JP2018510167A - フィトスフィンゴシン誘導体及びこれを含む組成物 - Google Patents
フィトスフィンゴシン誘導体及びこれを含む組成物 Download PDFInfo
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- JP2018510167A JP2018510167A JP2017549745A JP2017549745A JP2018510167A JP 2018510167 A JP2018510167 A JP 2018510167A JP 2017549745 A JP2017549745 A JP 2017549745A JP 2017549745 A JP2017549745 A JP 2017549745A JP 2018510167 A JP2018510167 A JP 2018510167A
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- Prior art keywords
- phytosphingosine
- phytosphingosine derivative
- derivative
- present
- condensation reaction
- 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.)
- Granted
Links
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- AERBNCYCJBRYDG-KSZLIROESA-N phytosphingosine Chemical compound CCCCCCCCCCCCCC[C@@H](O)[C@@H](O)[C@@H](N)CO AERBNCYCJBRYDG-KSZLIROESA-N 0.000 claims abstract description 42
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Abstract
Description
本発明者らは、このような問題点を解決するために多様に研究してきた結果、フィトスフィンゴシンとアルドース系二糖類であるマルトース(Maltose)またはラクトース(Lactose)を使ってフィトスフィンゴシン誘導体を合成する場合、フィトスフィンゴシンの水中溶解度の短所を補い、抗菌効果が優れていて、これを含む組成物が細菌性皮膚疾患、炎症性皮膚疾患、ひいては自己免疫疾患の改善及び予防機能にさらに優れた機能を表すことを確認し、本発明を完成した。
水中溶解度を高めるための方案として、酸成分を利用してフィトスフィンゴシンをアンモニウム塩の形態に切り替える方法があるが、この方法はフィトスフィンゴシンの抗菌効果を減少させており、他の方案で特定のオイル成分を利用してフィトスフィンゴシンを高温で溶解させた後で剤形化する方法があるが、この方法は使用感の問題と室温保存時の剤形内の析出のおそれがある。
本発明の抗菌性、皮膚疾患改善用皮膚外用剤組成物によれば、アトピー性皮膚炎、疥、手足乾癬、斑状少水疱性白癬、各種湿疹、悪性にきび、皮膚痒み、帯状疱疹、乾癬、慢性皮膚そう痒、掌しょ膿疱症、真菌性水虫、悪性腫脹等の各種疾患を持っている皮膚の疾患部位を正常皮膚に改善させる効果がある。
本発明で使われる用語「誘導体(Derivative)」とは、通常、とある化合物の一部を化学的に変化させて得られる化合物であって、普通は化合物の中の水素原子または特定原子団が他の原子または原子団によって置換された化合物を言う。本発明の「フィトスフィンゴシン誘導体」は、下記<化学式A>の構造を有するフィトスフィンゴシンと、<化学式B>、<化学式C>の構造を有するアルドース系二糖類のマルトースまたはラクトースが化学的に結合して次の<化学式I>または<化学式II>の構造を有する物質を意味する。本発明における「アルドース系二糖類」とは、2個のアルドース単糖類が結合した二糖類であり、代表的なアルドース系6炭糖としてグルコース(Glucose)2分子が結合したマルトースと、グルコース1分子とガラクトース(Galactose)1分子が結合したラクトースを適用した。
化学式A フィトスフィンゴシン
化学式B マルトース
化学式C ラクトース
化学式I
化学式II
皮膚外用剤の基材として使用する場合、本発明の配合割合は特に限定されず、皮膚外用剤の形態、効能などによって適切に選択することができるし、他の皮膚外用基材を使って適当な剤形、例えば、液状、ゲル状、ペースト状、クリーム状、粉末状、固体状などに剤形化することができる。
フィトスフィンゴシン3.17g、マルトース一水和物(Maltose monohydrate)3.78g及び酢酸(Acetic acid)30μlをメタノール(Me-OH)40mlに入れて逆流(reflux)させ、12時間反応させた。反応が終わった後、溶液を常温に冷却し、アセトン(Acetone)を添加して生成物を析出した。析出したフィトスフィンゴシン誘導体を濾過して乾燥した。
1H NMR (300MHz, D2O) δ: 0.89 (3H), 1.10〜1.50 (26H), 2.90〜3.20 (4H), 3.25〜4.20 (14H), 4.66 & 5.20〜5.45 (1H)
マルトース一水和物の代わりにラクトース一水和物(Lactose monohydrate)を利用したことを除いて、上記実施例1の同じ方法でフィトスフィンゴシン誘導体を製造した。
1H NMR (300MHz, D2O) δ: 0.89 (3H), 1.10〜1.50 (26H), 2.90〜3.20 (4H), 3.25〜4.20 (14H), 4.66 & 5.20〜5.45 (1H)
