JP3569448B2 - N-acyl amino acid and cosmetic using the same - Google Patents

N-acyl amino acid and cosmetic using the same Download PDF

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JP3569448B2
JP3569448B2 JP19415298A JP19415298A JP3569448B2 JP 3569448 B2 JP3569448 B2 JP 3569448B2 JP 19415298 A JP19415298 A JP 19415298A JP 19415298 A JP19415298 A JP 19415298A JP 3569448 B2 JP3569448 B2 JP 3569448B2
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pentadecanoyl
mol
solution
cosmetic
water
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JPH1180105A (en
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和則 石上
充範 竹田
公彦 荻原
達史 石塚
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鹿島石油株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は育毛剤,養毛剤等の化粧料に関し、特に、優れた育毛促進効果、保湿作用、皮下血流量増進作用等を有する育毛用、皮膚用などに好適な化粧料、及び該化粧料の製剤調製の際溶媒に対する溶解性に著しく優れた上記化粧料の有効成分であるN−アシルアミノ酸に関する。
【0002】
【従来の技術】
従来より、各種の薬効剤を配合した化粧料が知られている。例えば育毛剤においては、このような薬効剤として、ビタミンEなどのビタミン類,セリン,メチオニンなどのアミノ酸類、アセチルコリン誘導体などの血管拡張剤、紫根エキス等の抗炎症剤、エラストジオールなどの女性ホルモン剤、セフアランチンなどの皮膚機能亢進剤、パントテン酸銅などのメラニン合成触媒剤、サリチル酸などの角質溶解剤などが配合され、脱毛症の予防及び治療に用いられている。
脂肪酸またはその誘導体が育毛剤等の化粧料に配合された例として、オリーブ油,ヒマシ油等の天然植物油あるいはステアリン酸を製品の物性改善の目的で配合した例が知られている。このような植物油や動物油等の天然に存在する各種脂質の構成脂肪酸はステアリン酸、パルミチン酸等の飽和脂肪酸であれ、オレイン酸、リノール酸等の不飽和脂肪酸であれ、その殆ど全てが偶数の炭素鎖を有する脂肪酸であることは知られている。
また一方で、炭素数が奇数の脂肪酸またはその誘導体を毛髪化粧料に配合した例として、例えば特公昭63−41363号公報,特開平8−337515号公報に記載される化合物がある。
【0003】
【発明が解決しようとする課題】
しかしながら、上記従来の育毛剤等の化粧料、特に、上記特開平8−337515号公報に記載の化粧料は、例えばフケ,カユミ,抜毛などの予防及び改善に有効で、発毛や育毛を促すとされているものの、これを調製すべく有効成分であるN−アシルアミノ酸をエタノール等の溶媒に溶解する際、その溶解性が十分でなく上記育毛剤等の性能を阻害し、この点から、特に、低温時における溶解性の改善が望まれていた。
本発明は、かかる事情下でなされたものであり、優れた育毛促進効果、保湿作用、皮下血流量増進作用等を有する育毛用、皮膚用などに好適な化粧料、及びこれに用いる、溶媒に対する溶解性に著しく優れたN−アシルアミノ酸を提供することを目的とする。
【0004】
【課題を解決するための手段】
本発明者らは、前記目的を達成するために鋭意研究を重ねた結果、化粧料において、ペンタデカノイル基を有する特定のアシルアミノ酸またはその塩が上記溶解性に著しく優れ、これを有効成分として使用することにより、優れた育毛促進効果、保湿作用、皮下血流量増進作用等を奏することを見出したものである。本発明は、かかる知見に基づいて完成したものである。
すなわち本発明は、N−ペンタデカノイルアラニン,N−ペンタデカノイルロイシン,N−ペンタデカノイルメチオニン,N−ペンタデカノイルバリン,N−ペンタデカノイルイソロイシン,N−ペンタデカノイルフェニルアラニン及びN−ペンタデカノイルチロシンから選ばれるN−アシルアミノ酸又はその塩、及びこれらのN−アシルアミノ酸及びその塩の少なくとも一種を有効成分とする化粧料を提供するものである。
【0005】
【発明の実施の形態】
以下に、本発明を更に詳細に説明する。
