JP2010514801A - ロミデプシンの精製 - Google Patents
ロミデプシンの精製 Download PDFInfo
- Publication number
- JP2010514801A JP2010514801A JP2009544292A JP2009544292A JP2010514801A JP 2010514801 A JP2010514801 A JP 2010514801A JP 2009544292 A JP2009544292 A JP 2009544292A JP 2009544292 A JP2009544292 A JP 2009544292A JP 2010514801 A JP2010514801 A JP 2010514801A
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- JP
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- Prior art keywords
- romidepsin
- composition
- purifying
- apparent
- certain embodiments
- 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.)
- Ceased
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- 229960003452 romidepsin Drugs 0.000 title claims abstract description 200
- OHRURASPPZQGQM-UHFFFAOYSA-N romidepsin Natural products O1C(=O)C(C(C)C)NC(=O)C(=CC)NC(=O)C2CSSCCC=CC1CC(=O)NC(C(C)C)C(=O)N2 OHRURASPPZQGQM-UHFFFAOYSA-N 0.000 title claims abstract description 198
- 108010091666 romidepsin Proteins 0.000 title claims abstract description 197
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- C12P21/00—Preparation of peptides or proteins
- C12P21/02—Preparation of peptides or proteins having a known sequence of two or more amino acids, e.g. glutathione
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/10—Tetrapeptides
- C07K5/1002—Tetrapeptides with the first amino acid being neutral
- C07K5/1005—Tetrapeptides with the first amino acid being neutral and aliphatic
- C07K5/101—Tetrapeptides with the first amino acid being neutral and aliphatic the side chain containing 2 to 4 carbon atoms, e.g. Val, Ile, Leu
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Abstract
Description
本出願は、米国特許法§119(e)の下、米国仮特許出願第60/882,698号および同第60/882,704号に対する優先権を主張し、これらの出願は両方とも2006年12月29日に出願され、これらの各々の出願は本明細書中で参考として援用される。
