JP2016518390A - 放出制御製剤 - Google Patents
放出制御製剤 Download PDFInfo
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- JP2016518390A JP2016518390A JP2016511799A JP2016511799A JP2016518390A JP 2016518390 A JP2016518390 A JP 2016518390A JP 2016511799 A JP2016511799 A JP 2016511799A JP 2016511799 A JP2016511799 A JP 2016511799A JP 2016518390 A JP2016518390 A JP 2016518390A
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Abstract
Description
本出願は、2013年4月30日に出願された米国仮出願第61/817,462号に基づいて優先権を主張するが、その全内容は、参照のため本明細書に組み込まれる。
1つの形態において、薬物放出ポリマーであって、少なくとも1つのカルボン酸基及び少なくとも1つのヒドロキシル基を含む活性医薬部分を含むポリマーが提供される。いくつかの実施態様において、この活性医薬部分は、相互に共有結合してモノマー単位を形成することによりポリマー骨格を形成し、そしてこの活性医薬部分は、ポリマー骨格の生分解の程度に依存する速度で放出されることが可能である。いくつかの実施態様において、この活性医薬又は薬物部分は、プロスタサイクリン化合物である。いくつかの実施態様において、このプロスタサイクリン化合物は、エポプロステノール、トレプロスチニル、ベラプロスト、イロプロスト、シカプロスト、又はプロスタグランジンI2から選択される。1つの実施態様において、プロスタサイクリン化合物はトレプロスチニルである。さらなる実施態様において、プロスタサイクリン化合物は、以下の構造(I):
Z1及びZ2は、それぞれ独立にO又はCH2を表し;
p=0又は1であり;
m=1、2、又は3であり;
R1は、H又は酸保護基を表し;
R2及びR3は、それぞれ独立にH又はヒドロキシル保護基を表し;
R4は、Hを表し、かつもう一方は、C1-6アルキルを表し;そして
R5は、C1-6アルキル基又はC2-8アルキニレン基を表す]を有する。
種々の実施態様が以下に記述される。留意すべきは、具体的な実施態様が、本明細書に検討されるより広い形態に対する網羅的な説明又は制限を目的とするものでないことである。特定の実施態様と併せて記述される1つの形態は、必ずしもこの実施態様に限定されるものではなく、他の任意の実施態様で実施することができる。
Z1及びZ2は、それぞれ独立にO又はCH2を表し;
p=0又は1であり;
m=1、2、又は3であり;
R1は、H又は酸保護基を表し;
R2及びR3は、それぞれ独立にH又はヒドロキシル保護基を表し;
R4は、Hを表し、かつもう一方は、C1-6アルキルを表し;そして
R5は、C1-6アルキル基又はC2-8アルキニレン基を表す]を有する。
K. Ishihara, S. Nakagawa, A. Sakakura, J. Am. Chem. Soc., 2005, 127, 4168-4169.
ポリマー形成反応は、図2の薬物ホモポリマーについて本明細書で記載した公知のSteglich エステル化(H5fle, G., W. Steglich, et al. 1978)の修飾により、最も好適に達成される。0.78mmolのトレプロスチニル30.5mgをジクロロメタン(DCM 25mL)及び脱イオン水(600μL)に溶解する。DCM(10ml)に溶解されたジメチルアミノピリジン(DMAP 760mg,6.24mmol)及びEDC HCl(1.19g,6.24mmol)を加える。反応が完了するか、又はプラトーに達する(遊離トレプロスチニルを測定するHPLC/MSにより判定される)まで室温で、反応混合物を一晩4〜8時間又は16時間攪拌し、この時点では、ポリマー形成中に消費される遊離トレプロスチニルはもう無い。激しく撹拌しながら、DCM溶液を余分な水に追加し、ロータリーエバポレーターでジクロロメタンを蒸発させる。濾過により粒子状ポリマーを回収し、水で洗浄して過剰のEDC、副生成物、及び未反応のトレプロスチニルを除去する。乾燥したポリマーをDCMに溶解し、当該分野で公知の方法に従ってDCM中のゲル浸透クロマトグラフィーを行うことにより、さらなる精製を行うことができる。このようなクロマトグラフィーで溶出する最初の(広い)ピークはトレプロスチニルポリマーであり、後に溶出するピークは、残留汚染物質であり、廃棄してもよい。
Claims (22)
- 複数の放出可能な薬物部分を含む医薬組成物であって、各薬物部分が少なくとも1つのカルボン酸基と少なくとも1つのヒドロキシル基とを含み、少なくともいくつかの薬物部分は、1つの薬物部分の該少なくとも1つのヒドロキシル基と別の薬物部分の少なくとも1つのカルボン酸基とを介して、互いに共有結合しており、こうしてポリマーを形成している、上記医薬組成物。
