JP5856069B2 - 新規なシチジン系代謝拮抗剤の高分子誘導体 - Google Patents
新規なシチジン系代謝拮抗剤の高分子誘導体 Download PDFInfo
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- JP5856069B2 JP5856069B2 JP2012544274A JP2012544274A JP5856069B2 JP 5856069 B2 JP5856069 B2 JP 5856069B2 JP 2012544274 A JP2012544274 A JP 2012544274A JP 2012544274 A JP2012544274 A JP 2012544274A JP 5856069 B2 JP5856069 B2 JP 5856069B2
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- cytidine
- compound
- antimetabolite
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Description
(1)ポリエチレングリコール構造部分と10以上のカルボキシ基を有するポリマーとのブロック共重合体の側鎖カルボキシ基に,一般式(I)あるいは一般式(II)
(3)ポリアミノ酸がポリグルタミン酸である前記(2)に記載のシチジン系代謝拮抗剤の高分子誘導体。
で表わされる置換基を示し,bは5〜11500の整数を示し,p及びqはそれぞれ独立に1〜3の整数を示し,iは5〜200の整数を示し,nは0〜200の整数を示し,且つi+nは10〜300の整数を示す]
で表される化合物である前記(1)〜(3)のいずれか1つに記載のシチジン系代謝拮抗剤の高分子誘導体。
で表される結合基,R4が(C1〜C3)アシル基であり,bが100〜300の整数であり,R3によりp及びqはそれぞれ1又は2であり,iが5〜90の整数,nが0〜90の整数で,且つi+nが10〜100の整数である前記(4)に記載のシチジン系代謝拮抗剤の高分子誘導体。
(7)シチジン系代謝拮抗剤がゲムシタビン,5’−デオキシ−5−フルオロシチジン,シタラビン又は3’−エチニルシチジンである前記(1)〜(6)のいずれか1つに記載のシチジン系代謝拮抗剤の高分子誘導体。
(9)前記(1)〜(7)のいずれか1つに記載のシチジン系代謝拮抗剤の高分子誘導体を薬効成分とする抗ウイルス剤。
(10)水中でミセルを形成することを特徴とする前記(1)〜(9)のいずれか1つに記載のシチジン系代謝拮抗剤の高分子誘導体。
該カルボキシ基を有するポリマーとして好ましくは,ポリアミノ酸又はその誘導体が挙げられ,ポリ酸性アミノ酸であるポリグルタミン酸が特に好ましい。
該置換基におけるR7,R8としては両者共に水素原子が特に好ましい。
置換基を有していてもよい(C1〜C40)アルキル基における(C1〜C40)アルキル基としては直鎖状でも分岐していてもよく,例えば,メチル基,エチル基,n−プロピル基,イソプロピル基,n−ブチル基,s−ブチル基,イソブチル基,n−ペンチル基,n−ヘキシル基,n−ステアリル基等が挙げられ,該置換基としては,例えば,フェニル基,ナフチル基,メトキシ基,エトキシ基,ジメチルアミノ基,アダマンチル基等が挙げられる。置換位置は置換可能であれば特に限定されない。
以下に,ゲムシタビン,5’−デオキシ−5−フルオロシチジン,シタラビン,3’−エチニルシチジンについて構造式を示す。
式(III)におけるR1としてはメチル基が特に好ましい。
式(III)におけるR4としてはアセチル基が特に好ましい。
該結合基としては,例えば,前記の式(IV),式(V),式(VI)で表される基が挙げられる。ここでメチレン数rは1〜6の整数であり,2〜4が好ましく,3が特に好ましい。
R3の結合基としては式(IV)[r=3]で表されるトリメチレン基が殊更好ましい。
一般式(III)におけるポリグルタミン酸の各構成部分は,その結合順は限定されず,ブロック型でもランダム型でもよい。
本発明のシチジン系代謝拮抗剤の高分子誘導体中の一般式(I)あるいは一般式(II)の置換基は,1分子中にそれぞれが混在していても一方のみであってもよく,R6,R7,R8の基も1分子中で同一であっても異なっていてもよい。
