JP2008255121A - 抗b型肝炎ウイルス活性を有するヌクレオシド - Google Patents
抗b型肝炎ウイルス活性を有するヌクレオシド Download PDFInfo
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Abstract
Description
それ故、本発明の他の一目的はHBVに感染したヒト患者または他の宿主の処置のための方法および組成物を提供することである。
式中、R1 は水素、フッ素、臭素、塩素、沃素、メチルまたはエチルであり、そしてR2 はOH,Cl,NH2 またはHである。好ましい具体例においては、該ヌクレオシドは指示したエナンチオマーとしてそしてその対応するエナンチオマーが実質上存在しない形(すなわちエナンチオマー的にエンリッチされた形)で提供される。
代替具体例においては、式:
立体化学
ここに開示する方法に使用される化合物は、2’,3’−ジデオキシシチジン、2’,3’−ジデオキシ−5−(ハロもしくはメチル)シチジン、2−ヒドロキシメチル−5−(5−フルオロシトシン−1−イル)−1,3−ジオキソラン、または2−アミノ−6−(OH,Cl,NH2 ,またはH)−9−〔(4−ヒドロキシメチル)−テトラヒドロフラン−1−イル〕プリンのエナンチオマーである。
ここに開示するヌクレオシドは、受領者へ投与した時親活性化合物を直接または間接に提供することができる、またはそれ自身活性を発揮する任意の誘導体とは投与することができる。活性化合物のプロドラッグ具体例の非限定例は以下の構造のものを含むがそれらに限定されない。
本発明において宿主生物中のHBV感染を処置のために使用するヌクレオシドは発表された方法によって製造することができる。β−L−ヌクレオシド類は、例えば以下の発表に開示された方法または該方法の標準的修飾によって製造することができる。Jeong,et al.,J.of Med.Chem.,36:182−195(1993);ヨーロッパ特許公報No.0285884;G’enu−Dellac,C.,G.Gosselin,A.M.Aubertin,G.Obert,A.Kirn,and J.L.Imbach,潜在性抗ウイルス剤として3−置換チミジンα−L−ヌクレオシド誘導体:合成および生物学的評価,Antiviral Chem.Chemother.,2:83−92(1991);Johansson K.N.,B.G.Lindborg,and R.Noreen,ヨーロッパ特許出願352248;Mansuri,M.M.,V.Farina,J.E.Starrett,D.A.Benigni,V.Brankovan,and J.C.Martin,潜在性抗HIV剤としてのDDC,DDA,D4CおよびD4Cの幾何異性体の製造,Bioorg.Med.Chem.Lett.1:65−68(1991);Fujimori,S.,N.Iwanami,Y.Hashimoto,and K.Shudo,2’−デオキシ−β−L−リボヌクレオシドの便利なそして立体選択性合成,Nucleosides & Nucleotides,11:341−349(1992);G’enu−Dellac,C.G.Gosselin,A.M.Aubertin,E.Obert,A.Kirn,and J.L.Imbach,潜在性抗ウイルス剤としての3−置換チミジンα−L−ヌクレオシド誘導体;合成および生物学的評価;Antiviral Chem.Chemther.2:83−92(1991);Holy,A,2’−デオキシ−L−ウリジンの合成,Tetrahedron Lett.2:189−192(1992);Holy,A.核酸成分およびそれらの類縁体,CLIII,ピリミジンシリーズの2’−デオキシ−L−リボヌクレオシドの製造,Collect Czech Chem.Commun.37:4072−4087(1992);Holy,A.2’−デオキシ−L−ウリジン:糖2−アミノオキサゾリンから2,2’−アンヒドロヌクレオシド中間体を経てウラシル2’−デオキシヌクレオシドの全合成,Townsend LB,Tipson RS,Ed.Nucleic Acid Chem.New York:Wiley,1992:347−353,vol1),(1992);Okabe,M.,R,C.Sun,S.Tan,L.Todaro,and D.L.Coffen,グルタミン酸、リボノラクトンおよびピリミジン塩基からジデオキシヌクレオシドddCおよびCNTの合成,J.Org.Chem.,53:4780−4786(1988);Robins,M.J.,T.A.Khwja,and R.K.Robins,プリンヌクレオシドXXIX,21−デオキシ−L−アデノシンおよび21−デオキシ−L−グアノシンおよびそれらのαアノマーの合成,J.Org.Chjem.,35:363−369(1992);G’enu−Dellac,C.,Gosselin