JP2008513376A - 置換クロマン誘導体、医薬品、および治療における使用 - Google Patents
置換クロマン誘導体、医薬品、および治療における使用 Download PDFInfo
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- JP2008513376A JP2008513376A JP2007531541A JP2007531541A JP2008513376A JP 2008513376 A JP2008513376 A JP 2008513376A JP 2007531541 A JP2007531541 A JP 2007531541A JP 2007531541 A JP2007531541 A JP 2007531541A JP 2008513376 A JP2008513376 A JP 2008513376A
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Abstract
Description
意外にも、本発明者らは、強い抗癌活性、化学療法選択性および癌の放射線増感を含む重要な治療活性を示す、一般式(I)の新規な化合物群を見出した。
R1は、水素、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C2−6アルケニル、C1−6フルオロアルキル、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11基で置換されていてもよいC1−6アルキルであり、
描画「---」およびR2は、一緒になって二重結合を表すか、あるいは
描画「---」が単結合を表し、R2が水素、ヒドロキシ、NR10R11、C1−3アルコキシ、C1−3フルオロアルキル、ハロ、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11基で置換されていてもよいC1−3アルキルであり、
R3は、水素、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、(O)nC1−4アルキレンNR14R15、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11基で置換されていてもよいC1−6アルキルであり、
R4、R5、R6、R7、R8およびR9は独立して、水素、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11で置換されていてもよいC1−6アルキルであり、
R10、R11およびR12は独立して、水素、C1−6アルキル、C3−6シクロアルキルまたはトリアルキルシリルであり、
R13は、水素、C1−6アルキル、C3−6シクロアルキルまたはNR10R11であり、
nは、0または1を表し、
R14およびR15は独立して、水素またはC1−6アルキルを表すか、あるいは一緒になってNR14R15が5員または6員の複素芳香族基または複素環基を表す(ただし、R1が水素を表し、かつ「---」が単結合である場合、R2は水素ではない)]。
本発明者らは、一般式(I)の化合物が、意外にも予期しない生物学的および薬学的特性を示すことを見出した。
さらに、式(I)の化合物は、化学療法増感活性を有すると考えられ、すなわち、化学療法剤の細胞毒性(特に、癌細胞に対するもの)を増加させ、かつ/または癌性細胞を化学療法耐性から化学療法感受性の状態に変化させる。
また、本発明は、式(I)の化合物のみ、および/または各々との組合せ、および/または他の抗癌剤との組合せ、および/または放射線療法との組合せによる治療によって、腫瘍の成長速度を遅くするか、または腫瘍の大きさを縮小させることによって、癌患者を治療するための式(I)の化合物の使用を提供する。
R1は、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C2−6アルケニル、C1−6フルオロアルキル、場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードまたはNR10R11基によって置換されていてもよいC1−6アルキルを表し、
R3、R4、R5、R6、R7、R8およびR9は、式(I)の化合物について上に定義したとおりである]。
R2は、ヒドロキシ、ハロ、NR10R11、C1−3アルコキシ、C1−3フルオロアルキル、場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードまたはNR10R11によって置換されていてもよいC1−3アルキルを表し、
R3、R4、R5、R6、R7、R8およびR9は、式(I)の化合物について上に定義したとおりである]。
R2、R3、R4、R6、R7、R8およびR9は、式(I-c)の化合物について上に定義したとおりである]。
R1は、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C2−6アルケニル、C1−6フルオロアルキル、場合により1または複数のヒドロキシまたはNR10R11基によって置換されていてもよいC1−6アルキルであり、