本発明は、ペンタデカノイル基を有する特定のN−アシルアミノ酸又はその塩、及びこれを有効成分とする化粧料に関するものであるが、ここで特定のN−アシルアミノ酸とは、アミノ酸中のアミノ基の少なくとも一つがペンタデカノイル基によりアシル化されたものであり、N−ペンタデカノイルアラニン,N−ペンタデカノイルロイシン,N−ペンタデカノイルメチオニン,N−ペンタデカノイルバリン,N−ペンタデカノイルイソロイシン,N−ペンタデカノイルフェニルアラニン及びN−ペンタデカノイルチロシンから選ばれるものである。
【0006】
上記N−アシルアミノ酸の塩としては、ナトリウム,カリウム等のアルカリ金属塩、カルシウム等のアルカリ土類金属塩、モノエタノールアミン,ジエタノールアミン,トリエタノールアミン等のエタノールアミン塩等が挙げられる。
上記N−ペンタデカノイルアラニン,N−ペンタデカノイルロイシン,N−ペンタデカノイルメチオニン,N−ペンタデカノイルバリン,N−ペンタデカノイルイソロイシン,N−ペンタデカノイルフェニルアラニン,N−ペンタデカノイルチロシン又はこれらの塩の本発明の化粧料中における配合量は使用目的、処方形態等に応じて適宜決定することができるが、通常は化粧料全体に対し0.01〜10重量%の範囲で使用することができる。配合量が0.01重量%未満であれば本発明の効果が得られない場合があり、また、10重量%を超える場合は効果がそれほど変わらないものの、経済性の観点から好ましくない。
本発明のN−アシルアミノ酸は、上記配合量で所望の効果を発揮できるばかりでなく、溶媒に対する溶解性に優れているため、製剤としたときに特に低温での溶解安定性が向上する。従って、製剤化する際に溶解性向上のために添加される可溶化剤あるいは分散剤などの添加剤の使用量を低減することができる。
【0007】
上記N−アシルアミノ酸は、例えば、奇数炭素数の高級脂肪酸クロリドとアミノ酸との縮合反応により合成することができる。具体的には、いわゆるショッテン・バウマン(Schotten・Baumann)反応、あるいは、「生化学」,第35巻,第2号,第67〜74頁(1963年)「リポアミノ酸の研究(I)」に記載の方法に準じて合成することができる。また、奇数炭素数の高級脂肪酸は、従来公知の方法により製造することができる。すなわち、例えば、対応する偶数炭素数のα−オレフィンからいわゆるオキソ法により合成することも可能であるし、また特開平6−253866号公報に記載される微生物を用いた方法により製造することもできる。
【0008】
本発明の化粧料は、上記N−ペンタデカノイルアラニン,N−ペンタデカノイルロイシン,N−ペンタデカノイルメチオニン,N−ペンタデカノイルバリン,N−ペンタデカノイルイソロイシン,N−ペンタデカノイルフェニルアラニン,N−ペンタデカノイルチロシン及びこれらの塩から選ばれる奇数炭素数アシル基を有するN−アシルアミノ酸の少なくとも一種に溶媒を適用して調製することができる。このような溶媒としては、上記化合物が溶解可能な溶媒であればいずれも使用しうる。従って、水も使用可能であるが、有機溶媒を使用する場合は親水性、親油性のいずれのものも使用でき、特に、皮膚との親和性などの点からアルコール類が好ましく使用できる。使用しうる溶媒としては、具体的には、メタノール,エタノール,プロピルアルコール,イソプロピルアルコール,グリセリン,プロピレングリコール,ポリエチレングリコール,n−パラフィン等が挙げられ、特にエタノールの場合に本発明の効果が著しい。
【0009】
本発明の化粧料には、主成分である上記N−アシルアミノ酸またはその塩に加えて、必要に応じてその他の成分を本発明の目的を阻害しない範囲で配合することができる。このような成分は、その用途,種類,剤型等に応じて適宜選択されるが、例えば蒸留水,アルコール類,多価アルコール類,界面活性剤,油脂類,多糖類などの基材や着色料、香料、ビタミン類、アミノ酸類、ホルモン類、血管拡張剤、抗炎症剤、角質溶解剤、殺菌剤、防腐剤などが適宜配合される。
また、化粧料の形態は用途に応じて液状,粉状,ペースト状など様々に調製することができ、育毛剤,養毛剤などに製品化される。
【0010】
【実施例】
以下に、本発明を実施例により更に具体的に説明するが、本発明はこれらの例によってなんら限定されるものではない。
製造例1
(1)塩化ペンタデカノイルの製造
1リットル二口フラスコに、ペンタデカン酸430.4g(1.78モル)を入れ、塩化チオニル258.1g(2.17モル)を入れた200ミリリットル滴下ロート及び還流管をセットした。当該フラスコをオイルバスで90℃に加熱攪拌しながら、ペンタデカン酸を完全に溶解させた後、2時間かけて塩化チオニルを滴下した。さらに、オイルバス温度を90℃に1時間保った。この反応混合物からアスピレーター減圧下、未反応塩化チオニルを除去し、得られた反応粗製物を減圧蒸留して塩化ペンタデカノイル429.7g(1.65モル)を得た。仕込んだペンタデカン酸基準の収率は93%であった。
【0011】
(2)N−ペンタデカノイル−L−アラニンの合成