まず,前記一般式(I)あるいは一般式(II)で表されるリンカー部分の付いたシチジン系代謝拮抗剤誘導体を製造する。即ち,保護したアミノ基とカルボキシ基を有するコハク酸モノアミド誘導体又は保護したアミノ基とカルボキシ基を有するマレイン酸モノアミド誘導体と,シチジン系代謝拮抗剤とを有機溶媒中,脱水縮合剤を用いてシチジン系代謝拮抗剤の4位アミノ基とアミド結合させ,保護基を脱保護して,アミノ基を有しシチジン系代謝拮抗剤が結合したコハク酸モノアミド誘導体又はアミノ基を有しシチジン系代謝拮抗剤が結合したマレイン酸モノアミド誘導体を得る。
次いで,文献に記載又はそれを応用して得られるポリエチレングリコール構造部分とポリグルタミン酸とのブロック共重合体の側鎖カルボキシ基と該誘導体を有機溶媒中,脱水縮合剤を用いてアミド結合させる方法である。
次いで,Bocを脱保護し国際公開2006/120914号パンフレットに記載の方法によって調製されるメトキシポリエチレングリコール−ポリグルタミン酸ブロック共重合体と,前記と同様な溶媒中,前記と同様な脱水縮合剤を用い,必要に応じて反応補助剤を使用してアミド結合させ,本発明のシチジン系代謝拮抗剤の高分子誘導体とする。
本発明のシチジン系代謝拮抗剤の高分子誘導体の使用に際し,本発明のシチジン系代謝拮抗剤の高分子誘導体に含まれる2以上の化合物を混ぜて使用してもよい。
4.27gのN−(tert−ブトキシカルボニル)アスパラギン酸−4−ベンジルエステル((株)ペプチド研究所製)と2.1mLの1−フェニルブチルアミンを40mLのDMFに溶解後,2.70gのWSC塩酸塩と1.93gのHOBtを加え,室温にて6時間攪拌した。反応液に水を加え,酢酸エチルにて抽出し,有機層を飽和炭酸水素ナトリウム水溶液で洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物1を3.94g得た。
MS:m/z 477(M+Na)+:C26H34N2O5(M+Na)+としての計算値 477
合成例1で得られた3.50gの化合物1を酢酸エチル15mLに溶解し,5%パラジウム炭素(水分含量50%)0.656gを加えた後,系内を水素置換し,室温にて一夜攪拌し水素化分解した。5%パラジウム炭素を濾過し,酢酸エチル80mLで洗浄後,有機層を併せ,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物2を2.58g得た。
MS:m/z 387(M+Na)+:C19H28N2O5(M+Na)+としての計算値 387
合成例2で得られた754mgの化合物2,500mgの3’−エチニルシチジン及び275mgのHOBtを4mLのDMFに溶解後,系内をアルゴン置換し,353mgのWSC塩酸塩を加えて20℃にて10時間攪拌した。次いで,377mgの化合物2と177mgのWSC塩酸塩を加えて20℃にて3時間,続いて177mgのWSC塩酸塩を加えて20℃にて2時間,更に,189mgの化合物2と177mgのWSC塩酸塩を加えて20℃にて2時間攪拌した。反応液に水を加え酢酸エチルにて抽出し,有機層を飽和塩化アンモニウム水溶液,飽和炭酸水素ナトリウム水溶液,飽和塩化ナトリウム水溶液で順次洗浄した。硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,得られた油状物をシリカゲルカラムクロマトグラフィー(CHCl3/MeOH)にて精製し,化合物3を716mg得た。
1H−NMR(400MHz,DMSO−d6,ppm):1.35(s,9H),1.3−1.6(m,4H),2.55(m,2H),2.6−2.7(m,2H),3.06(m,2H),3.16(s,1H),3.54(s,1H),3.6−3.7(m,2H),3.96(m,1H),4.14(d,1H),4.3(br,1H),5.0(br,1H),5.87(d,1H),5.93(br,1H),7.01(d,1H),7.1−7.2(m,5H),7.80(br,1H),8.31(d,1H),10.87(s,1H)
MS:m/z 614(M+H)+:C29H37N5O9(M+H)+としての計算値 614
合成例3で得られた860mgの化合物3を酢酸エチル3.5mLに溶解後,3.5mLの4N−HCl/AcOEtを加えて室温にて1時間攪拌した。反応終了後,減圧下で酢酸エチルを留去して化合物4を710mg得た。
