G (chemical Structural formula 1) was obtained.
[0010]
(2) Skin external preparation of the present invention The skin external preparation for α-MSH inhibition of the present invention is characterized by containing the above α-MSH inhibitor. The skin external preparation referred to in the present invention is a general term for compositions applied externally on the skin, and examples thereof include cosmetics, skin external medicine, skin external disinfectants, skin external disinfectants, and the like. Among these, cosmetics and skin external medicines can be preferably exemplified, and among these, cosmetics can be particularly preferably exemplified. This is because the action of the α-MSH inhibitor of the present invention is extremely mild and can be used on a daily basis. Here, α - MSH inhibition means that it is used for the purpose of preventing or improving a disease involving expression of α - MSH or an unfavorable reaction for a living body. Examples of such unfavorable reactions to diseases or living organisms include immune abnormalities, inflammations, and pigment abnormalities. Among them, pigment abnormalities or troubles involving α-MSH can be preferably exemplified. Examples of such pigment troubles involving α-MSH include those involving inflammation or immune reaction. Examples of such pigment troubles include dullness that cannot be alleviated by ordinary ascorbic acid or its derivatives. In the external preparation for skin of the present invention, the α-MSH inhibitor inhibits the binding between α-MSH and its receptor, and therefore inhibits undesired physiological actions involving this in addition to abnormal pigments. Can do. Examples of such physiological actions include hypersensitive reactions and inflammatory reactions to chemical substances. For this reason, the skin external preparation for α-MSH inhibition according to the present invention is useful as a cosmetic in summer when an inflammatory reaction is likely to occur. Moreover, even if it is applied to a person with sensitive skin, which is difficult to use an external preparation for skin, such as a normal cosmetic, troubles due to its anti-inflammatory effect are very few compared to a normal cosmetic. A skin external preparation for such purposes is also suitable as the skin external preparation of the present invention.
[0011]
In addition to the α-MSH inhibitor of the present invention, the external preparation for skin of the present invention can contain any component that is usually used in external preparations for skin such as cosmetics and external pharmaceuticals for skin. Such optional components include, for example, hydrocarbons such as squalane, petrolatum, microcrystalline wax, esters such as jojoba oil, carnauba wax, octyldodecyl oleate, triglycerides such as olive oil, beef tallow and coconut oil. , Fatty acids such as stearic acid, oleic acid, ritinolic acid, higher alcohols such as oleyl alcohol, stearyl alcohol, octyldodecanol, anionic surfactants such as sulfosuccinic acid ester and sodium polyoxyethylene alkylsulfate, alkylbetaine salts, etc. Amphoteric surfactants, cationic surfactants such as dialkylammonium salts, sorbitan fatty acid esters, fatty acid monoglycerides, their polyoxyethylene adducts, polyoxyethylene alkyl ethers, polyoxy Nonionic surfactants such as tylene fatty acid esters, polyhydric alcohols such as polyethylene glycol, glycerin, 1,3-butanediol, thickening / gelling agents, antioxidants, ultraviolet absorbers, colorants, preservatives , Powder and the like can be contained. The skin external preparation of this invention can be obtained by processing these essential components and arbitrary components according to a conventional method.
[0012]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the examples.
[0013]
<Example 1> With respect to sofraflavanone G obtained by the method shown in the above production example, the effect on α-MSH was measured using cultured cells (mouse melanoma B-16 cells) and the production amount of cyclic AMP as an index. investigated. The cells were cultured overnight in 10% FBS-added MEM (Eagle's minimal medium) in a 96-well plate under conditions of 5% carbon dioxide humidity 95% 37 ° C. and 104 4 cells / well of medium and 160 μl / well of medium. Various concentrations of α-MSH (1 × 10 −7 M) and α-MSH inhibitor 1 were added thereto, and a biotlake cellular communication assay cAMP enzyme immunoassay system (code RPN225) manufactured by Amersham was used. And measured as a spectrophotometer of 450 nm. As a control, an α-MSH and an α-MSH inhibitor were not added, and each cAMP specific concentration was measured with this cAMP concentration as 100. Here, the production amount of cAMP was used as an index because an effect of promoting cAMP production when cells act on α-MSH is known. The results are shown in FIG. This shows that the α-MSH inhibitor of the present invention exhibits an excellent α-MSH activity inhibitory action.
[0014]
<Example 2>
A lotion (cosmetic) that is an external preparation for skin of the present invention was prepared according to the formulation shown below. That is, the prescription ingredients were stirred and solubilized to obtain a skin lotion. A person who did not improve dullness even when using whitening cosmetics containing vitamin C as an active ingredient until now was used twice a day for three weeks in the morning and evening, and noticeably improved dullness. .
Glycerin 5 parts by weight 1,3-butanediol 5 parts by weight Ethanol 8 parts by weight Royal jelly 0.1 part by weight Sodium hyaluronate 0.1 part by weight Sporaflavanone G 0.1 part by weight Polyoxyethylene hydrogenated castor oil 0.1 part by weight Methylparaben 0.2 parts by weight Water 81.4 parts by weight
<Example 3>
According to the prescription shown below, the emulsion which is the skin external preparation (skin lotion) of this invention was created. That is, a, b, and c were each heated to 70 ° C., and b was added to neutralize, and c was gradually added to emulsify, and after preparing the particles with a homogenizer, the mixture was cooled with stirring to obtain an emulsion. . A person suffering from dullness due to atopic dermatitis was used twice a day for 6 weeks in the morning and evening, and marked improvement in inflammation and dullness was observed.
B water 47 parts by weight Methacrylic acid (C10-30)
Alkyl / acrylic acid polymer 0.3 parts by weight 1,2-pentanediol 5 parts by weight 1,3-butanediol 5 parts by weight Soforaflavanone G 0.5 parts by weight B water 30 parts by weight Potassium hydroxide 0.2 parts by weight C Squalane 8 parts by weight jojoba oil 4 parts by weight glyceryl monoundecylate 2 parts by weight [0016]
<Example 4>
In accordance with the formulation shown below, an emulsion (external medicine for skin; antifungal agent) that is an external preparation for skin of the present invention was prepared. That is, a, b, and c were each heated to 70 ° C., and b was added to neutralize, and c was gradually added to emulsify, and after preparing the particles with a homogenizer, the mixture was cooled with stirring to obtain an emulsion. . When this was used once a day for 6 weeks by a person suffering from athlete's foot caused by vilantic mentagrophyte, healed athlete's foot and improved color precipitation at the site of inflammation was observed.
B water 47 parts by weight Methacrylic acid (C10-30)
Alkyl / acrylic acid polymer 0.3 parts by weight 1,2-pentanediol 5 parts by weight 1,3-butanediol 5 parts by weight Soforaflavanone G 0.5 parts by weight B water 30 parts by weight Potassium hydroxide 0.2 parts by weight C Squalane 8 parts by weight jojoba oil 3 parts by weight glyceryl monoundecylate 2 parts by weight bifonazole 1 part by weight
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the inhibitor of (alpha) -MSH can be provided and the skin external preparation which improves the reaction which is unfavorable to the disease in which (alpha) -MSH is related, or a biological body, for example, pigment abnormalities, such as dullness, can be provided.
[Brief description of the drawings]
FIG. 1 is a graph showing α-MSH inhibitory activity.