1リットル三口フラスコに、L−アラニン40g(0.45モル)と、水酸化ナトリウム18.0g(0.45モル)を水600ミリリットルに溶解した水溶液とを加え攪拌した。アラニンが溶解した後アセトン400ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル117.1g(0.45モル)と、水酸化ナトリウム18.0g(0.45モル)を水120ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−アラニンナトリウム溶液を得た。その溶液に5N塩酸90ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン600ミリリットルで洗浄、乾燥後、エタノール:水=7:3溶媒で再結晶させ、N−ペンタデカノイル−L−アラニン86.4g(0.28モル)を得た。仕込んだ塩化ペンタデカノイル基準の収率は62%であった。
【0012】
製造例2
N−ペンタデカノイル−L−ロイシンの合成
1リットル三口フラスコに、L−ロイシン50g(0.38モル)と、水酸化ナトリウム15.3g(0.38モル)を水600ミリリットルに溶解した水溶液とを加え攪拌した。ロイシンが溶解した後アセトン400ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル99.4g(0.38モル)と、水酸化ナトリウム15.3g(0.38モル)を水100ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−ロイシンナトリウム溶液を得た。その溶液に5N塩酸76ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン600ミリリットルで洗浄、乾燥後、酢酸エチルで再結晶させ、N−ペンタデカノイル−L−ロイシン36.3g(0.10モル)を得た。仕込んだ塩化ペンタデカノイル基準の収率は27%であった。
【0013】
製造例3
N−ペンタデカノイル−L−メチオニンの合成
1リットル三口フラスコに、L−メチオニン50g(0.34モル)と、水酸化ナトリウム13.4g(0.34モル)を水600ミリリットルに溶解した水溶液とを加え攪拌した。メチオニンが溶解した後アセトン400ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル87.4g(0.34モル)と、水酸化ナトリウム13.4g(0.34モル)を水90ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−メチオニンナトリウム溶液を得た。その溶液に5N塩酸68ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン600ミリリットルで洗浄、乾燥後、メタノール:水=8:2溶媒で再結晶させ、N−ペンタデカノイル−L−メチオニン91.2g(0.24モル)を得た。仕込んだ塩化ペンタデカノイル基準の収率は72%であった。
【0014】
製造例4
N−ペンタデカノイル−L−バリンの合成
1リットル三口フラスコに、L−バリン40g(0.34モル)と、水酸化ナトリウム13.7g(0.34モル)を水600ミリリットルに溶解した水溶液とを加え攪拌した。バリンが溶解した後アセトン400ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル89.0g(0.34モル)と、水酸化ナトリウム13.7g(0.34モル)を水90ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−バリンナトリウム溶液を得た。その溶液に5N塩酸68ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン600ミリリットルで洗浄、乾燥後、エタノール:水=8:2溶媒で再結晶させ、N−ペンタデカノイル−L−バリン71.3gを得た。仕込んだ塩化ペンタデカノイル基準の収率は61%であった。
【0015】
製造例5
N−ペンタデカノイル−L−イソロイシンの合成
1リットル三口フラスコに、L−イソロイシン40g(0.30モル)と、水酸化ナトリウム12.0g(0.30モル)を水600ミリリットルに溶解した水溶液とを加え攪拌した。イソロイシンが溶解した後アセトン400ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル79.5g(0.30モル)と、水酸化ナトリウム12.2g(0.30モル)を水120ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−イソロイシンナトリウム溶液を得た。その溶液に5N塩酸61ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン600ミリリットルで洗浄、乾燥後、エタノール:水=8:2溶媒で再結晶させ、N−ペンタデカノイル−L−イソロイシン63.8g(0.18モル)を得た。仕込んだ塩化ペンタデカノイル基準の収率は60%であった。
【0016】
製造例6
N−ペンタデカノイル−L−フェニルアラニンの合成
