JP2007182438A - 点眼用組成物 - Google Patents
点眼用組成物 Download PDFInfo
- Publication number
- JP2007182438A JP2007182438A JP2006330084A JP2006330084A JP2007182438A JP 2007182438 A JP2007182438 A JP 2007182438A JP 2006330084 A JP2006330084 A JP 2006330084A JP 2006330084 A JP2006330084 A JP 2006330084A JP 2007182438 A JP2007182438 A JP 2007182438A
- Authority
- JP
- Japan
- Prior art keywords
- salt
- methyl
- isoquinolinesulfonyl
- fluoro
- homopiperazine
- 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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Abstract
【解決手段】(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジン若しくはその塩又はそれらの溶媒和物、リン酸又はその塩及びグリセリンを含有する点眼用組成物。
【選択図】なし
Description
強されることを見出し先に特許出願した(米国特許願第60/638118号)。そして、さらにその点眼用製剤について検討した結果、斯かる成分に、グリセリンを配合することにより、(S)−(−)−1−(4−フルオロ−5−イソキノリンスルホニル)−2−メチル−1,4−ホモピペラジン若しくはその塩の結晶が析出することが殆どない、安定な点眼用組成物が得られることを見出した。
(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジンは、Rhoキナーゼ阻害作用の他にサブスタンスP拮抗作用及びロイコトリエンD4拮抗作用を有する公知の化合物であり(特開平11−349482号公報)、公知の方法、例えば、国際特許公開第99/20620号パンフレット(特許文献1)に記載の方法により製造することができる。
和物としても存在することができ、本発明においては、全ての結晶型及び水和若しくは溶媒和物を含むものである。
グリセリンは、点眼剤として使用できる純度のものを使用すればよく、例えば市販のグリセリン(阪本薬品工業(株)製)を用いることができる。また、グリセリンに替えて濃グリセリンを同濃度となるように使用することもでき、例えば市販の濃グリセリン(阪本薬品工業(株)製、他)を用いることができる。
しく、5.5〜8がより好ましく、5.5〜7であるのが特に好ましい。浸透圧は、好ましくは200〜700mOsm、より好ましくは200〜600mOsmであり、生理食塩水に対する浸透圧比は好ましくは0.6〜3、より好ましくは0.6〜2である。pH及び浸透圧をこの範囲内とすることにより、適用時に目に刺激を与えない製剤とすることができる。
ジン薬、炭酸脱水素酵素阻害薬、高張浸透圧薬、ムスカリン作動薬、コリンエステラーゼ阻害薬、グルタメート拮抗薬等が挙げられる。
以下、本発明を更に詳しく説明するが、本発明はこれらに限定されるものではない。
(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジンハイドロクロライド1.1g、無水リン酸二水素ナトリウム(太平化学産業(株)製)0.4g、グリセリン(阪本薬品工業(株)製)1.96gに精製水を50g加え攪拌し、完全に溶解させ、精製水に溶解した水酸化ナトリウムを添加してpHを6.0とし、更に精製水を加えて全量を100mLとし、点眼剤を調製した。なお浸透圧は300mОsm/Kgであった。
pHを6.5として、実施例1と同様に調整した。なお浸透圧は305Osm/Kgであった。
グリセリン1.96gを塩化ナトリウム(塩化ナトリウム:富田製薬(株)製)0.65gとして、実施例1と同様に調製した。なお浸透圧は310mОsm/Kgであった。
グリセリン1.96gをグルコース(日食メディカロース:日本食品化工(株)製)1.81gとして、実施例1と同様に調製した。なお浸透圧は299mОsm/Kgであった。
グリセリン1.96gをフルクトース(フルクトース:和光純薬(株)製)1.81gとして、実施例1と同様に調製した。なお浸透圧は311mОsm/Kgであった。
グリセリン1.96gをキシリトール(キシリット:東和化成工業(株)製)1.53gとして、実施例1と同様に調製した。なお浸透圧は299mОsm/Kgであった。
グリセリン1.96gをD−ソルビトール(D−ソルビトール:日研化成(株)製)1
.81gとして、実施例1と同様に調製した。なお浸透圧は315mОsm/Kgであった。
グリセリン1.96gをプロピレングリコール(プロピレングリコール:昭和電工(株)製)0.76gとして、実施例1と同様に調製した。なお浸透圧は317mОsm/Kgであった。
グリセリン1.96gをポリエチレングリコール(マクロゴール400:日本油脂(株)製)3.24gとして、実施例1と同様に調製した。なお浸透圧は327mОsm/Kgであった。
実施例1、2及び比較例1〜7で得られた点眼剤を−5℃の保冷庫に保管し、製造直後、14、21、28日後の外観の目視評価について検討を行った。
外観目視評価:○ 結晶の析出は認められなかった。
× 結晶の析出が認められた。
その結果を表1に示す。
一方、グリセリンを配合した製剤(実施例1及び2)は、28日間の低温条件下での保存であっても結晶析出が起こらず、保存安定性に優れていた。
またさらに、実施例1に関しては6ヶ月の保存であっても結晶析出は起こらなかった。
下記参考例1〜2、及び比較例8に示す点眼剤を調製し、以下に示す方法により眼圧測定を行った。
(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジンハイドロクロライド1.1g、無水リン酸二水素ナトリウム(太平化学産業(株)製)0.8g、塩化カリウム0.5gに精製水を50g加え攪拌し、完全に溶解させ、精製水に溶解した水酸化ナトリウムを添加してpHを6.7とし、更に精製水を加えて全量を100gとし、点眼剤を調製した。なお、浸透圧は348mOsm/Kgであった。
無水リン酸二水素ナトリウムを0.6gとして、参考例1と同様に点眼剤を調製した。なお、浸透圧は332mOsm/Kgであった。
(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジンハイドロクロライド1.1g、塩化カリウム1gに精製水を50g加え攪拌し、完全に溶解させ、精製水に溶解した水酸化ナトリウムを添加してpHを6.7とし、更に精製水を加えて全量を100gとし、点眼剤を調製した。なお、浸透圧は344mOsm/Kgであった。
正常眼圧の雄性日本白色家兎(2.0−2.5Kg)を無麻酔で家兎固定器に固定し、ベノキシール(参天製薬)1滴点眼による眼局所麻酔を両眼に行った。その後、空圧圧平式眼圧計(Alcon Applanation PneumatonographTM,日本アルコン)で両眼の眼圧を測定
し0時間値とした。0時間値測定後速やかに参考例1〜2及び比較例8の点眼剤を家兎の左眼に50μl投与し、点眼1時間後、2時間後、3時間後及び4時間後に両眼の眼圧を測定した(n=4〜6)。その結果を表2に示す。
Claims (4)
- (S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジン若しくはその塩又はそれらの溶媒和物、リン酸又はその塩及びグリセリンを含有する点眼用組成物。
- pHが5〜9である請求項1記載の組成物。
- (S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジン若しくはその塩又はそれらの溶媒和物及びリン酸又はその塩を含有する点眼用組成物に、グリセリンを配合することを特徴とする、(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジン若しくはその塩又はそれらの溶媒和物の結晶析出抑制方法。
- グリセリンからなる、(S)−(−)−1−(4−フルオロ−5−イソキノリンスルフォニル)−2−メチル−1,4−ホモピペラジン若しくはその塩又はそれらの溶媒和物の結晶析出抑制剤。
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