MS:m/z 514(M+H)+:C25H31N5O7(M+H)+としての計算値 514
国際公開2006/120914号パンフレットに記載された方法によって調製した503mgのメトキシポリエチレングリコール−ポリグルタミン酸ブロック共重合体を9mLのDMFに溶解した。合成例4で得られた600mgの化合物4,197μLのトリエチルアミン,227μLのDIPCI及び96mgのHOBtを加えて,20℃にて24時間攪拌した。更に,55μLのトリエチルアミンと114μLのDIPCIを加えて3時間攪拌後,反応液をエタノール9mL及びジイソプロピルエーテル72mLの混合溶液にゆっくり滴下した。室温にて1時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/8(v/v),20mL)で洗浄した。沈析物をアセトニトリル12mLに溶かし,エタノール15mL及びジイソプロピルエーテル90mLの混合溶液にゆっくり滴下し室温にて1時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/8(v/v),20mL)で洗浄した。沈析物をアセトニトリル10mL及び水10mLに溶解し,イオン交換樹脂(ダウケミカル製ダウエックス50(H+),2mL)を加え攪拌し,樹脂を濾取してアセトニトリル/水(1/1(v/v),30mL)にて洗浄した。得られた溶液からアセトニトリルを減圧下留去し,次いで凍結乾燥して化合物5を580mg得た。
4.27gのN−(tert−ブトキシカルボニル)アスパラギン酸−4−ベンジルエステルと1.31mLのn−ブチルアミンを25mLのDMFに溶解後,2.93gのWSC塩酸塩と1.93gのHOBtを加え,室温にて一夜攪拌した。反応液に水を加え,酢酸エチルにて抽出し,有機層を飽和塩化アンモニウム水溶液,飽和炭酸水素ナトリウム水溶液で洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物6を5.12g得た。
合成例5で得られた5.09gの化合物6を酢酸エチル15mLに溶解し,5%パラジウム炭素(水分含量50%)0.656gを加えた後,系内を水素置換し,室温にて一夜攪拌し水素化分解した。5%パラジウム炭素を濾過し,酢酸エチルで洗浄後,有機層を併せ,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物7を4.05g得た。
合成例6で得られた596mgの化合物7,500mgの3’−エチニルシチジン及び275mgのHOBtを4mLのDMFに溶解後,系内をアルゴン置換し,353mgのWSC塩酸塩を加えて20℃にて9時間攪拌した。次いで,298mgの化合物7と177mgのWSC塩酸塩を加えて20℃にて3時間,更に,298mgの化合物7と177mgのWSC塩酸塩を加えて20℃にて3時間攪拌した。反応液に水を加え酢酸エチルにて抽出し,有機層を飽和塩化アンモニウム水溶液,飽和炭酸水素ナトリウム水溶液,飽和塩化ナトリウム水溶液で順次洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,得られた油状物をシリカゲルカラムクロマトグラフィー(CHCl3/MeOH)にて精製し,化合物8を590mg得た。
1H−NMR(400MHz,DMSO−d6,ppm):0.85(t,3H),1.2−1.3(m,4H),1.36(s,9H),2.5−2.7(m,2H),3.03(m,2H),3.53(s,1H),3.6−3.7(m,2H),3.96(m,1H),4.14(m,1H),4.28(m,1H),5.08(m,1H),5.87(d,1H),5.92(m,2H),7.00(d,1H),7.20(d,1H),7.75(m,1H),8.32(d,1H),10.86(s,1H)
MS:m/z 538(M+H)+:C23H33N5O9(M+H)+としての計算値 538
合成例7で得られた590mgの化合物8を酢酸エチル3mLに溶解後,2.7mLの4N−HCl/AcOEtを加え室温にて1時間攪拌した。反応終了後,減圧下で酢酸エチルを留去して化合物9を500mg得た。
MS:m/z 438(M+H)+:C19H27N5O7(M+H)+としての計算値 438