G.,Aubertin A.M.,Obert G.,Kirn A.,and Inbach J.L.,潜在性抗ウイルス剤としての3’−置換チミジンα−L−ヌクレオシド誘導体:合成および生物学的評価,Antiviral Chem.Chemother.2(3):83−92(1991);G’enu−Dellac,C.,Gosselin G.,Imbach J.L.,潜在的抗ウイルス剤としてのチミジンの新しい2’−デオキシ−3’−置換−α−L−トレオペントフラノヌクレオシド類,Tet.Lett.32(1):79−81(1991);G’enu−Dellac,C.,Gosslin G.,Imbach J.L.,1−ペントフラノシルヌクレオシドの合成の前駆体としてL−アラビノフラノースおよび2−デオキシ−1−エリトロペニトフラノースの新しいアシル化誘導体,216:240−255(1991);G’enu−Dellac,C.,Gosslin G.,Puech F,et al.,5種の天然に存在する核酸塩基のα−L−アラビノフラノシルおよび2’−デオキシ−α−L−エリトロペントフラノシルヌクレオシドの系統的合成および抗ウイルス性評価,10(b):1345−1376(1991)
シス−メクレオシドのDおよびLエナンチオマーの分離のための酵素的方法は、例えばNucleosides and Nucleotides,12(2):225−236(1993);
ヨーロッパ特許出願Nos.9230455.2および92304552.0(Biochem Pharma,Inc),およびPCT公報WO91/11186,WO92/14729およびWO92/14743(Emory University)に開示されている。
活性化合物がHBVを阻害する能力は種々の実験技術によって測定することができる。開示した化合物がHBVの複製を阻止する能力を評価するためここで使用したアッセイは、Korba and Gerin,Antiviral Res.,19:55−70(1992)に詳細に記載されている。例証のみの目的のため、そして本発明を限定することなく、β−L−2’,3’−ジデオキシシチジン(β−L−ddC),および(+)−β−D−2−ヒドロキシメチル−5−(5−フルオロシトシン−1−イル)−1,3−ジオキソラン((+)−β−D−FDOC)の毒性および抗HBV活性の評価結果が以下に与えられる。(−)−β−L−2−ヒドロキシメチル−5−(5−フルオロシトシン−1−イル)−1,3−ジオキソラン(C−)−β−L−FTC)およびβ−D−2’,3’−ジデオキシシチジン(β−D−ddC)の毒性および抗HBV活性は対照として含まれている。ここに記載した他の化合物も同様にして評価することができる。
2.2.15細胞培養物(肝炎ビリオンで形質転換したHepG2細胞)中のウイルスの成育を阻止する活性化合物の能力を評価した。表1に示すように、100μMの濃度ではテスト化合物のどれについても有意な毒性(未処理細胞中で見られる染料摂取レベルの50%以上の低下)が見られなかった。化合物は300μMにおいて中程度毒性であったが、すべての3化合物はβ−D−ddCよりもこの濃度において少ない毒性を示した。β−L−ddCおよびβ−L−FddCのIC50はβ−D−ddCのそれの約2倍であることが見える。
陽性処理対照、β−D−2’,3’−ジデオキシシトシン(β−D−ddC)は、使用した濃度においてHBV DNA複製の有意な低下を誘発した。以前の研究は、β−D−ddCの9〜12μMにおいてHBV RIの90%低下(未処理細胞中の平均レベルに関して)がこのアッセイシステムにおいて観察されることを示している(Korba and Gerin,Antiviral Res.19、55−70,1992)。これは表1に提示したデータと一致する。
ここに開示した化合物およびそれらの薬学的に許容される塩、プロドラッグ、および誘導体は、HBV感染、および抗HBV抗体陽性およびHBV陽性状態、HBVによって発生した慢性肝臓炎症、黄疸、急性肝炎、劇症肝炎、慢性持続性肝炎および疲労のような他の関連する状態の予防および処置に有用である。これら化合物または製剤は、抗HBV抗体またはHBV抗原陽性である、またはHBVへ曝露された個人の臨床的疾病の進行を予防もしくはおくらせるために予防的に使用することもできる。
Claims (9)
- 剤形が経口投与用である請求項1の医薬。
- 剤形がカプセルである請求項1の医薬。
- 剤形が錠剤である請求項1の医薬。
- 剤形が非経口投与用である請求項1の医薬。