ロミデプシン(Romidepsin)は、藤沢薬品工業によってChromobacterium violaceumから単離された天然の生成物である。特許文献1(1995);特許文献2(1990年12月11日発行)(これらの各々は、本明細書に参考として援用される)を参照のこと。ロミデプシンは、4つのアミノ酸残基(D−バリン、D−システイン、デヒドロブチリン(dehydrobutyrine)、およびL−バリン)からなる二環式ペプチドであり、かつ新規な酸(3−ヒドロキシ−7−メルカプト−4−ヘプタン酸)である。ロミデプシンは、アミド結合およびエステル結合の両方を含むデプシペプチドである。発酵を使用するC.violaceumの生成に加えて、ロミデプシンはまた、合成手段または半合成手段によって調製され得る。Kahnらによって報告されたロミデプシンの全合成は、14工程を要し、18%の全体収率でロミデプシンを生じる。非特許文献1を参照のこと。ロミデプシンの構造は、以下に示される:
本発明は、純粋なロミデプシン(特に、ダイマー化、オリゴマー化またはポリマー化したロミデプシンのような夾雑物を含まないロミデプシン)を再現可能に生成しないという認識に基づいている。この認識に基づくと、本発明は、これら夾雑する副生成物のレベルを減少させる条件下で、ロミデプシンを再現可能に調製するためのシステムを提供する。約6.5未満の、より好ましくは、約6.0未満の見かけのpHで、ロミデプシンを生成、精製および/または貯蔵することによって、ダイマー化、オリゴマー化またはポリマー化したロミデプシンの形成が妨げられることが見いだされた。ロミデプシンの精製プロセスにおけるこの改善は、公知のプロセスによって提供されるものより、高い収量のロミデプシンおよび/または高い純度のロミデプシンを可能にする。このような改善は、ヒトにおける使用のための製薬グレードのロミデプシンを調製するのに特に有用である。
特定の官能基および化学用語の定義は、以下でより詳細に記載される。本発明の目的のために、化学元素は、元素周期表(CASバージョン,Handbook of Chemistry and Physics,第75版,表紙の裏側)に従って同定され、そして特定の官能基は、一般に、本明細書に記載されるように定義される。さらに、有機化学の一般原理、ならびに特定の官能部分および反応性は、Organic Chemistry,Thomas Sorrell,University Science Books,Sausalito,1999(その全体は、本明細書に参考として援用される)に記載される。
「酸」:用語「酸」は、本明細書で使用される場合、無機酸および有機酸をいう。無機酸の例としては、塩酸、臭化水素酸、ヨウ化水素酸、硝酸、硫酸、およびリン酸が挙げられるが、これらに限定されない。有機酸の例としては、ギ酸、酢酸、トリフルオロ酢酸、フマル酸、シュウ酸、酒石酸、マレイン酸、クエン酸、コハク酸、リンゴ酸、メタンスルホン酸、ベンゼンスルホン酸、およびp−トルエンスルホン酸が挙げられるが、これらに限定されない。任意の酸が、上記緩衝剤またはロミデプシンの溶液またはロミデプシンの精製において使用されるもののpHを調節するために使用され得る。特定の実施形態において、酢酸が使用される。特定の実施形態において、塩酸が使用される。特定の実施形態において、クエン酸が使用される。特定の実施形態において、硫酸が使用される。
本発明は、ロミデプシン(癌の処置において有用な公知のヒストンデアセチラーゼ(HDAC)インヒビター)を調製するための改善されたシステムを提供する。不運なことに、ロミデプシンを調製するための公開された方法は、純粋な、モノマー性のロミデプシンを再現可能に精製しない。驚くべきことに、上記精製プロセスの間のpH制御は、純粋なモノマー性のロミデプシンを再現可能に提供することが見いだされた。特に、低下した見かけのpH(例えば、4〜6の範囲に及ぶ見かけのpH)で上記精製の少なくとも特定の部分を行うことは、ダイマー化、オリゴマー化、またはポリマー化した副生成物が夾雑することなく、精製されたモノマー性のロミデプシンのより高い収量を生じる。
mは、1、2、3もしくは4であり;
nは、0、1、2もしくは3であり;
pおよびqは、独立して、1もしくは2であり;
Xは、O、NH、もしくはNR8であり;
R1、R2、およびR3は、独立して、水素;置換されていないかもしくは置換されている、分枝状もしくは非分枝状の、環式もしくは非環式の脂肪族;不飽和もしくは飽和の、分枝状もしくは非分枝状の、環式もしくは非環式のヘテロ脂肪族;置換されているかもしくは置換されていないアリール;または置換されていないかもしくは置換されているヘテロアリールであり;