Claims (3)

ソフォラフラバノンG及び/又はその生理的に許容される塩からなる、α−MSH阻害剤。
Figure 0004565689
化学構造式1
An α-MSH inhibitor comprising sophoraflavanone G and / or a physiologically acceptable salt thereof.
Figure 0004565689
Chemical structural formula 1
請求項1に記載のα−MSH阻害剤を皮膚外用剤全量に対して総量で0.01〜5質量%含有する、α−MSH阻害用の皮膚外用剤 The skin external preparation for alpha-MSH inhibition which contains the alpha-MSH inhibitor of Claim 1 in 0.01-5 mass% in total with respect to the skin external preparation whole quantity . 化粧料であることを特徴とする、請求項2に記載の皮膚外用剤。 The external preparation for skin according to claim 2, which is a cosmetic .
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JP2005306795A (en) * 2004-04-23 2005-11-04 Pola Chem Ind Inc Skin care external preparation suitable as quasi-drug
JP2005306796A (en) * 2004-04-23 2005-11-04 Pola Chem Ind Inc Skin care external preparation having anti-inflammatory activity
JP4136997B2 (en) * 2004-04-26 2008-08-20 ポーラ化成工業株式会社 Skin preparation for summer
JP2005314254A (en) * 2004-04-28 2005-11-10 Pola Chem Ind Inc External preparation for skin which is suitable as quasi-drug
JP2005343864A (en) * 2004-06-07 2005-12-15 Kuraray Co Ltd Skin care preparation for external use
US20060110341A1 (en) * 2004-11-24 2006-05-25 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Cosmetic compositions containing Sophora alopecuroides L. extracts

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JPH0873364A (en) * 1994-08-31 1996-03-19 Ichimaru Pharcos Co Ltd Antibacterial and antiseptic agent containing extract of sophora flvescens aitin and cosmetic
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JPS60104005A (en) * 1983-11-08 1985-06-08 Kobayashi Kooc:Kk Skin beutifying cosmetic
JPH0873364A (en) * 1994-08-31 1996-03-19 Ichimaru Pharcos Co Ltd Antibacterial and antiseptic agent containing extract of sophora flvescens aitin and cosmetic
JPH09194344A (en) * 1996-01-19 1997-07-29 Meiji Milk Prod Co Ltd Agent for inhibiting production of melamine and skin cosmetic
JPH1017461A (en) * 1996-06-28 1998-01-20 Shiseido Co Ltd Preparation for external use for improving skin roughness
JPH10298200A (en) * 1997-05-02 1998-11-10 Adriel Dell Calpio Carlos Peptide inhibiting chromatophorotropic hormone
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