JPWO2012029827A1 - 薬物−ブロックコポリマー複合体とそれを含有する医薬の製造方法 - Google Patents
薬物−ブロックコポリマー複合体とそれを含有する医薬の製造方法 Download PDFInfo
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- JPWO2012029827A1 JPWO2012029827A1 JP2012531907A JP2012531907A JPWO2012029827A1 JP WO2012029827 A1 JPWO2012029827 A1 JP WO2012029827A1 JP 2012531907 A JP2012531907 A JP 2012531907A JP 2012531907 A JP2012531907 A JP 2012531907A JP WO2012029827 A1 JPWO2012029827 A1 JP WO2012029827A1
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- Prior art keywords
- block copolymer
- drug
- producing
- poorly water
- copolymer complex
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
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Abstract
Description
で表される化合物が挙げられる。こうしたブロックコポリマーは例えば,前記の特許文献1,特開平6−206815号公報や国際公開2006/033296号パンフレット等に記載の製造方法,又はそれを応用した方法で製造されるが,それらの製造方法に限定されない。
難水溶性薬物であるパクリタキセル30重量部と,国際公開2006/033296号パンフレットに記載の方法で得られたポリエチレングリコール−ポリアスパラギン酸誘導体が結合してなるブロックコポリマー(融点;50〜57℃)100重量部とを含量が20質量%になるようにエタノール(沸点;78.3℃)に溶解し,液温を45℃に調整した。この液をスプレードライ実験機(日本ビュッヒ:B−290)により,入口温度15℃の気流雰囲気下に噴霧乾燥した。得られた乾燥物はSEM観察で粒径10μm程度であった。
難水溶性薬物であるパクリタキセル30重量部と実施例1記載のポリエチレングリコール−ポリアスパラギン酸誘導体を用いたブロックコポリマー100重量部とを固形分含量が30質量%になるようにエタノールに溶解し,液温を45℃に調整した。この液をスプレードライ実験機(日本ビュッヒ:B−290)により,入口温度15℃の気流雰囲気下に噴霧乾燥した。得られた乾燥物はSEM観察で粒径10μm程度であった。
難水溶性薬物であるパクリタキセル30重量部と実施例1記載のポリエチレングリコール−ポリアスパラギン酸誘導体を用いたブロックコポリマー100重量部とを含量が20質量%になるようにエタノールに溶解し,液温を40℃に調整した。この液をスプレードライ実験機(日本ビュッヒ:B−290)により,入口温度10℃の気流雰囲気下に噴霧乾燥した。得られた乾燥物はSEM観察で粒径10μm程度であった。
難水溶性薬物であるパクリタキセル30重量部と実施例1記載のポリエチレングリコール−ポリアスパラギン酸誘導体を用いたブロックコポリマー100重量部とに,更にPEG(ポリエチレングリコール4000)を200重量部加え,含量が30質量%になるようにエタノールに溶解し,液温を45℃に調整した。この液をスプレードライ実験機(日本ビュッヒ:B−290)により,入口温度20℃の気流雰囲気下に噴霧乾燥した。得られた乾燥物はSEM観察で粒径10μm程度であった。
難水溶性薬物であるドセタキセル30重量部と実施例1記載のポリエチレングリコール−ポリアスパラギン酸誘導体を用いたブロックコポリマー100重量部とを含量が20質量%になるようにエタノールに溶解し,液温を40℃に調整した。この液をスプレードライ実験機(日本ビュッヒ:B−290)により,入口温度15℃の気流雰囲気下に噴霧乾燥した。得られた乾燥物はSEM観察で粒径10μm程度であった。
難水溶性薬物であるパクリタキセル30重量部と実施例1記載のポリエチレングリコール−ポリアスパラギン酸誘導体を用いたブロックコポリマー100重量部とを乳鉢上で粉砕混合した。
難水溶性薬物であるパクリタキセル30重量部をエタノールに溶解し,液温15℃にて実施例1記載のポリエチレングリコール−ポリアスパラギン酸誘導体を用いたブロックコポリマー100重量部と混合した。この液を15℃に維持したまま真空乾燥を行い,白色〜微黄色の粉末を得た。
実施例1〜5で得られた複合体,比較例1〜2で得られた組成物を注射用水中に分散しウルトラターラックスミキサで攪拌した時の分散性能を観察し,得られた高分子ミセル溶液の平均粒子径を,動的光散乱法を用いた粒径測定装置(大塚電子工業:ELS−Z2)で測定した。結果を表1に示す。
Claims (15)
- 難水溶性薬物と,親水性セグメント及び疎水性セグメントが結合してなるブロックコポリマーとを1種又は2種以上の非水性溶媒中で混合し,必要により加温して得られる混合液を噴霧乾燥することを特徴とする薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物と前記ブロックコポリマーとを含む前記混合液を加温し,該ブロックコポリマーの融点以下に維持した気流雰囲気中に噴霧乾燥することを特徴とする請求項1に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物と前記ブロックコポリマーとを含む前記混合液を25℃以上に加温することを特徴とする請求項1又は2に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物と前記ブロックコポリマーとを含む前記混合液を35℃以上に加温することを特徴とする請求項1又は2に記載の薬物−ブロックコポリマー複合体の製造方法。
- 噴霧乾燥する際の前記気流雰囲気が40℃以下であることを特徴とする請求項2に記載の薬物−ブロックコポリマー複合体の製造方法。
- 噴霧乾燥する際の前記気流雰囲気が20℃以下であることを特徴とする請求項2に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物と前記ブロックコポリマーとを含む前記混合液中の前記非水性溶媒以外の成分の割合が,前記混合液の総質量に対して10質量%以上である請求項1〜6のいずれか一項に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物が難水溶性の抗がん剤,抗生物質,抗リュウマチ剤又は抗菌剤であることを特徴とする請求項1〜7のいずれか一項に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物が難水溶性の抗がん剤であることを特徴とする請求項1〜8のいずれか一項に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記ブロックコポリマーの前記親水性セグメントがポリエチレングリコール又はその誘導体であり,かつ前記疎水性セグメントがポリアスパラギン酸誘導体又はポリグルタミン酸誘導体であることを特徴とする請求項1〜9のいずれか一項に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記非水性溶媒が85℃以下の沸点を持つ有機溶媒であることを特徴とする請求項1〜10のいずれか一項に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記有機溶媒がエタノール,メタノール,酢酸エチル,イソプロパノール,ヘキサン,クロロホルム,ジクロロメタン,アセトン,アセトニトリル,テトラヒドロフランからなる群から選ばれる1種又は2種以上の溶媒であることを特徴とする請求項11に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記難水溶性薬物と前記ブロックコポリマーとを含む前記混合液が,更に,糖類,糖アルコール類,無機塩類,界面活性剤からなる群から選ばれる1種又は2種以上の化合物を含有することを特徴とする請求項1〜12のいずれか一項に記載の薬物−ブロックコポリマー複合体の製造方法。
- 前記界面活性剤がポリエチレングリコール,ポリソルベート若しくはポリオキシエチレン硬化ヒマシ油,又はそれらの混合物であることを特徴とする請求項13に記載の薬物−ブロックコポリマー複合体の製造方法。
- 請求項1〜14のいずれか一項に記載の製造方法により得られる薬物−ブロックコポリマー複合体を含有する医薬製剤。
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AU2011297045A1 (en) | 2013-03-21 |
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CA2809934C (en) | 2018-09-04 |
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