国際公開2006/120914号パンフレットに記載された方法によって調製した438mgのメトキシポリエチレングリコール−ポリグルタミン酸ブロック共重合体を8mLのDMFに溶解し,35℃にて15分攪拌後,20℃にて1時間攪拌した。合成例8で得られた450mgの化合物9,172μLのトリエチルアミン,198μLのDIPCI及び84mgのHOBtを加えて,20℃にて24時間攪拌した。更に,48μLのトリエチルアミンと99μLのDIPCIを加えて3時間攪拌後,反応液をエタノール8mL及びジイソプロピルエーテル64mLの混合溶液にゆっくり滴下した。室温にて1時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/8(v/v),18mL)で洗浄した。沈析物を1mlのDMF及び7mLのアセトニトリルの混合溶媒に溶解し,エタノール8mL及びジイソプロピルエーテル64mLの混合溶液にゆっくり滴下し,室温にて1時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/8(v/v),18mL)で洗浄した。沈析物をアセトニトリル13.5mL及び水4.5mLに溶解後,イオン交換樹脂(ダウケミカル製ダウエックス50(H+),5mL)を加え攪拌し,樹脂を濾取してアセトニトリル/水(1/1(v/v),25mL)にて洗浄した。得られた溶液からアセトニトリルを減圧下留去し,次いで凍結乾燥して化合物10を560mg得た。
10.3gのN−(tert−ブトキシカルボニル)アスパラギン酸−4−ベンジルエステルと5.17gの1−アダマンタンメチルアミンを100mLのDMFに溶解後,7.15gmのWSC塩酸塩と4.72gのHOBtを加え,室温にて一夜攪拌した。反応液に水を加え,酢酸エチルにて抽出し,有機層を飽和炭酸水素ナトリウム水溶液で洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物11を15.0g得た。
1H−NMR(400MHz,CDCl3,ppm):1.42(s,6H),1.46(s,9H),1.61(d,3H),1.70(d,3H),1.97(s,3H),2.71−2.76(m,1H),2.91−2.96(m,2H),3.03(dd,1H),4.50(br,1H),5.11(d,1H),5.16(d,1H),5.74(br,1H),6.56(br,1H),7.38−7.31(m,5H)
MS:m/z 493(M+Na)+:C27H38N2O5(M+Na)+としての計算値 493
合成例9で得られた15.0gの化合物11を酢酸エチル75mLに溶解し,10%パラジウム炭素(水分含量50%)1.5gを加えた後,系内を水素置換し,室温にて2日間攪拌し水素化分解した。10%パラジウム炭素を濾過し,酢酸エチル20mLで洗浄後,有機層を併せ,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物12を9.22g得た。
1H−NMR(400MHz,CDCl3,ppm):1.46(s,15H),1.61(d,3H),1.70(d,3H),1.96(s,3H),2.71−2.77(m,1H),2.89−3.06(m,3H)4.49(br,1H),5.76(br,1H),6.77(br,1H)
MS:m/z 403(M+Na)+:C20H32N2O5(M+Na)+としての計算値 403
合成例10で得られた1.88gの化合物12,1.10gの3’−エチニルシチジン及び658mgのHOBtを20mLのDMFに溶解後,凍結脱気を行った。914mgのWSC塩酸塩を加えて20℃にて9時間攪拌した。次いで,313mgの化合物12と141mgのWSC塩酸塩を加えて20℃にて2時間攪拌した。反応液に水を加え,酢酸エチルにて抽出し,有機層を飽和塩化アンモニウム水溶液,飽和炭酸水素ナトリウム水溶液で洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,得られた油状物をシリカゲルカラムクロマトグラフィー(CHCl3/n−Hexane)にて精製し,化合物13を1.47g得た。
1H−NMR(400MHz,CDCl3,ppm):1.41(s,9H),1.45(s,6H),1.58(d,3H),1.67(d,3H),1.93(s,3H),2.64(br,2H),2.92−3.22(m,5H),4.00(br,1H),4.30(br,1H),4.49(br,1H),4.68(br,1H),5.18(br,1H),5.85(br,1H),5.26(br,1H),7.01(br,1H),7.45(br,1H),7.71(br,1H),8.22(br,1H),10.5(br,1H)