R6、R7、R8およびR9は独立して、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、COOR12、COR13、または場合により1または複数のヒドロキシまたはNR10R11基によって置換されていてもよいC1−6アルキルを表す]
で表される化合物またはその保護された誘導体を、式(III):
R3は、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、(O)nC1−4アルキレンNR14R15、または場合により1または複数のヒドロキシもしくはNR10R11基によって置換されていてもよいC1−6アルキルを表し、
R4およびR5は独立して、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、または場合により1または複数のヒドロキシまたはNR10R11基によって置換されていてもよいC1−6アルキルを表し、
Xは、金属ハロ部分を表す]
で表される化合物またはその保護された誘導体で処理する工程;
ii)場合によって、その後生成物の複素環上の第3アルコール基を別の置換基に変換する工程;
iii)場合によって、その後脱保護する工程。
で表される化合物またはその保護された誘導体の複素環中にある二重結合を、好ましくは水素化によって、還元することにより調製できる。
3-(4-ヒドロキシフェニル)-4-(4-メトキシフェニル)-8-メチル-3,4-ジヒドロ-2H-クロメン-7-オール
工程1: 1-(2,4-ジヒドロキシ-3-メチル-フェニル)-2-(4-ヒドロキシ-フェニル)-エタノン
3-(4-ヒドロキシフェニル)-4-(4-メトキシフェニル)-3',4'-ジメトキシ-8-メチル-3,4-ジヒドロ-2H-クロメン-7-オール
工程1.1: 1-(2,4-ジヒドロキシ-3-メチル-フェニル)-2-(3,4-ジメトキシ-フェニル)エタノン
2.1. 組織培養
ヒト膵臓癌細胞株HPAC (CRL-2119)を、HEPES (15 mM)、インスリン(0.002 mg/ml)、トランスフェリン(0.005 mg/ml)、ヒドロコルチゾン(40 ng/ml)、上皮増殖因子(10 ng/ml)を含有するDMEM (Sigma)とHam's F12 (Sigma)の1:1混合培地で慣用法により培養した。卵巣癌細胞株であるCP70はGil Mor博士(イェール大学)から贈られたもので、DMEMとHam's F12の1:1混合培地で培養し、SKOV-3はATCCから購入したもので、McCoys 5a培地で培養した。乳癌細胞株MDA-MB-468はLeibovitz's L-15培地で培養した。メラノーマ細胞株であるMM200はPeter Hersey博士(ニューカッスル大学)から、A2058はPeter Parsons博士(QIMR)から贈られたものであった。両方ともDMEM培地で培養した。
それぞれの細胞株についてIC50値を決定した。細胞を96ウェルプレートに適切な細胞密度(成長速度の分析から決定した)でまき、試験化合物を存在させてまたは存在させないで5日間培養した。細胞増殖は、20μlの3-(4,5-ジメチルチアゾール-2-イル)-2,5-ジフェニルテトラゾリウムブロミド(MTT、PBS中に2.5mg/ml、Sigma)をメーカーの説明書に従って37℃で3〜4時間添加した後で評価した。IC50値は、x軸のlog用量に対する、y軸の対照増殖に対する%のsemi-logプロットから算出した。
上記の化合物No.1を1% CMC (m:v, 水)中の均質な懸濁液として調製した。この処方物を雌BALB/cマウスに50 mg/kgの用量で強制給餌により経口投与した。3匹の動物をそれぞれの時点(15分、30分、1時間、4時間、24時間)に割り当てた。それぞれの各時点で、動物を頸部脱臼により安楽死させ、血液を集めた。遊離の化合物の濃度を質量分析法で分析した。
3.1. 正常細胞に対する毒性
ウサギ腎細胞に対する細胞毒性の2回反復アッセイから、化合物No.1はこれらの細胞に対して弱い毒性をもつことが証明された(表1)。シスプラチンおよびフェノキソジオール(phenoxodiol;抗癌剤候補を試験することができる別のベンチマーク)と比較したとき、化合物No.1が示す毒性の程度は両方の比較化合物よりも高かった(化合物No.1が2μMであるのに対してシスプラチンは9.9μM)。
フェノキソジオールと化合物No.1のIC50値を比較したところ、化合物No.1は卵巣癌細胞株(CP70)、AR陰性のp53 Mt前立腺癌細胞株(PC3)、ER陰性の(p53 mt)乳癌細胞株(それぞれMDA-MB-468)、p53 Mt神経膠腫(HTB-138)、およびp53 Mt小細胞肺癌に対してすぐれた活性(2〜10倍増加)を示した(表2)。化合物No.1は、結腸直腸細胞株であるHT-29を除いて、試験した他の全ての細胞株に対してフェノキソジオールに匹敵する抗癌活性を示した(表2)。化合物No.1はまたメラノーマ細胞株MM200に対しても同等の効力があった(表2.1)。