R4、R5、R6、R7およびR8は、独立して、水素;または置換されているかもしくは置換されていない、分枝状もしくは非分枝状の、環式もしくは非環式の脂肪族;およびその薬学的に受容可能な塩である。特定の実施形態において、mは1である。特定の実施形態において、nは1である。特定の実施形態において、pは1である。特定の実施形態において、qは1である。特定の実施形態において、XはOである。特定の実施形態において、R1、R2、およびR3は、置換されていないかもしくは置換されている、分枝状もしくは非分枝状の、非環式脂肪族である。特定の実施形態において、R4、R5、R6、およびR7は、すべて水素である。
mは、1、2、3もしくは4であり;
nは、0、1、2もしくは3であり;
qは、2もしくは3であり;
Xは、O、NH、もしくはNR8であり;
Yは、OR8もしくはSR8であり;
R2およびR3は、独立して、水素;置換されていないかもしくは置換されている、分枝状もしくは非分枝状の、環式もしくは非環式の脂肪族;置換されていないかもしくは置換されている、分枝状もしくは非分枝状の、環式もしくは非環式のヘテロ脂肪族;置換されていないかもしくは置換されているアリール;または置換されていないかもしくは置換されているヘテロアリールであり;
R4、R5、R6、R7およびR8は、水素;または置換されているかもしくは置換されていない、分枝状もしくは非分枝状の、環式もしくは非環式の脂肪族;およびその薬学的に受容可能な塩から独立して選択される。特定の実施形態において、mは1である。特定の実施形態において、nは1である。特定の実施形態において、qは2である。特定の実施形態において、XはOである。他の実施形態において、XはNHである。特定の実施形態において、R2およびR3は、置換されていないかもしくは置換されている、分枝状もしくは非分枝状の、非環式の脂肪族である。特定の実施形態において、R4、R5、R6およびR7は、すべて水素である。
(吸着樹脂によるロミデプシンの精製)
約400gのロミデプシンを含むChromobacterium violaceumの培養ブロス(約600L;H2SO4でpH2.5に調節される)を抽出し、その抽出ブロスを、Sepabeads SP850(非イオン性吸着樹脂)を充填したカラムに適用する。ロミデプシン(せいぜい6g−ロミデプシン/L−樹脂)を、せいぜいsv=6の流速で、上記樹脂に結合させる。水道水(約3倍樹脂容積)および25% アセトン水溶液(約5倍樹脂容積)で洗浄した後、約65% アセトン水溶液およびせいぜいsv=4の流速で溶出を行う。
上記溶出液を水で希釈して、水溶液を生成する(約75% 水分含有量)。この溶液を、Diaion HP20SSカラムに適用する。この非イオン性吸着樹脂は、せいぜいsv=5の流速でロミデプシンを吸着する(約10g−ロミデプシン/L−樹脂)。25% アセトン水溶液(約0.5倍樹脂容積)および40% アセトン水溶液(約4倍樹脂容積)で洗浄した後、47% アセトン水溶液で溶出を行う。上記溶出液を、逆相HPLC(RP−HPLC)によって分析する。その活性画分を、中間保持タンクの中で合わせる。
上記HP20SSカラムから得られる溶出液を水で希釈して、水溶液(約80% 水分含有量)を生成する。この溶液をDiaion HP20カラムに適用する。20% アセトン水溶液で洗浄した後、アセトンで溶出を行う。この溶出液を真空中で濃縮する。上記濃縮物に酢酸エチルを添加した後、上記濃縮物を、真空中でさらに濃縮する。この工程を反復して行う。
得られた濃縮物を酢酸エチル中に溶解し(約6mg/mL)、アルミナ樹脂カラムに適用する(約75g−ロミデプシン/L−樹脂)。上記カラムを酢酸エチル(約2倍アルミナ容積)、およびアセトンと酢酸エチルとの混合物(0.5〜2.0 v/v、約8倍アルミナ容積)で展開する。上記濃縮物にアセチルを添加した後、得られた溶液をさらに濃縮する。
上記工程から得られる濃縮物をメタノールで希釈し、真空中で濃縮して、粗製ロミデプシン結晶を生じる。沈澱した結晶を、濾過により集める。
上記粗製ロミデプシン結晶を、85% アセトン水溶液中に溶解し(約13L/kg−粗製ロミデプシン結晶)、そして攪拌しながら精製水をゆっくりと添加することによって沈澱させる(約65L/kg−粗製ロミデプシン結晶)。上記沈澱した結晶を濾過により集め、15% アセトン水溶液で洗浄する(約5L/kg−粗製ロミデプシン)。上記湿っている結晶を、−70℃未満において真空下で乾燥させる。