MS:m/z 630(M+H)+:C31H43N5O9(M+H)+としての計算値 630
合成例11で得られた1.47gの化合物13を酢酸エチル6mLに溶解後,6mLの4N−HCl/AcOEtを加えて室温にて1時間攪拌した。反応終了後,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物14を1.20g得た。
1H−NMR(400MHz,CD3OD,ppm):1.57(s,6H),1.70(br,3H),1.79(br,3H),2.00(s,3H),2.82(br,2H),3.15−3.20(m,5H),4.05(br,1H),4.22(br,1H),4.36(br,1H),6.04(br,1H),7.37(br,1H),8.60(br,1H)
MS:m/z 530(M+H)+:C26H35N5O7(M+H)+としての計算値 530
国際公開2006/120914号パンフレットに記載された方法によって調製した489mgのメトキシポリエチレングリコール−ポリグルタミン酸ブロック共重合体を10mLのDMFに溶解した。合成例12で得られた600mgの化合物14,192μLのトリエチルアミン,221μLのDIPCI及び94.0mgのHOBtを加えて,20℃にて19時間攪拌した。更に,53μLのトリエチルアミンと55μLのDIPCIを加えて4時間攪拌後,反応液をエタノール10mL及びジイソプロピルエーテル90mLの混合溶液にゆっくり滴下した。室温にて1時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/9(v/v),10mL)で洗浄した。沈析物を8mLのDMFに溶かし,エタノール10mL及びジイソプロピルエーテル90mLの混合溶液にゆっくり滴下し,室温にて1時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/9(v/v),4mL)で洗浄した。沈析物をアセトニトリル10mL及び水10mLに溶解後,イオン交換樹脂(ダウケミカル製ダウエックス50(H+),1mL)を加え攪拌し,樹脂を濾取してアセトニトリル/水(1/1(v/v),10mL)にて洗浄した。得られた溶液からアセトニトリルを減圧下留去し,次いで凍結乾燥することにより化合物15を775mg得た。
5.03gのフェニルアラニンと22.8gの4−フェニル−1−ブタノールを1,4−ジオキサン17mL中に加え,17mLの4N−HCl/1,4−dioxaneを加えて室温にて4日間攪拌した。濾過をして濾液にジエチルエーテル450mLを加えて室温にて1.5時間攪拌した。沈析物を濾取し,ジエチルエーテル50mLで洗浄後,真空乾燥して化合物16を5.90g得た。
1H−NMR(400MHz,CDCl3,ppm):1.44−1.55(m,4H),2.53(t,2H),3.31(dd,2H),3.44(dd,2H),4.05(t,2H),4.44(dd,1H),7.11−7.29(m,10H),8.74(br,2H)
MS:m/z 298(M+H)+:C19H23NO2(M+H)+としての計算値 298
2.08gのN−(tert−ブトキシカルボニル)アスパラギン酸−4−ベンジルエステルと合成例13で得られた2.18gの化合物16を20mLのDMFに溶解後,1.43gのWSC塩酸塩と0.943gのHOBtを加えて,室温にて一夜攪拌した。反応液に水を加え,酢酸エチルにて抽出し,有機層を飽和炭酸水素ナトリウム水溶液で洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し、次いで真空乾燥して化合物17を1.18g得た。
1H−NMR(400MHz,CDCl3,ppm):1.42(s,6H),1.57−1.61(m,4H),2.60(t,2H),2.69(dd,1H),3.02−3.08(m,3H),4.04−4.13(m,2H),4.52(br,1H),4.78(dd,1H),5.11(d,1H),5.14(d,1H),5.62(br,1H),6.95(br,1H),7.12−7.38(m,15H)
MS:m/z 625(M+Na)+:C35H42N2O7(M+Na)+としての計算値 625