1リットル三口フラスコに、L−フェニルアラニン40g(0.24モル)と、水酸化ナトリウム9.7g(0.24モル)を水600ミリリットルに溶解した水溶液とを加え攪拌した。フェニルアラニンが溶解した後アセトン400ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル63.2g(0.24モル)と、水酸化ナトリウム9.7g(0.24モル)を水65ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−フェニルアラニンナトリウム溶液を得た。その溶液に5N塩酸48ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン600ミリリットルで洗浄、乾燥後、酢酸エチルで再結晶させ、N−ペンタデカノイル−L−フェニルアラニン38.6gを得た。仕込んだ塩化ペンタデカノイル基準の収率は41%であった。
【0017】
製造例7
N−ペンタデカノイル−L−チロシンの合成
1リットル三口フラスコに、L−チロシン54.4g(0.3モル)と、水酸化ナトリウム24g(0.6モル)を水300ミリリットルに溶解した水溶液とを加え攪拌した。チロシンが溶解した後アセトン200ミリリットルを加えた。反応液を0℃に冷却し、塩化ペンタデカノイル52.2g(0.2モル)と、水酸化ナトリウム8g(0.2モル)を水50ミリリットルに溶解した水溶液を同時に1時間かけて滴下した。その間、反応温度を0℃、pHを11〜12に保った。その後、温度を0℃に1時間保ちながら攪拌し、N−ペンタデカノイル−L−チロシンナトリウム溶液を得た。その溶液に5N塩酸200ミリリットルを加え、溶液のpHを1とし、析出した結晶を減圧ろ過により分離し、水で洗浄後、減圧下乾燥した。得られた結晶をヘキサン300ミリリットルで洗浄、乾燥後、エタノール:水=8:2溶媒で再結晶させ、N−ペンタデカノイル−L−チロシン52.8gを得た。仕込んだ塩化ペンタデカノイル基準の収率は65%であった。
【0018】
実施例1〜7及び比較例1
8週令のC3H系マウスの雄(体重18〜24g)を8匹1群として、背部約2×3.5cmを除毛し、除毛した背部に、第1表に示すN−アシルアミノ酸化合物の1重量%エタノール溶液を被験サンプルとし、1日1回、0.1ミリリットルを3週間に渡り塗布し、育毛の状態を観察した。育毛効果の評価は、エタノールのみを塗布した場合に比べ下記の基準に従い目視にて評価した。結果を第1表に示す。なお、試験期間中、一般症状,皮膚状態及び体重推移に対しては、被験サンプルの塗布によって何ら影響は認められなかった。
◎ 再発毛早く、きわめて良好に毛生え。
〇 再発毛早く、良好に毛生え。
△ 再発毛遅く、多少毛生え。
また、上記N−アシルアミノ酸化合物を、10℃で70%エタノールに溶解した際の溶解度を調べた。結果を第1表に示す。
なお、ここで使用したN−アシルアミノ酸化合物は上記製造例1〜7あるいはこれに準じて合成したものを使用した。
【0019】
【表1】

Figure 0003569448
【0020】
更に、本発明の実施例として、本発明の化粧料の種々の形態をその組成とともに以下に示す。
Figure 0003569448
【0021】
Figure 0003569448
【0022】
Figure 0003569448
【0023】
Figure 0003569448
【0024】
Figure 0003569448
【0025】
Figure 0003569448
【0026】
【発明の効果】
本発明によればN−ペンタデカノイルアラニン,N−ペンタデカノイルロイシン,N−ペンタデカノイルメチオニン,N−ペンタデカノイルバリン,N−ペンタデカノイルイソロイシン,N−ペンタデカノイルフェニルアラニン及びN−ペンタデカノイルチロシンから選ばれるN−アシルアミノ酸又はこれらの塩は、化粧料を調製する際の溶媒に対する溶解度が著しく優れ、これを有効成分とすることにより、優れた育毛促進効果、保湿作用、皮下血流量増進作用等を有する育毛用、皮膚用などに好適な化粧料を得ることができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cosmetic such as a hair restorer, a hair restorer, etc., and in particular, a cosmetic having a superior hair growth promoting effect, a moisturizing effect, a subcutaneous blood flow increasing effect, etc., suitable for hair growth, skin use, and the like, and a preparation of the cosmetic. The present invention relates to an N-acylamino acid which is an active ingredient of the above-mentioned cosmetics, which is extremely excellent in solubility in a solvent during preparation.