前述は、本発明の特定の非限定的な好ましい実施形態を記載してきた。当業者は、単なる慣用的実験を用いて、本明細書に記載される、本発明の具体的実施形態に対する多くの等価物を認識するかまたは確認することができる。当業者は、この記載に対する種々の変更および改変を認識し、これらの変更および改変は、以下の特許請求の範囲において規定される本発明の趣旨からも範囲からも逸脱することなく行われ得る。
Claims (50)
- ロミデプシンを調製するための方法であって、該方法は、ロミデプシンを発酵ブロスから精製する工程を包含し、ここで該精製する工程の少なくとも一部は、6.0未満の見かけのpHにおいて行われる、方法。
- 前記見かけのpHは、約4.0〜約6.0の範囲に及ぶ、請求項1に記載の方法。
- 前記見かけのpHは、有機酸を使用して、6.0未満に維持される、請求項1に記載の方法。
- 前記有機酸は酢酸である、請求項3に記載の方法。
- 前記精製する工程は、バッチクロマトグラフィー、カラムクロマトグラフィー、再結晶化、またはこれらの組み合わせによって抽出し精製する工程を包含する、請求項1に記載の方法。
- ロミデプシンを調製するための方法であって、該方法は、
ロミデプシンを生成する微生物を発酵する工程;および
ロミデプシンを該発酵ブロスから精製する工程、
を包含し、ここで該精製する工程は、6.0未満の見かけのpHにおいて行われる、方法。 - 前記精製する工程は、前記ロミデプシンをカラムクロマトグラフィーによって精製する工程を包含する、請求項6に記載の方法。
- 前記ロミデプシンをカラムクロマトグラフィーによって精製する工程は、6.0未満の見かけのpHにおいて行われる、請求項7に記載の方法。
- 前記精製する工程は、ロミデプシンを再結晶化により精製する工程を包含する、請求項6に記載の方法。
- 前記ロミデプシンを再結晶化により精製する工程は、6.0未満の見かけのpHにおいて行われる、請求項9に記載の方法。
- 前記見かけのpHは、有機酸を使用して、6.0未満で維持される、請求項6、8または10に記載の方法。
- 前記有機酸は酢酸である、請求項11に記載の方法。
- ロミデプシン(FK228)を調製するための方法であって、該方法は、
ロミデプシンを生成する生物を発酵する工程;
ロミデプシンを発酵ブロスから、カラムクロマトグラフィーによって精製する工程;および
該ロミデプシンを再結晶化する工程、
を包含し、ここで該精製する工程または再結晶化する工程は、6.0未満の見かけのpHにおいて行われる、方法。 - 前記発酵する工程は、Chromobacterium violaceumを発酵する工程を包含する、請求項13に記載の方法。
- 前記精製する工程は、非イオン性吸着樹脂を使用して、ロミデプシンを精製する工程を包含する、請求項13に記載の方法。
- 前記精製する工程は、6.0未満の見かけのpHにおいて行われる、請求項15に記載の方法。
- 前記精製する工程は、約4.0〜約6.0の範囲に及ぶ見かけのpHにおいて行われる、請求項15に記載の方法。
- 前記精製する工程は、ロミデプシンを、Sepabeads SP850樹脂を使用して精製する工程を包含する、請求項13に記載の方法。
- 前記精製する工程は、ロミデプシンを、Diaion HP20SS樹脂を使用して精製する工程を包含する、請求項13に記載の方法。
- 前記精製する工程は、ロミデプシンを、Diaion HP20樹脂を使用して精製する工程を包含する、請求項13に記載の方法。
- 前記精製する工程は、ロミデプシンを、アルミナを使用して精製する工程を包含する、請求項13に記載の方法。
- 前記精製する工程は、Sepabeads SP850樹脂のカラムもしくはバッチ、続いて、Diaion HP20SS樹脂のカラム、続いて、Diaion HP20樹脂のカラム、さらに続いて、アルミナのカラムを使用して、カラムクロマトグラフィーによって、ロミデプシンを精製する工程を包含する、請求項13に記載の方法。
- 前記再結晶化する工程は、メタノールを使用して、ロミデプシンを再結晶化する工程を包含する、請求項13に記載の方法。
- 前記再結晶化する工程は、85%アセトン水溶液を使用して、ロミデプシンを再結晶化する工程を包含する、請求項13に記載の方法。
- 前記見かけのpHは、有機酸を使用して、6.0未満に維持される、請求項13、16、または17に記載の方法。