経口薬物動態を雌BALB/cマウスで調べた。投与してから15分後に遊離化合物No.1の27.3μM のCmaxが血清において観察された。化合物No.1は急速に血清から消失し、8.2μMの濃度が30分後に、2.4μMが1時間後に観察された。その結果、この薬剤の半減期は約30分となる(図1および表3)。血清中の化合物No.1の大部分はその抱合状態で存在し、化合物No.1全体(遊離型+抱合型)の濃度は投与後15分で約100μMに達した(遊離:全体 1:4)。遊離:全体の比は経時的に低下した(30分後には1:12、1時間後には1:13)。投与後15分で化合物No.1が尿中に高濃度(815μM)で急速に出現することは、化合物No.1が胃腸管から吸収されて腎臓を経て排出されるという証拠である。
マウスマクロファージ細胞株RAW 264.7を、ウシ胎児血清(FCS)、2mM グルタミンおよび50U/ml ペニシリン/ストレプトマイシンを添加したDMEMで培養した。サブコンフルエントの細胞をフラスコから穏やかにかき取って、24ウェルプレートに5 x 105個/ウェルでまき、1時間接着させた。その後、細胞を10μM (0.025% DMSO中)の濃度の試験化合物またはビヒクルのみのいずれかで処理し、1時間インキュベートした。次いでLPS 50ng/ml (LPS-Sigma-Aldrich)を添加した。16時間インキュベートした後、培地を回収し、酵素免疫測定法(PGE2およびTXB2 - Cayman Chemical)を用いたエコサノイド測定のために-80℃で保存した。
化合物No.1は、非形質転換新生児包皮線維芽細胞の一次外植片に対して、シスプラチンより低い濃度で(IC50 = 化合物No.1が2μMであるのに対してシスプラチンは9μM)かなりの毒性を示す。しかしながら、ウサギ腎細胞に対しては比較的温和な毒性が認められた(化合物No.1 IC50>60μM)。有効性に関する研究は、化合物No.1がメラノーマ(MM200)と神経膠腫(HTB-128)を代表する細胞株に対して効果があることを実証した。しかし、この化合物は、これまで治療が非常に困難な癌であるとされてきた前立腺癌(PC3)、乳癌(MDA-MB-468)および肺癌(NCIHH-H23)を代表する細胞株に対して特に有効であるようである。
Constantinou AI, Mehta R, Husband A. 2003 Phenoxodiol, a novel isoflavone derivative, inhibits dimethylbenz[a]anthracene (DMBA)-induced mammary carcinogenesis in female Sprague-Dawley rats(新規なイソフラボン誘導体であるフェノキソジオールは雌Sprague-Dawleyラットでのジメチルベンズ[a]アントラセン誘導乳癌発生を抑制する) Eur J Cancer. 39, 1012-8.
Constantinou AI, Husband A. 2002 Phenoxodiol (2H-1-benzopyran-7-0,1,3-(4-hydroxyphenyl)), a novel isoflavone derivative, inhibits DNA topoisomerase II by stabilizing the cleavable complex(新規なイソフラボン誘導体であるフェノキソジオール(2H-1-ベンゾピラン-7-0,1,3-(4-ヒドロキシフェニル))は切断可能な複合体を安定化することによりDNAトポイソメラーゼIIを阻害する) Anticancer Res. 22, 2581-5.
Gamble, JR., Xia, P., Hahn, C., Drew, J., Drogemuller, C., Carter, C., Walker, C., Brown, DM., Vadas, MA. 2003 Phenoxodiol, a derivative of plant flavanoids, shows potent anti-tumour and anti-angiogenic properties(植物フラボノイドの誘導体であるフェノキソジオールは強力な抗腫瘍および抗血管新生作用を示す) Nature Medicine. 論文投稿済み.
Hersey, P and Zhang, X. D. 2001 How melanoma cells evade Trail-induced apoptosis(メラノーマ細胞はTrail誘発アポトーシスを如何に逃れるか) Nature reviews, Cancer, 1, 142-150.
Kamsteeg, M., Rutherford, T., Sapi, E., Hanczaruk, B., Shahabi, S., Flick, M., Brown, D.M および Mor, G. 2003 Phenoxodiol-an isoflavone analogue- induces apoptosis in chemo-resistant ovarian cancer cells(フェノキソジオール - イソフラボン類似体 - は化学療法抵抗性の卵巣癌細胞でのアポトーシスを誘導する) Oncogene, 22, 2611-20.