[0002]
[Prior art]
BACKGROUND ART Conventionally, cosmetics containing various medicinal agents have been known. For example, in a hair restorer, such medicinal agents include vitamins such as vitamin E, amino acids such as serine and methionine, vasodilators such as acetylcholine derivatives, anti-inflammatory agents such as purple root extract, and female hormones such as elastdiol. Agents, a skin function enhancer such as cepharanthin, a melanin synthesis catalyst such as copper pantothenate, a keratolytic agent such as salicylic acid, and the like, are used for preventing and treating alopecia.
As an example in which a fatty acid or a derivative thereof is blended in a cosmetic such as a hair restorer, there is known an example in which a natural vegetable oil such as olive oil or castor oil or stearic acid is blended for the purpose of improving the physical properties of a product. Fatty acids constituting various naturally occurring lipids such as vegetable oils and animal oils are saturated fatty acids such as stearic acid and palmitic acid, and unsaturated fatty acids such as oleic acid and linoleic acid. It is known that the fatty acid has a chain.
On the other hand, as an example in which a fatty acid having an odd number of carbon atoms or a derivative thereof is blended into hair cosmetics, there are, for example, compounds described in JP-B-63-41363 and JP-A-8-337515.
[0003]
[Problems to be solved by the invention]
However, cosmetics such as the above-mentioned conventional hair restorer, particularly the cosmetic described in JP-A-8-337515 are effective for preventing and improving, for example, dandruff, Kayumi, hair removal, and promote hair growth and hair growth. However, when the N-acyl amino acid as an active ingredient is dissolved in a solvent such as ethanol to prepare the same, the solubility is not sufficient and the performance of the hair restorer or the like is hindered. In particular, improvement in solubility at low temperatures has been desired.
The present invention has been made under such circumstances, and has an excellent hair-growth promoting effect, a moisturizing effect, a hair-growth having a subcutaneous blood flow-enhancing effect, and the like, a cosmetic suitable for skin, and a solvent used therefor. An object of the present invention is to provide an N-acyl amino acid having extremely excellent solubility.
[0004]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to achieve the above object, and as a result, in cosmetics, a specific acylamino acid having a pentadecanoyl group or a salt thereof is remarkably excellent in the above-mentioned solubility, and is used as an active ingredient. It has been found that the use thereof has excellent hair growth promoting effect, moisturizing effect, subcutaneous blood flow increasing effect and the like. The present invention has been completed based on such findings.
That is, the present invention relates to N-pentadecanoylalanine, N-pentadecanoylleucine, N-pentadecanoylmethionine, N-pentadecanoylvaline, N-pentadecanoylisoleucine, N-pentadecanoylphenylalanine and N-pentane. An N-acyl amino acid selected from decanoyl tyrosine or a salt thereof, and a cosmetic comprising at least one of these N-acyl amino acids and a salt thereof as an active ingredient.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in more detail.
The present invention relates to a specific N-acyl amino acid having a pentadecanoyl group or a salt thereof, and a cosmetic containing the same as an active ingredient, wherein the specific N-acyl amino acid is an amino acid in the amino acid. N-pentadecanoylalanine, N-pentadecanoylleucine, N-pentadecanoylmethionine, N-pentadecanoylvaline, N-pentadeca, wherein at least one of the groups is acylated by a pentadecanoyl group. Noyl isoleucine, N-pentadecanoyl phenylalanine and N-pentadecanoyl tyrosine.
[0006]
Examples of the salt of the N-acyl amino acid include alkali metal salts such as sodium and potassium, alkaline earth metal salts such as calcium, and ethanolamine salts such as monoethanolamine, diethanolamine and triethanolamine.
N-pentadecanoylalanine, N-pentadecanoylleucine, N-pentadecanoylmethionine, N-pentadecanoylvaline, N-pentadecanoylisoleucine, N-pentadecanoylphenylalanine, N-pentadecanoyltyrosine or The amount of these salts in the cosmetic of the present invention can be appropriately determined according to the purpose of use, the form of formulation, and the like, but is usually used in the range of 0.01 to 10% by weight based on the total cosmetic. be able to. If the amount is less than 0.01% by weight, the effect of the present invention may not be obtained. If the amount exceeds 10% by weight, the effect is not so much changed, but it is not preferable from the viewpoint of economy.
The N-acylamino acids of the present invention not only exhibit the desired effects in the above-mentioned amounts, but also have excellent solubility in a solvent, and therefore, when formulated, the dissolution stability particularly at low temperatures is improved. Therefore, it is possible to reduce the amount of additives such as a solubilizer or a dispersing agent added for improving the solubility during formulation.