- 該共有結合が、該少なくとも1つのヒドロキシル基と該少なくとも1つのカルボン酸基との間で形成されるエステル結合である、請求項1に記載の医薬組成物。
- 該薬物部分がプロスタサイクリン化合物である、請求項1に記載の医薬組成物。
- 該プロスタサイクリン化合物が、エポプロステノール、トレプロスチニル、ベラプロスト、イロプロスト、シカプロスト、及びプロスタグランジンI2からなる群から選択される、請求項3に記載の医薬組成物。
- 該プロスタサイクリン化合物がトレプロスチニルである、請求項4に記載の医薬組成物。
- 該プロスタサイクリン化合物が、式(I):
Z1及びZ2は、それぞれ独立にO又はCH2を表し;
p=0又は1であり;
m=1、2、又は3であり;
R1は、H又は酸保護基を表し;
R2及びR3は、それぞれ独立にH又はヒドロキシル保護基を表し;
R4は、Hを表し、かつもう一方は、C1-6アルキルを表し;そして
R5は、C1-6アルキル基又はC2-8アルキニレン基を表す]
で表される化合物である、請求項3に記載の医薬組成物。 - 一方の薬物部分のカルボン酸基と、2番目の薬物部分のヒドロキシル基とに共有結合したコモノマーをさらに含む、請求項1に記載の医薬組成物。
- 該ポリマーが水に不溶性である、請求項7に記載の医薬組成物。
- 該ポリマーが水に可溶性である、請求項7に記載の医薬組成物。
- 該コモノマーが、6−ヒドロキシヘキサン酸、ベータ−ヒドロキシ酪酸。ヒドロキシル−ポリエチレングリコール−カルボン酸、乳酸、及びグリコール酸からなる群から選択される、請求項7に記載の医薬組成物。
- 該ポリマーを形成する該薬物部分が、以下の式(IIa)、(IIb)、及び(IIc):
- 薬剤学的に許容し得る賦形剤をさらに含む、請求項1に記載の医薬組成物。
- 該組成物が注射に適した形態である、請求項12に記載の医薬組成物。
- 該形態が皮下又は筋肉内注射に適している、請求項13に記載の医薬組成物。
- 該組成物がインプラントに適した形態である、請求項12に記載の医薬組成物。
- 少なくとも1つのカルボン酸基と少なくとも1つのヒドロキシル基とを、カプリング剤と触媒の存在下でエステル化することを含む、薬物放出ポリマーの製造方法。
- 該カプリング剤がN−(3−ジメチルアミノプロピル)−N’−エチルカルボジイミド又はN,N’−ジシクロヘキシルカルボジイミドである、請求項16に記載の方法。
- 該触媒が4−(ジメチルアミノ)ピリジンである、請求項16に記載の方法。
- エステル化の前に、1つのカルボキシル基が過剰である薬物部分の1つ又はそれ以上のカルボン酸基をブロックすることをさらに含む、請求項16に記載の方法。
- エステル化の前に、1つのヒドロキシルが過剰である薬物部分の1つ又はそれ以上のヒドロキシル基をブロックすることをさらに含む、請求項16に記載の方法。
- 該1つ又はそれ以上のヒドロキシル基が、塩化トリメチルシリル又は塩化t−ブチルジメチルシリルを使用してブロックされる、請求項20に記載の方法。
- 1つ又はそれ以上の症状の治療の必要な哺乳動物患者を治療、制御、遅延、又は予防する方法であって、診断的及び/又は治療的有効量の請求項1の医薬組成物を、該患者に投与することを含む、上記方法。
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ES2778274T3 (es) | 2014-10-20 | 2020-08-10 | United Therapeutics Corp | Síntesis de productos intermedios para producir derivados de prostaciclina |
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US9758465B2 (en) | 2017-09-12 |
CN105407883A (zh) | 2016-03-16 |
WO2014179295A1 (en) | 2014-11-06 |
US10494327B2 (en) | 2019-12-03 |
US20200062691A1 (en) | 2020-02-27 |
CA2911172A1 (en) | 2014-11-06 |
EP2991639A1 (en) | 2016-03-09 |
US20140323567A1 (en) | 2014-10-30 |
CA2911172C (en) | 2021-10-19 |
US11001551B2 (en) | 2021-05-11 |
US20210317066A1 (en) | 2021-10-14 |
EP2991639A4 (en) | 2016-11-30 |
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