Claims (22)
- 一般式(I):
R1は、水素、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C2−6アルケニル、C1−6フルオロアルキル、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11基で置換されていてもよいC1−6アルキルであり、
描画「---」およびR2は、一緒になって二重結合を表すか、あるいは
描画「---」が単結合を表し、R2が水素、ヒドロキシ、NR10R11、C1−3アルコキシ、C1−3フルオロアルキル、ハロ、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11基で置換されていてもよいC1−3アルキルであり、
R3は、水素、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、(O)nC1−4アルキレンNR14R15、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11基で置換されていてもよいC1−6アルキルであり、
R4、R5、R6、R7、R8およびR9は独立して、水素、ヒドロキシ、ハロ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、または場合により1または複数のヒドロキシ、クロロ、ブロモ、ヨードもしくはNR10R11で置換されていてもよいC1−6アルキルであり、
R10、R11およびR12は独立して、水素、C1−6アルキル、C3−6シクロアルキルまたはトリアルキルシリルであり、
R13は、水素、C1−6アルキル、C3−6シクロアルキルまたはNR10R11であり、
nは、0または1を表し、
R14およびR15は独立して、水素またはC1−6アルキルを表すか、あるいは一緒になってNR14R15が5員または6員の複素芳香族基または複素環基を表す(ただし、R1が水素を表し、かつ「---」が単結合である場合、R2は水素ではない)]
で表される化合物、その塩もしくは誘導体、またはその薬学的に許容可能な塩。 - 化合物No.1〜9、42および43から選択される、請求項4に記載の化合物。
- 化合物No.10〜25から選択される、請求項4に記載の化合物。
- 化合物No.26〜41および44〜45から選択される、請求項4に記載の化合物。
- 請求項1に記載の式(I)の化合物の製造方法であって、
i)式(II):
R1は、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C2−6アルケニル、C1−6フルオロアルキル、または場合により1または複数のヒドロキシもしくはNR10R11基によって置換されていてもよいC1−6アルキルであり、
R6、R7、R8およびR9は独立して、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、COOR12、COR13、または場合により1または複数のヒドロキシもしくはNR10R11基によって置換されていてもよいC1−6アルキルを表す]
で表される化合物またはその保護された誘導体を、式(III):
R3は、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、(O)nC1−4アルキレンNR14R15、または場合により1または複数のヒドロキシもしくはNR10R11基によって置換されていてもよいC1−6アルキルを表し、
R4およびR5は独立して、水素、ヒドロキシ、NR10R11、C3−6シクロアルキル、C1−6アルコキシ、C1−6フルオロアルキル、C2−6アルケニル、COOR12、COR13、または場合により1または複数のヒドロキシもしくはNR10R11基によって置換されていてもよいC1−6アルキルを表し、
Xは、金属ハロ部分を表す]
で表される化合物またはその保護された誘導体で処理する工程;
ii)場合によって、その後生成物の複素環上の第3アルコール基を別の置換基に変換する工程;
iii)場合によって、その後脱保護する工程;
を含んでなる上記方法。 - 化学療法における、または放射線増感剤もしくは化学療法増感剤としての、1種以上の式(I)の化合物の使用。
- 1種以上の式(I)の化合物またはその薬学的に許容可能な塩もしくは誘導体を、場合により担体および/または賦形剤と共に、被験者に投与することを含んでなる、疾患の治療、予防または改善方法。
- 前記疾患が癌または腫瘍塊である、請求項13に記載の方法。
- 前記癌または腫瘍塊が上皮由来(前立腺癌、卵巣癌、子宮頸癌、乳癌、胆のう癌、膵臓癌、結腸直腸癌、腎臓癌および非小肺癌細胞を含む)、間葉由来(メラノーマ、中皮腫および肉腫癌細胞を含む)、または神経由来(神経膠腫癌細胞を含む)である、請求項14に記載の方法。
- 疾患または障害を治療する医薬の製造における、1種以上の式(I)の化合物またはその薬学的に許容可能な塩もしくは誘導体の使用。
- 1種以上の式(I)の化合物またはその薬学的に許容可能な塩もしくは誘導体を含む、疾患または障害を治療、予防または改善するための薬剤。
- 1種以上の式(I)の化合物またはその薬学的に許容可能な塩もしくは誘導体を、1種以上の製薬上の担体、賦形剤、補助剤および/または希釈剤と共に含有する医薬組成物。
- 別の化学療法剤をさらに含む、請求項18に記載の医薬組成物。
- 1種以上の式(I)の化合物またはその薬学的に許容可能な塩もしくは誘導体を含有する飲料または食品。
- 実施例および/または添付の図面に関して本明細書に記載した式(I)の化合物またはその薬学的に許容可能な塩。
- 本明細書に記載した式(II)、(III)または(IV)の化合物、その薬学的に許容可能な塩、および/またはその使用。
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