[0007]
The N-acyl amino acid can be synthesized, for example, by a condensation reaction between a higher fatty acid chloride having an odd carbon number and an amino acid. Specifically, the so-called Schotten-Baumann reaction or "Biochemistry", Vol. 35, No. 2, pp. 67-74 (1963), "Research on lipoamino acids (I)". It can be synthesized according to the method described. The higher fatty acid having an odd carbon number can be produced by a conventionally known method. That is, for example, it can be synthesized from the corresponding α-olefin having an even number of carbon atoms by a so-called oxo method, or can be produced by a method using a microorganism described in JP-A-6-253866. .
[0008]
The cosmetic composition of the present invention includes the above-mentioned N-pentadecanoylalanine, N-pentadecanoylleucine, N-pentadecanoylmethionine, N-pentadecanoylvaline, N-pentadecanoylisoleucine, N-pentadecanoylphenylalanine, It can be prepared by applying a solvent to at least one of N-acylamino acids having an odd-numbered carbon acyl group selected from N-pentadecanoyltyrosine and salts thereof. As such a solvent, any solvent can be used as long as the compound can dissolve the compound. Accordingly, water can be used, but when an organic solvent is used, either hydrophilic or lipophilic one can be used, and alcohols can be preferably used from the viewpoint of affinity with the skin. Specific examples of usable solvents include methanol, ethanol, propyl alcohol, isopropyl alcohol, glycerin, propylene glycol, polyethylene glycol, n-paraffin and the like. Particularly, in the case of ethanol, the effect of the present invention is remarkable.
[0009]
In the cosmetic of the present invention, in addition to the above-mentioned N-acylamino acid or a salt thereof as a main component, other components can be blended, if necessary, as long as the object of the present invention is not impaired. Such components are appropriately selected according to the use, kind, dosage form, etc., for example, a base material such as distilled water, alcohols, polyhydric alcohols, surfactants, fats and oils, polysaccharides, and the like. Ingredients, flavors, vitamins, amino acids, hormones, vasodilators, anti-inflammatory agents, keratolytic agents, bactericides, preservatives, and the like are appropriately compounded.
In addition, the form of the cosmetic can be variously prepared such as liquid, powder, paste, etc. depending on the use, and is commercialized as a hair restorer, a hair restorer and the like.
[0010]
【Example】
Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.
Production Example 1
(1) Production of pentadecanoyl chloride A 200-ml dropping funnel containing 430.4 g (1.78 mol) of pentadecanoic acid and 258.1 g (2.17 mol) of thionyl chloride was placed in a 1-liter two-necked flask and refluxed. The tube was set. While heating and stirring the flask at 90 ° C. in an oil bath, pentadecanoic acid was completely dissolved, and then thionyl chloride was added dropwise over 2 hours. Further, the oil bath temperature was kept at 90 ° C. for 1 hour. Unreacted thionyl chloride was removed from the reaction mixture under aspirator pressure reduction, and the resulting crude reaction product was distilled under reduced pressure to obtain 429.7 g (1.65 mol) of pentadecanoyl chloride. The yield based on the charged pentadecanoic acid was 93%.
[0011]
(2) Synthesis of N-pentadecanoyl-L-alanine In a 1-liter three-necked flask, 40 g (0.45 mol) of L-alanine and 18.0 g (0.45 mol) of sodium hydroxide were dissolved in 600 ml of water. The resulting aqueous solution was added and stirred. After the alanine was dissolved, 400 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 117.1 g (0.45 mol) of pentadecanoyl chloride and 18.0 g (0.45 mol) of sodium hydroxide were dissolved in 120 ml of water was simultaneously added over 1 hour. It was dropped. Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour to obtain a sodium N-pentadecanoyl-L-alanine solution. 90 mL of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water, and dried under reduced pressure. The obtained crystals were washed with 600 ml of hexane and dried, and then recrystallized with a 7: 3 solvent of ethanol: water to obtain 86.4 g (0.28 mol) of N-pentadecanoyl-L-alanine. The yield based on the pentadecanoyl chloride charged was 62%.