合成例14で得られた1.18gの化合物17を酢酸エチル5mLに溶解し,10%パラジウム炭素(水分含量50%)0.118gを加えた後,系内を水素置換し,室温にて一夜攪拌した。10%パラジウム炭素を濾過し,酢酸エチル20mLで洗浄後,有機層を併せ,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物18を1.18g得た。
1H−NMR(400MHz,CDCl3,ppm):1.42(s,19H),1.58(m,4H),2.60(t,2H),2.70(dd,1H),2.98−3.09(m,3H),4.03−4.12(m,2H),4.52(br,1H),4.79(dd,1H),5.61(d,1H),7.06−7.38(m,11H)
MS:m/z 535(M+Na)+:C28H36N2O7(M+Na)+としての計算値 535
合成例15で得られた200mgの化合物18,87.0mgの3’−エチニルシチジン及び55.0mgのHOBtを2mLのDMFに溶解後,凍結脱気を行った。次いで,70.6mgのWSC塩酸塩を加えて20℃にて6時間攪拌した。続いて,35.3mgのWSC塩酸塩を加え,20℃にて2時間攪拌した。反応液に水を加え,酢酸エチルにて抽出し,有機層を飽和塩化アンモニウム水溶液,飽和炭酸水素ナトリウム水溶液で洗浄し,硫酸マグネシウムで乾燥後,減圧下で酢酸エチルを留去し,得られた油状物をシリカゲルカラムクロマトグラフィー(CHCl3/n−Hexane)にて精製し,化合物19を155mg得た。
MS:m/z 784(M+Na)+:C39H47N5O11(M+Na)+としての計算値 784
合成例16で得られた155mgの化合物19を酢酸エチル1mLに溶解後,510μLの4N−HCl/AcOEtを加えて室温にて1時間攪拌した。反応終了後,減圧下で酢酸エチルを留去し,次いで真空乾燥して化合物20を105mg得た。
1H−NMR(400MHz,DMSO−d6,ppm):1.51(s,4H),2.22−2.24(m,3H),2.78−3.07(m,4H),3.31−4.18(m,6H),4.50(s,1H),5.83(d,1H),5.89(d,1H),6.28(br,1H),7.19−7.26(m,11H),8.34(br,2H),8.94(s,1H),9.09(br,2H),10.1(br,1H),11.3(br,1H)
MS:m/z 684(M+Na)+:C34H39N5O9(M+Na)+としての計算値 684
国際公開2006/120914号パンフレットに記載された方法によって調製した66mgのメトキシポリエチレングリコール−ポリグルタミン酸ブロック共重合体を2mLのDMFに溶解した。合成例17で得られた100mgの化合物20,23μLのトリエチルアミン,39μLのDIPCI及び13mgのHOBtを加えて20℃にて4時間攪拌した。更に,19μLのトリエチルアミンと20μLのDIPCIを加えて16時間攪拌後,反応液をエタノール4mL及びジイソプロピルエーテル36mLの混合溶液にゆっくり滴下した。室温にて0.5時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/9(v/v),4mL)で洗浄した。沈析物を少量のDMFに溶かし,酢酸エチル4mL及びジイソプロピルエーテル24mLの混合溶液にゆっくり滴下し室温にて3時間攪拌し,沈析物を濾取して酢酸エチル/ジイソプロピルエーテル(1/6(v/v),4mL)で洗浄した。沈析物をアセトニトリル2.5mL及び水2.5mLに溶解後,イオン交換樹脂(ダウケミカル製ダウエックス50(H+),0.5mL)を加え攪拌し,樹脂を濾取してアセトニトリル/水(1/1(v/v),3mL)にて洗浄した。得られた溶液からアセトニトリルを減圧下留去し,次いで凍結乾燥して化合物21を36.5mg得た。
