JP4580370B2 - アゴメラチンの新規な結晶形態iii、その製造方法、およびそれを含有する薬学的組成物 - Google Patents

アゴメラチンの新規な結晶形態iii、その製造方法、およびそれを含有する薬学的組成物 Download PDF

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JP4580370B2
JP4580370B2 JP2006211620A JP2006211620A JP4580370B2 JP 4580370 B2 JP4580370 B2 JP 4580370B2 JP 2006211620 A JP2006211620 A JP 2006211620A JP 2006211620 A JP2006211620 A JP 2006211620A JP 4580370 B2 JP4580370 B2 JP 4580370B2
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ジェラール・コクレル
ジュリー・リノル
ジャン−クロード・スヴィ
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Description

本発明は、式(I):
Figure 0004580370
で示されるアゴメラチン、またはN−[2−(7−メトキシ−1−ナフチル)エチル]アセトアミドの新規な結晶形態III、その製造方法、およびそれを含有する薬学的組成物に関する。
アゴメラチン、またはN−[2−(7−メトキシ−1−ナフチル)エチル]アセトアミドは、有用な薬理学的特性を有する。
実際、それは、一方では、メラトニン作用系レセプターのアゴニストであること、および他方では、5−HT2Cレセプターのアンタゴニストであることという二重の特徴を有する。これらの特性は、中枢神経系に、より特別には、重度うつ病、季節性情動障害、睡眠障害、心血管病理、消化系病理、時差ぼけから生じる不眠および疲労、食欲障害および肥満の処置に活性を賦与する。
アゴメラチン、その製造およびその治療的使用は、欧州特許出願公開第0 447 285号公報(EP 0 447 285)に記載されている。
本化合物の薬学的価値を考慮すると、極めて純粋に、充分に明確な結晶形態で、完全に再現可能に、それを得るのを可能にすることが重要であり、その結果、それは、製剤化の面で有用な特徴性を示し、温度、光、湿度または酸素レベルについて特別な必要条件なしに、長期間の貯蔵を許すのに充分なだけ安定である。
欧州特許出願公開第0 447 285号公報は、7−メトキシ−1−テトラロンから出発する8工程でのアゴメラチンの製造を記載している。しかし、この文書は、アゴメラチンを、これらの特徴性を再現可能なように示す形態で得るための条件を特定していない。
ここに、本出願人は、製剤化に関して有用な特徴性を特に示す、充分に明確な、完全に再現可能な結晶形態でアゴメラチンを得るのを許す、新規な合成法を開発した。
より具体的には、本発明は、式(I)の化合物の結晶形態IIIであって、Siemens D5005なる回折計(銅対陰極)を用いて測定され、面間距離d、ブラッグ角2θ、強度および相対強度(最も強いX線の百分率として表される)の形で表される、下記の粉末X線回折図表により特徴付けられる形態に関する:
Figure 0004580370
本発明は、式(I)の化合物の結晶形態IIIを製造する方法であって、アゴメラチンを、融解が完了するまで110℃に加熱し、次いで晶出するまでゆっくりと冷す方法にも関する。
この結晶形態を得ることの利点は、それが、一貫した、再現可能な組成を有する薬学的製剤の製造を許すことであって、それは、該製剤を経口投与に用いようとするときに、特に好都合である。
そうして得られた形態IIIの薬理学的研究は、それが中枢神経系および微小循環に関する実質的な活性を有し、アゴメラチンの結晶形態IIIが、ストレス、睡眠障害、不安、重度うつ病、季節性情動障害、心血管病理、消化系病理、時差ぼけによる不眠および疲労、精神分裂症、不安発作、憂うつ、食欲障害、肥満、不眠、疼痛、精神異常、てんかん、糖尿病、パーキンソン病、老人性痴呆、正常または病的加齢に付随する様々な障害、偏頭痛、記憶喪失、アルツハイマー病の処置に、および脳循環障害に有用であることが確立されることを可能にすることを立証した。活性のもう一つの分野では、アゴメラチンの結晶のIII形態は、性機能不全の処置に用いることができ、排卵阻害および免疫調節特性を有し、癌の処置に用いるのに役立つように思われる。
アゴメラチンの結晶形態IIIは、好ましくは、重度うつ病、季節性情動障害、睡眠障害、心血管病理、時差ぼけから生じる不眠および疲労、食欲障害および肥満の処置に用いられることになる。
本発明は、活性成分としてのアゴメラチンの結晶形態IIIを、1種類またはそれ以上の、適切な、不活性で無毒の賦形剤と組み合わせて含む薬学的組成物にも関する。本発明による薬学的組成物のうちでは、より特別には、経口、非経口(静脈内または皮下)または経鼻投与に適するもの、すなわち、錠剤もしくは糖衣錠、顆粒剤、舌下錠、ゼラチンカプセル剤、トローチ剤、坐剤、クリーム剤、軟膏、皮膚用ゲル、注射可能製剤、服用可能懸濁液剤および崩壊性ペーストが列挙され得る。
有用な投与量は、障害の性質および重篤さ、投与経路、ならびに患者の年齢および体重に応じて適応させることができる。投与量は、1回またはそれ以上の投与で1日あたり0.1mg〜1gに変動する。
以下の実施例は、本発明を例示するが、いかなる方法でもそれを限定しない。
N−[2−(7−メトキシ−1−ナフチル)エチル]アセトアミドの結晶形態III
N−[2−(7−メトキシ−1−ナフチル)エチル]アセトアミド100gを、通風式恒温機内で、融解が完了するまで、110℃に加熱し、次いで、晶出するまで、徐々に冷却する。得られる結晶形態IIIは、Siemens D5005なる回折計(銅対陰極)を用いて測定され、面間距離d、ブラッグ角2θ、強度および相対強度(最も強いX線の百分率として表される)の形で表される、下記の粉末X線回折図表によって特徴付けられる:
Figure 0004580370
薬学的組成物
それぞれ、25mgの用量を含有する、1,000錠剤の製造処方:
実施例1の化合物.......................25 g
乳糖一水和物.........................62 g
ステアリン酸マグネシウム................... 1.3g
トウモロコシ澱粉.......................26 g
麦芽デキストリン....................... 9 g
コロイド状無水シリカ..................... 0.3g
A型グリコール酸ナトリウム澱粉................ 4 g
ステアリン酸......................... 2.6g
それぞれ、25mgの用量を含有する、1,000錠剤の製造処方:
実施例1の化合物.......................25 g
乳糖一水和物.........................62 g
ステアリン酸マグネシウム................... 1.3g
ポビドン........................... 9 g
コロイド状無水シリカ..................... 0.3g
グリコール酸ナトリウムセルロース...............30 g
ステアリン酸......................... 2.6g