50〜60℃の蒸溜水に上記実施例1及び実施例2で得られたフィトスフィンゴシン誘導体をそれぞれ全水溶液重量に対して0.1重量%及び1.0重量%で溶解させた後、常温に置いて時間による析出を観察した。比較例としてフィトスフィンゴシンを利用して同様に試験を行い、表1にその結果を示す。
○:析出されない
△:目立って析出されることはないが、微細な粒子が生成される
×:目立って析出される
上記表1を見れば、比較例であるフィトスフィンゴシンに比べて本発明のフィトスフィンゴシン誘導体の水中溶解度が増大し、長期間保管しても析出されない点から水中安定度も優秀であることが分かる。
(1)試験菌液準備
皮膚疾患を誘発する代表的微生物(真菌、細菌)として、マラセチアグロボーサ(Malassezia globosa)、マラセチアレストリクタ(Malassezia restricta)、カンジダアルビカンス(C.albicans)、アスペルギルスニガ(A.niger)、エンテロコッカスフェカーリス(Enterococcus faecalis)、ブレブンディモナスベシクラリス(Brevundimonas vesicularis)の6種をそれぞれピチロスポルムオバーレ(P.ovale)培地に接種して32℃で3日間培養し、培養液をP.ovaleで1.0×107CFU/ml希釈したものを試験菌液として使用した。
P.ovale培地に上記実施例1で製造されたフィトスフィンゴシン誘導体、及び比較例としてフィトスフィンゴシン0.8%を懸濁した懸濁液を試料溶液として使った。
(1)96ウェルプレートの第1行目に(2)の試料溶液を200μlずつ入れた。残りウェルにはP.ovaleを100μlずつを入れた。
(2)上記第1行目の混合液をよく混ぜた後、100μlを取って第2行目に入れてよく混ぜた後、再び100μlを取って第3行目に入れる方式により、二重希釈(double dilution)をした。
(3)32〜48時間培養した後、懸濁された程度で菌の増殖有無を判断し、菌が増殖していない最小濃度をMIC(Minimum Inhibitory Concentration)値と決めた。混合液が不透明で菌の増殖有無を判断しにくい場合、顕微鏡で観察した。
テスト結果を表2に示す。
Claims (9)
- 上記フィトスフィンゴシン誘導体は、フィトスフィンゴシンとマルトースの縮合反応の生成物であることを特徴とする請求項1に記載のフィトスフィンゴシン誘導体。
- 上記フィトスフィンゴシン誘導体は、フィトスフィンゴシンとラクトースの縮合反応の生成物であることを特徴とする請求項2に記載のフィトスフィンゴシン誘導体。
- 請求項1ないし請求項4のいずれか一項に記載のフィトスフィンゴシン誘導体またはその薬剤学的に許容される塩を有効成分として含む抗菌性組成物。
- 請求項1ないし請求項4のいずれか一項に記載のフィトスフィンゴシン誘導体またはその薬剤学的に許容される塩を有効成分として含む皮膚疾患改善用皮膚外用剤組成物。
- アルドース系二糖類が結合されたフィトスフィンゴシン誘導体の製造方法において、
フィトスフィンゴシンとアルドース系二糖類を1:0.8ないし1:1.2のモル比で縮合反応させ、
上記アルドース系二糖類は、マルトースまたはラクトースであることを特徴とするフィトスフィンゴシン誘導体の製造方法。 - 上記縮合反応は、酸触媒下で進められることを特徴とする請求項7に記載のフィトスフィンゴシン誘導体製造方法。
- 上記縮合反応は、塩基触媒下で進められることを特徴とする請求項7に記載のフィトスフィンゴシン誘導体製造方法。
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KR20030014780A (ko) * | 2001-08-13 | 2003-02-20 | 주식회사 참 존 | 항암활성을 가지는 파이토스핑고신 유도체 |
KR20020042606A (ko) * | 2002-05-20 | 2002-06-05 | 장인순 | 엔-아세틸 파이토스핑고신과 다이메틸 파이토스핑고신을유효 성분으로 포함하는 방사선 치료 민감제 조성물 |
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KR20140097263A (ko) * | 2011-12-02 | 2014-08-06 | 주식회사 엘씨에스바이오텍 | 신규 파이토스핑고신 유도체 및 그 제조방법 |
KR20130094547A (ko) * | 2012-02-16 | 2013-08-26 | 주식회사 피토스 | 신규한 파이토스핑고신-1-포스페이트 유도체, 그 제조방법, 및 그것을 포함하는 탈모의 예방, 치료, 또는 육모용 조성물 |
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US20180116939A1 (en) | 2018-05-03 |
EP3279205B1 (en) | 2019-05-08 |
KR102299509B1 (ko) | 2021-09-07 |
EP3279205A4 (en) | 2018-02-21 |
CN107567457A (zh) | 2018-01-09 |
JP6691923B2 (ja) | 2020-05-13 |
KR20160116690A (ko) | 2016-10-10 |
WO2016159537A1 (ko) | 2016-10-06 |
EP3279205A1 (en) | 2018-02-07 |
CN107567457B (zh) | 2020-07-03 |
US10172777B2 (en) | 2019-01-08 |
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