[0012]
Production Example 2
Synthesis of N-pentadecanoyl-L-leucine In a 1-liter three-necked flask, an aqueous solution obtained by dissolving 50 g (0.38 mol) of L-leucine and 15.3 g (0.38 mol) of sodium hydroxide in 600 ml of water was prepared. Was added and stirred. After the leucine was dissolved, 400 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 99.4 g (0.38 mol) of pentadecanoyl chloride and 15.3 g (0.38 mol) of sodium hydroxide were dissolved in 100 ml of water was simultaneously added over 1 hour. It was dropped. Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour to obtain a sodium N-pentadecanoyl-L-leucine solution. 76 mL of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water, and dried under reduced pressure. The obtained crystals were washed with 600 ml of hexane, dried, and recrystallized from ethyl acetate to obtain 36.3 g (0.10 mol) of N-pentadecanoyl-L-leucine. The yield based on the charged pentadecanoyl chloride was 27%.
[0013]
Production Example 3
Synthesis of N-pentadecanoyl-L-methionine In a 1-liter three-necked flask, 50 g (0.34 mol) of L-methionine and an aqueous solution obtained by dissolving 13.4 g (0.34 mol) of sodium hydroxide in 600 ml of water were prepared. Was added and stirred. After methionine was dissolved, 400 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 87.4 g (0.34 mol) of pentadecanoyl chloride and 13.4 g (0.34 mol) of sodium hydroxide were dissolved in 90 ml of water was simultaneously added over 1 hour. It was dropped. Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour to obtain a sodium N-pentadecanoyl-L-methionine solution. 68 mL of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water, and dried under reduced pressure. The obtained crystals were washed with 600 ml of hexane, dried and then recrystallized with a methanol: water = 8: 2 solvent to obtain 91.2 g (0.24 mol) of N-pentadecanoyl-L-methionine. The yield based on the charged pentadecanoyl chloride was 72%.
[0014]
Production Example 4
Synthesis of N-pentadecanoyl-L-valine In a 1-liter three-necked flask, an aqueous solution prepared by dissolving 40 g (0.34 mol) of L-valine and 13.7 g (0.34 mol) of sodium hydroxide in 600 ml of water was used. Was added and stirred. After valine was dissolved, 400 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 89.0 g (0.34 mol) of pentadecanoyl chloride and 13.7 g (0.34 mol) of sodium hydroxide were dissolved in 90 ml of water was simultaneously added over 1 hour. It was dropped. Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour to obtain a solution of sodium N-pentadecanoyl-L-valine. 68 mL of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water, and dried under reduced pressure. The obtained crystals were washed with 600 ml of hexane, dried, and then recrystallized with a solvent of ethanol: water = 8: 2 to obtain 71.3 g of N-pentadecanoyl-L-valine. The yield based on the charged pentadecanoyl chloride was 61%.
[0015]
Production Example 5
Synthesis of N-pentadecanoyl-L-isoleucine In a 1-liter three-necked flask, 40 g (0.30 mol) of L-isoleucine and an aqueous solution obtained by dissolving 12.0 g (0.30 mol) of sodium hydroxide in 600 ml of water were prepared. Was added and stirred. After the isoleucine was dissolved, 400 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 79.5 g (0.30 mol) of pentadecanoyl chloride and 12.2 g (0.30 mol) of sodium hydroxide were dissolved in 120 ml of water was simultaneously added over 1 hour. It was dropped. Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour to obtain a sodium N-pentadecanoyl-L-isoleucine solution. 61 mL of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water, and dried under reduced pressure. The obtained crystals were washed with 600 ml of hexane, dried and then recrystallized with a solvent of ethanol: water = 8: 2 to obtain 63.8 g (0.18 mol) of N-pentadecanoyl-L-isoleucine. The yield based on the charged pentadecanoyl chloride was 60%.
[0016]
Production Example 6
Synthesis of N-pentadecanoyl-L-phenylalanine In a 1-liter three-necked flask, 40 g (0.24 mol) of L-phenylalanine and an aqueous solution obtained by dissolving 9.7 g (0.24 mol) of sodium hydroxide in 600 ml of water were prepared. Was added and stirred. After the phenylalanine was dissolved, 400 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 63.2 g (0.24 mol) of pentadecanoyl chloride and 9.7 g (0.24 mol) of sodium hydroxide were dissolved in 65 ml of water was simultaneously added over 1 hour. It was dropped. Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour to obtain a sodium N-pentadecanoyl-L-phenylalanine solution. 48 ml of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water and dried under reduced pressure. The obtained crystals were washed with 600 ml of hexane, dried and then recrystallized from ethyl acetate to obtain 38.6 g of N-pentadecanoyl-L-phenylalanine. The yield based on the charged pentadecanoyl chloride was 41%.
