JP6121387B2 - マクロライドの結晶形、およびその使用 - Google Patents
マクロライドの結晶形、およびその使用 Download PDFInfo
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- C07H17/00—Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
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- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H17/00—Compounds containing heterocyclic radicals directly attached to hetero atoms of saccharide radicals
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- A—HUMAN NECESSITIES
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- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
- A61K31/7048—Compounds having saccharide radicals and heterocyclic rings having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin, digitoxin or digoxin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
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- A—HUMAN NECESSITIES
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- A61P33/02—Antiprotozoals, e.g. for leishmaniasis, trichomoniasis, toxoplasmosis
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
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Description
本願は、2010年3月22日に提出された米国特許仮出願第61/316,063号(参照により本明細書に組み込まれる)に基づく利益を主張するものである。
曲線位置敏感型検出器を備え、2θの範囲が120°であるInel XRG−3000という回折計を用いて、XRPDパターンを取った。CuKα線(40kV、30mA)の入射ビームを用いて、リアルタイムで、2θ=0.03°の分解能にてデータを集めた。分析前に、基準物質のシリコン(NIST SRM640c)を分析して、Si 111のピーク位置を確認した。薄肉のガラスキャピラリーにサンプルを入れることによって、分析用にサンプルを準備した。各キャピラリーをゴニオメーターヘッドの上に取り付け、データの取得中、回転させた。モノクロメータースリットは、5mm×160μmに設定した。
この材料について、1つのPANalyticalパターンと1つのInelパターンを分析したので、複数のパターンとの比較を通じて、少なくとも部分的に最適化された配向と粒子統計の影響を評価することができた。ピーク位置と強度はパターン間で一貫しており、粒子および配向統計が適正であることが示されている。観察されたピークは図1および表1に示されており、代表的なピークは表2に列挙されている。
この材料について、1つのInelパターンを分析し、単結晶データからシミュレートしたパターン(図示なし)との比較を通じて、好ましい配向および粒子統計の影響を評価できた。ピーク位置と強度はパターン間で一貫しており、粒子および配向統計が適正であることが示された。観察されたピークは図2および表3に示されており、代表的なピークは表4に列挙されている。
結晶形Iおよび結晶形IIをもたらす再結晶化条件と、非晶性材料、または結晶形Iと結晶形IIとの混合物をもたらす条件と、これらの条件による生成量(回収量)が下記の表A「再結晶化実験結果」に示されている。各単離生成物のX線粉末回折パターンの分析によって、結晶多形を割り出した。表では、「T」は、溶媒の固体質量に対する比率をmL/mg(またはL/g)で表したものであり、DCMはジクロロメタンを意味し、DMFはジメチルホルムアミドを意味し、IPEはイソプロピルエーテルを意味する。
CEM−101の結晶形Iは、高温顕微鏡検査によれば、約180℃で溶融を開始し、約200℃で最終溶融し、示差走査熱量測定(DSC)によれば、170℃、および197〜198℃に吸熱イベントを示す。CEM−101の結晶形IIは、高温顕微鏡検査によれば、約215℃で溶融を開始し、約225℃で、単一の吸熱イベントとしてDSCピークを示す。各種量の結晶形Iと結晶形IIとの混合物は、それらの結晶形の比率に応じて、DSCによれば、194〜199℃、および219〜225℃に吸熱イベントを示した。高温顕微鏡検査および/またはDSCを用いて、本明細書に記載されている化合物および組成物中の特定の結晶形の有無を調べられることを理解されたい。
結晶形Iおよび結晶形IIをスラリー化することによる相互変換実験が下記の表Bに示されており、この実験では、開始固体は結晶形Iと結晶形IIとの混合物であり、IPAはイソプロピルアルコール(イソプロパノール)であり、MEKはメチルエチルケトン(2−ブタノン)である。
CEM−101の濃度をLC/MS−MSピーク面積に対してプロットすることによって得た直線検量線を用いて、CEM−101の結晶形の水溶解度を下記のようにして得た。沈殿するまで試験化合物(乾燥粉末)を0.9%塩類溶液(初期pH6.03)に加え、その混合物を振とうしながら6時間インキュベートする。このインキュベート期間後、サンプルを2回遠心分離し、その化合物の直線検量線を用いて溶解度を推定する。結晶形Iの溶解度は1411μg/mLを示した。
強制経口投与によって体重(b.w.)1kg当たり20または100mgを単回投与したバルブ/cマウス内で、CEM−101結晶形Iおよび結晶形IIとして特徴付けられるCEM−101のロットの薬物動態を評価した。投与剤は、0.5%(w/v)カルボキシメチルセルロース水溶液のビヒクル中に2.0mg/mLまたは10mg/mLとして、投与体積10mL/kg b.w.で調製した。投与後6時間にわたり、さまざまな時点に血液サンプルを採取した。結果を以下に示す。
Claims (15)
- 前記組成物が、結晶形IIの形態の式Iの前記化合物を10%未満含有することを特徴とする、請求項1に記載の製造方法。
- 前記組成物が、結晶形IIの形態の式Iの前記化合物を5%未満含有することを特徴とする請求項1に記載の製造方法。
- 請求項1〜3のいずれか1項に記載の製造方法であって、前記製造方法は:
前記化合物の前記溶液を加熱する工程;
前記化合物の前記溶液をろ過する工程;
蒸留によって前記化合物の前記溶液の体積を減少させる工程;および
前記化合物の前記溶液を添加する間、水を撹拌する工程のうち、1つ以上の工程をさらに含むことを特徴とする製造方法。 - 前記溶媒がアセトン、メタノール、若しくはエタノール、またはそれらの組合せであることを特徴とする請求項1〜請求項4のいずれか1項に記載の製造方法。
- 前記溶媒がアセトンであることを特徴とする請求項1〜請求項4のいずれか1項に記載の製造方法。
- 前記溶液が50℃未満の温度の水に添加されることを特徴とする請求項1〜請求項6のいずれか1項に記載の製造方法。
- 前記溶液が10℃〜30℃の範囲内の温度の水に添加されることを特徴とする請求項1〜請求項6のいずれか1項に記載の製造方法。
- 前記組成物が、結晶形Iの形態の前記化合物を10%未満含有することを特徴とする請求項9に記載の製造方法。
- 前記組成物が、結晶形Iの形態の式Iの前記化合物を5%未満含有することを特徴とする請求項9に記載の製造方法。
- 請求項9〜11のいずれか1項に記載の製造方法であって、前記製造方法は:
前記化合物の前記溶液をろ過する工程;
蒸留によって前記化合物の前記溶液の体積を減少させる工程;および
前記水を添加する間、前記化合物の前記溶液を撹拌する工程のうち、1つ以上の工程をさらに含むことを特徴とする製造方法。 - 前記溶媒がアセトン、アセトニトリル、1,4−ジオキサン、メタノール、若しくはエタノール、またはそれらの組合せであることを特徴とする請求項9〜請求項12のいずれか1項に記載の製造方法。
- 前記有機溶媒の水に対する体積:体積比は1〜10の範囲内にあることを特徴とする請求項9〜13のいずれか1項に記載の製造方法。
- 前記化合物の前記溶液が周囲温度を超えることを特徴とする請求項8〜請求項14のいずれか1項に記載の製造方法。
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