国際公開2006/120914号パンフレットに記載された方法を応用して(メトキシポリエチレングリコール)2アミン(SUNBRIGHT GL2−100PA;日油(株)製)から調製した413mgの(メトキシポリエチレングリコール)2−ポリグルタミン酸ブロック共重合体を8.3mLのDMFに溶解した。次いで,合成例12で得られた570mgの化合物14,183μLのトリエチルアミン,210μLのDIPCI及び89mgのHOBtを加えて,20℃にて17時間攪拌した。更に,51μLのトリエチルアミンと105μLのDIPCIを加えて3時間攪拌後,反応液をエタノール10mL及びジイソプロピルエーテル90mLの混合溶液にゆっくり滴下した。室温にて0.5時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/9(v/v),10mL)で洗浄した。沈析物を8mLのDMFに溶かし,エタノール10mL及びジイソプロピルエーテル90mLの混合溶液にゆっくり滴下し,室温にて0.5時間攪拌し,沈析物を濾取してエタノール/ジイソプロピルエーテル(1/9(v/v),4mL)で洗浄した。沈析物をアセトニトリル35mL及び水17.5mLに溶解し,イオン交換樹脂(ダウケミカル製ダウエックス50(H+),5mL)を加え攪拌し,樹脂を濾取してアセトニトリル/水(1/1(v/v),10mL×2)にて洗浄した。得られた溶液からアセトニトリルを減圧下留去し,次いで凍結乾燥することにより化合物22を685mg得た。
化合物5,化合物10,化合物15,化合物21及び化合物22と,比較化合物として国際公開第2006/120914号パンフレット記載の方法で作成したポリエチレングリコール−ポリグルタミン酸ブロック共重合体に3’−エチニルシチジン誘導体が結合しているPEG−Glu−ECyd,ポリエチレングリコール−ポリグルタミン酸ブロック共重合体に3’−エチニルシチジンとフェニルアラニンベンジルエステルが結合しているPEG−Glu−(ECyd,PheOBzl)をそれぞれPBS溶液(リン酸緩衝生理食塩水;pH7.4)に1mg/mLの濃度で溶解し,37℃にてインキュベートした。各高分子誘導体から放出された3’−エチニルシチジンを,HPLCを用いて定量した。定量値と高分子誘導体の薬剤含有量から求めた高分子誘導体中の全薬剤量との比を図1〜図3に示した。
ラット皮下で継代しているヒト肺癌LC−11−JCKを約2mm角のブロックにし,套管針を用いてF344ヌードラットの背側部皮下に移植した。腫瘍移植後13日目から本発明の高分子誘導体(化合物5,化合物10)を表1に示す投与量で静脈内に単回投与した。又,対照薬(3’−エチニルシチジン;ECyd)は,Alzet pumpを用い24時間かけて皮下にinfusion投与した。なお,各化合物は5%ブドウ糖溶液で溶解して使用した。投与量は,体重変動が最大減少率10%程度までを最大投与量として,その投与量より投与を行った。
Claims (8)
- ポリエチレングリコール構造部分と10以上のカルボキシ基を有するポリマーであるポリグルタミン酸とのブロック共重合体の側鎖カルボキシ基に,一般式(I)あるいは一般式(II)
- R1がメチル基,R3がトリメチレン基,R4がアセチル基,R5におけるR7,R8が共に水素原子であり,CX−CYがCH−CHである請求項3に記載のシチジン系代謝拮抗剤の高分子誘導体。
- シチジン系代謝拮抗剤がゲムシタビン,5’−デオキシ−5−フルオロシチジン,シタラビン又は3’−エチニルシチジンである請求項1〜4のいずれか一項に記載のシチジン系代謝拮抗剤の高分子誘導体。
- 請求項1〜5のいずれか一項に記載のシチジン系代謝拮抗剤の高分子誘導体を薬効成分とする抗がん剤。
- 請求項1〜5のいずれか一項に記載のシチジン系代謝拮抗剤の高分子誘導体を薬効成分とする抗ウイルス剤。
- 水中でミセルを形成することを特徴とする請求項1〜7のいずれか一項に記載のシチジン系代謝拮抗剤の高分子誘導体。
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JP5349318B2 (ja) | 2007-09-28 | 2013-11-20 | 日本化薬株式会社 | ステロイド類の高分子結合体 |
EP2258397B1 (en) * | 2008-03-18 | 2017-10-11 | Nippon Kayaku Kabushiki Kaisha | Polymer conjugate of physiologically active substance |
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CN102421827B (zh) | 2009-05-15 | 2014-07-30 | 日本化药株式会社 | 具有羟基的生理活性物质的高分子结合体 |