[0017]
Production Example 7
Synthesis of N-pentadecanoyl-L-tyrosine In a 1-liter three-necked flask, 54.4 g (0.3 mol) of L-tyrosine and an aqueous solution obtained by dissolving 24 g (0.6 mol) of sodium hydroxide in 300 ml of water were prepared. Was added and stirred. After the tyrosine was dissolved, 200 ml of acetone was added. The reaction solution was cooled to 0 ° C., and an aqueous solution in which 52.2 g (0.2 mol) of pentadecanoyl chloride and 8 g (0.2 mol) of sodium hydroxide were dissolved in 50 ml of water was simultaneously added dropwise over 1 hour. . Meanwhile, the reaction temperature was kept at 0 ° C. and the pH was kept at 11-12. Thereafter, the mixture was stirred while maintaining the temperature at 0 ° C. for 1 hour, to obtain a sodium N-pentadecanoyl-L-tyrosine solution. 200 mL of 5N hydrochloric acid was added to the solution to adjust the pH of the solution to 1, and the precipitated crystals were separated by filtration under reduced pressure, washed with water, and dried under reduced pressure. The obtained crystals were washed with 300 ml of hexane, dried, and then recrystallized with a solvent of ethanol: water = 8: 2 to obtain 52.8 g of N-pentadecanoyl-L-tyrosine. The yield based on the pentadecanoyl chloride charged was 65%.
[0018]
Examples 1 to 7 and Comparative Example 1
Eight-week-old male C3H mice (body weight: 18 to 24 g) were grouped in groups of eight to remove the hair of about 2 × 3.5 cm from the back, and the N-acylamino acid compound shown in Table 1 was placed on the back after the hair was removed. A 1% by weight ethanol solution was used as a test sample, and 0.1 ml was applied once a day for 3 weeks to observe the condition of hair growth. The evaluation of the hair growth effect was visually evaluated according to the following criteria, compared with the case where only ethanol was applied. The results are shown in Table 1. During the test period, application of the test sample did not affect the general symptoms, skin condition, and changes in body weight.
◎ Hair regrows quickly and grows very well.
再 発 Hair regrowth quickly and well.
△ Hair recurrence is late and hair grows somewhat.
The solubility of the N-acylamino acid compound in 70% ethanol at 10 ° C. was examined. The results are shown in Table 1.
The N-acylamino acid compounds used here were the above-mentioned Production Examples 1 to 7 or those synthesized according to them.
[0019]
[Table 1]
Figure 0003569448
[0020]
Further, as examples of the present invention, various forms of the cosmetic of the present invention are shown below together with their compositions.
Figure 0003569448
[0021]
Figure 0003569448
[0022]
Figure 0003569448
[0023]
Figure 0003569448
[0024]
Figure 0003569448
[0025]
Figure 0003569448
[0026]
【The invention's effect】
According to the invention, N-pentadecanoylalanine, N-pentadecanoylleucine, N-pentadecanoylmethionine, N-pentadecanoylvaline, N-pentadecanoylisoleucine, N-pentadecanoylphenylalanine and N-pentane N-acylamino acids selected from decanoyl tyrosine or salts thereof have remarkably excellent solubility in solvents when preparing cosmetics, and by using this as an active ingredient, an excellent hair growth promoting effect, a moisturizing effect, and a subcutaneous blood. It is possible to obtain a cosmetic suitable for hair growth, skin, etc., having a flow rate increasing action and the like.

Claims (2)

N−ペンタデカノイルバリン,N−ペンタデカノイルイソロイシン及びN−ペンタデカノイルフェニルアラニン及びこれらの塩から選ばれる少なくとも一種を有効成分とし、エタノールを含む溶媒を含有する育毛剤 A hair restorer comprising, as an active ingredient, at least one selected from N-pentadecanoyl valine, N-pentadecanoyl isoleucine, N-pentadecanoyl phenylalanine and salts thereof , and a solvent containing ethanol . N−ペンタデカノイルアラニン,N−ペンタデカノイルメチオニン,N−ペンタデカノイルフェニルアラニン及びN−ペンタデカノイルチロシンから選ばれるN−アシルアミノ酸又はその塩。 An N -acyl amino acid selected from N-pentadecanoylalanine, N-pentadecanoylmethionine, N-pentadecanoylphenylalanine and N-pentadecanoyltyrosine, or a salt thereof.
JP19415298A 1997-07-14 1998-07-09 N-acyl amino acid and cosmetic using the same Expired - Fee Related JP3569448B2 (en)

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