- 2−ヒドロキシメチル−5−(5−フルオロシトシン−1−イル)−1,3−オキサチオランの(−)−エナンチオマーまたはラセミ混合物,2−ヒドロキシメチル−5−(シトシン−1−イル)−1,3−オキサチオランの(−)−エナンチオマーまたはラセミ混合物,2’−フルオロ−5−ヨードアラビノシルウラシル(FIAU)のエナンチオマーまたはラセミ混合物、2’−フルオロ−5−エチルアラビノシルウラシル(FEAU)のエナンチオマーまたはラセミ混合物、カルボビル、およびインターフェロンよりなる群から選ばれた化合物と交替に使用される請求項1の医薬。
- 2−ヒドロキシメチル−5−〔5−フルオロシトシン−1−イル〕−1,3−オキサチオランの(−)−エナンチオマーまたはラセミ混合物、2−ヒドロキシメチル−5−(シトシン−1−イル)−1,3−オキサチオランの(−)−エナンチオマーまたはラセミ混合物、2’−フルオロ−5−ヨードアラビノシルウラシル(FIAU)のエナンチオマーまたはラセミ混合物、2’−フルオロ−5−エチルアラビノシルウラシル(FEAU)のエナンチオマーまたはラセミ混合物、カルボビル、およびインターフェロンよりなる群から選ばれた化合物と併用される請求項1の医薬。
- R2がリン脂質である請求項1の医薬。
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US20020120130A1 (en) | 1993-09-10 | 2002-08-29 | Gilles Gosselin | 2' or 3' -deoxy and 2', 3' -dideoxy-beta-L-pentofuranonucleo-side compounds, method of preparation and application in therapy, especially as anti- viral agents |
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US6391859B1 (en) | 1995-01-27 | 2002-05-21 | Emory University | [5-Carboxamido or 5-fluoro]-[2′,3′-unsaturated or 3′-modified]-pyrimidine nucleosides |
AU722214B2 (en) | 1995-06-07 | 2000-07-27 | Centre National De La Recherche Scientifique (Cnrs) | Nucleosides with anti-hepatitis B virus activity |
US6005097A (en) * | 1996-06-14 | 1999-12-21 | Vion Pharmaceuticals, Inc. | Processes for high-yield diastereoselective synthesis of dideoxynucleosides |
US6444652B1 (en) | 1998-08-10 | 2002-09-03 | Novirio Pharmaceuticals Limited | β-L-2'-deoxy-nucleosides for the treatment of hepatitis B |
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KR100618028B1 (ko) | 1998-11-05 | 2006-08-30 | 쌍트르 나쉬오날 드 라 르쉐르스 쉬앙티피끄 | 항-b형 간염 활성을 가진 뉴클레오시드 |
US6407077B1 (en) | 1998-11-05 | 2002-06-18 | Emory University | β-L nucleosides for the treatment of HIV infection |
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CA2171550C (en) | 2008-08-26 |
EP0717628A1 (en) | 1996-06-26 |
CA2637774C (en) | 2011-07-19 |
AU7954694A (en) | 1995-03-27 |
US6525033B1 (en) | 2003-02-25 |
CA2171550A1 (en) | 1995-03-16 |
EP0717628A4 (en) | 1999-05-26 |
JPH09504785A (ja) | 1997-05-13 |
WO1995007086A1 (en) | 1995-03-16 |
CA2637774A1 (en) | 1995-03-16 |
US5990093A (en) | 1999-11-23 |
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