- 前記有機酸は酢酸である、請求項25に記載の方法。
- ロミデプシンの組成物であって、
ここで該ロミデプシンは、ダイマー化、オリゴマー化またはポリマー化したロミデプシンを実質的に含まず、
ここで該ロミデプシンは、6.0未満の見かけのpHにおいて、少なくとも1工程で該ロミデプシンを精製する工程によって調製される、
組成物。 - 前記見かけのpHは、4.0〜6.0の間である、請求項27に記載の組成物。
- 前記見かけのpHは、有機酸を使用して、6.0未満に維持される、請求項27に記載の組成物。
- 前記有機酸は酢酸である、請求項29に記載の組成物。
- ロミデプシンの組成物であって、ここで該ロミデプシンは、請求項1に記載の方法によって調製される、組成物。
- ロミデプシンを含む組成物であって、ここで実質的にすべての該ロミデプシンはモノマー性である、組成物。
- ロミデプシンを含む組成物であって、ここで該ロミデプシンのうちの少なくとも98%は、モノマー性である、組成物。
- 前記ロミデプシンのうちの少なくとも99%は、モノマー性である、請求項33に記載の組成物。
- 前記ロミデプシンのうちの少なくとも99.5%は、モノマー性である、請求項33に記載の組成物。
- 前記ロミデプシンのうちの少なくとも99.9%は、モノマー性である、請求項33に記載の組成物。
- 前記ロミデプシンのうちの少なくとも99.95%は、モノマー性である、請求項33に記載の組成物。
- ロミデプシンを含む組成物であって、ここで該組成物は、ダイマー化、オリゴマー化またはポリマー化したロミデプシンを実質的に含まない、組成物。
- ロミデプシンを含む組成物であって、ここで該組成物は、少なくとも98%の純度のロミデプシンである、組成物。
- 前記組成物は、少なくとも99%の純度のロミデプシンである、請求項39に記載の組成物。
- 前記組成物は、少なくとも99.5%の純度のロミデプシンである、請求項39に記載の組成物。
- 前記組成物は、少なくとも99.8%の純度のロミデプシンである、請求項39に記載の組成物。
- 前記組成物は、少なくとも99.9%の純度のロミデプシンである、請求項39に記載の組成物。
- 前記組成物は、少なくとも99.95%の純度のロミデプシンである、請求項39に記載の組成物。
- 前記組成物は、1.0%以下の総不純物および0.2%以下の個々の不純物を含む、請求項39に記載の組成物。
- 前記組成物は、0.5%以下の総不純物および0.1%以下の個々の不純物を含む、請求項39に記載の組成物。
- クロロホルム中の前記組成物の溶液は、約20mg/mLの濃度において沈澱を生じない、請求項39に記載の組成物。
- 約20mg/mLの濃度の、クロロホルム中の前記組成物の溶液は、+38°〜+47°の範囲に及ぶ旋光性を有する、請求項31、32、33、38、または39に記載の組成物。
- 前記旋光性は、+39°〜+41°の範囲に及ぶ、請求項48に記載の組成物。
- 前記旋光性は、約+40°である、請求項48に記載の組成物。
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CN107090482A (zh) | 2017-08-25 |
CA2674309A1 (en) | 2008-07-10 |
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MX2009006969A (es) | 2010-04-07 |
AU2007342028A1 (en) | 2008-07-10 |
US20090186382A1 (en) | 2009-07-23 |
AU2007342028B2 (en) | 2013-06-13 |
CN101801994A (zh) | 2010-08-11 |
BRPI0720991A2 (pt) | 2014-03-18 |
US20090209616A1 (en) | 2009-08-20 |
WO2008083288A3 (en) | 2008-10-02 |
US8691534B2 (en) | 2014-04-08 |
BRPI0720991A8 (pt) | 2016-03-15 |
IL199547A (en) | 2017-09-28 |
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