EP2754682B1 (en) | 2011-09-11 | 2017-06-07 | Nippon Kayaku Kabushiki Kaisha | Method for manufacturing block copolymer |
JP6223995B2 (ja) * | 2012-11-08 | 2017-11-01 | 日本化薬株式会社 | カンプトテシン類と抗癌効果増強剤の結合した高分子化合物及びその用途 |
JP2017160125A (ja) * | 2014-08-04 | 2017-09-14 | 日本化薬株式会社 | 核酸代謝拮抗剤が結合したポリアミノ酸誘導体。 |
JP6640736B2 (ja) * | 2014-12-12 | 2020-02-05 | 日本化薬株式会社 | 核酸代謝拮抗剤が結合した多分岐化合物 |
RU2732612C2 (ru) * | 2015-02-23 | 2020-09-21 | Ниппон Каяку Кабусики Каися | Блок-сополимерный конъюгат физиологически активного вещества |
CN106117561B (zh) * | 2016-06-27 | 2020-03-13 | 中国科学院长春应用化学研究所 | 一种吉西他滨衍生物及其制备方法 |
EP3338806A1 (en) * | 2016-12-21 | 2018-06-27 | Université de Namur | Method for functionalising nanoparticles |
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- 2011-11-16 EP EP11841714.6A patent/EP2641605B1/en not_active Not-in-force
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WO2006033296A1 (ja) * | 2004-09-22 | 2006-03-30 | Nippon Kayaku Kabushiki Kaisha | 新規ブロック共重合体、ミセル調製物及びそれを有効成分とする抗癌剤 |
WO2006120914A1 (ja) * | 2005-05-11 | 2006-11-16 | Nippon Kayaku Kabushiki Kaisha | シチジン系代謝拮抗剤の高分子誘導体 |
WO2008056596A1 (en) * | 2006-11-06 | 2008-05-15 | Nippon Kayaku Kabushiki Kaisha | Polymeric derivative of nucleic acid metabolic antagonist |
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WO2010131675A1 (ja) * | 2009-05-15 | 2010-11-18 | 日本化薬株式会社 | 水酸基を有する生理活性物質の高分子結合体 |
Also Published As
Publication number | Publication date |
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US9018323B2 (en) | 2015-04-28 |
WO2012067138A1 (ja) | 2012-05-24 |
EP2641605A1 (en) | 2013-09-25 |
KR20140024833A (ko) | 2014-03-03 |
EP2641605A4 (en) | 2015-04-22 |
JPWO2012067138A1 (ja) | 2014-05-12 |
EP2641605B1 (en) | 2018-03-07 |
US20130331517A1 (en) | 2013-12-12 |
TW201304805A (zh) | 2013-02-01 |
CN103221054A (zh) | 2013-07-24 |
CA2816997A1 (en) | 2012-05-24 |
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