Claims (4)

  1. 式(I):
    Figure 0004580370

    で示されるアゴメラチンの結晶形態IIIであって、回折計(銅対陰極)を用いて測定され、面間距離d、ブラッグ角2θ、および相対強度(最も強いX線回折ピークに対する百分率として表される)の形で表される、下記の粉末X線回折図表により特徴付けられる形態:
    Figure 0004580370
  2. 活性成分として、請求項1記載のアゴメラチンの結晶形態IIIを、1種類またはそれ以上の、薬学的に許容され得る担体と組み合わせて含む薬学的組成物。
  3. メラトニン作用障害の処置のための医薬の製造に用いるための、請求項記載の薬学的組成物。
  4. 睡眠障害、季節性情動障害、重度うつ病、心血管病理、時差ぼけによる不眠もしくは疲労、食欲障害または肥満の処置のための医薬の製造に用いるための、請求項記載の薬学的組成物。
JP2006211620A 2005-08-03 2006-08-03 アゴメラチンの新規な結晶形態iii、その製造方法、およびそれを含有する薬学的組成物 Expired - Fee Related JP4580370B2 (ja)

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WO2011006387A1 (zh) * 2009-07-11 2011-01-20 浙江华海药业股份有限公司 阿戈美拉汀的制备方法、阿戈美拉汀晶形及其制备方法
CN102001959B (zh) * 2009-09-01 2014-07-02 北京本草天源药物研究院 一种药物晶体及其制备方法和用途
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