JP6162349B1 - 5−アザシチジン類の糖部シリルエーテル誘導体 - Google Patents
5−アザシチジン類の糖部シリルエーテル誘導体 Download PDFInfo
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- JP6162349B1 JP6162349B1 JP2016565699A JP2016565699A JP6162349B1 JP 6162349 B1 JP6162349 B1 JP 6162349B1 JP 2016565699 A JP2016565699 A JP 2016565699A JP 2016565699 A JP2016565699 A JP 2016565699A JP 6162349 B1 JP6162349 B1 JP 6162349B1
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- azacytidine
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- 229960002756 azacitidine Drugs 0.000 claims abstract description 37
- NMUSYJAQQFHJEW-UHFFFAOYSA-N 5-Azacytidine Natural products O=C1N=C(N)N=CN1C1C(O)C(O)C(CO)O1 NMUSYJAQQFHJEW-UHFFFAOYSA-N 0.000 claims abstract description 29
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Abstract
Description
〔1〕
式(1):
(式中、Rは、OR3基又は水素原子であり、R1、R2及びR3は、それぞれ水素原子又は式(2):
(式中、R4、R5及びR6は、それぞれ置換基を有していてもよいアルキル基、置換基を有していてもよいアリール基又は置換基を有していてもよいアリールアルキル基である。)で表されるシリル基である。ただし、R1、R2及びR3が、同時に水素原子である場合を除く。)で表される化合物又は其の塩。
〔2〕
前記R1が、式(2)で表されるシリル基であり、前記R2及びR3が、水素原子である、〔1〕に記載の化合物。
〔3〕
前記R1及びR2が、それぞれ式(2)で表されるシリル基であり、前記R3が、水素原子である、〔1〕に記載の化合物。
〔4〕
前記R1、R2及びR3が、それぞれ式(2)で表されるシリル基である、〔1〕に記載の化合物。
〔5〕
前記R1が、水素原子であり、R2及びR3が、それぞれ式(2)で表されるシリル基である、〔1〕に記載の化合物。
〔6〕
前記R4、R5及びR6が、それぞれ置換基を有していてもよいC1〜C8アルキル、置換基を有していてもよいC6〜C10アリール基又は置換基を有していてもよいC7〜C14アリールアルキル基である、〔1〕に記載の化合物。
〔7〕
前記C6〜C10アリール基がフェニル基又はナフチル基である、〔6〕に記載の化合物。
〔8〕
C7〜C14アリールアルキル基がベンジル基,フェネチル基又はナフチルメチル基である、〔6〕に記載の化合物。
〔9〕
5−アザシチジン又は2’−デオキシ−5−アザシチジンをシリルハライド化合物と反応させることを包含する、〔1〕に記載の化合物又は其の塩の製造方法。
〔10〕
〔1〕ないし〔8〕のいずれかの化合物又は其の塩を含有する医薬組成物。
〔11〕
骨髄腫瘍細胞の増殖抑制剤である、〔10〕に記載の医薬組成物。
〔12〕
骨髄異形成症候群を含む様々な骨髄腫瘍の予防又は治療剤である、〔10〕に記載の医薬組成物。
〔13〕
〔1〕ないし〔8〕のいずれかの化合物又は其の塩の有効量を哺乳動物に投与することを包含する、哺乳動物における骨髄腫瘍細胞の増殖抑制方法。
〔14〕
〔1〕ないし〔8〕のいずれかの化合物又は其の塩の有効量を哺乳動物に投与することを包含する、哺乳動物における骨髄異形成症候群を含む様々な骨髄腫瘍の予防又は治療方法。
本発明の化合物は、下記の式(1)で表される化合物である。
ここで、式中、Rは、OR3基又は水素原子であり、R1、R2及びR3は、それぞれ水素原子又は式(2):
(式中、R4、R5及びR6は、それぞれ置換基を有していてもよいアルキル基、置換基を有していてもよいアリール基又は置換基を有していてもよいアリールアルキル基である。)で表されるシリル基である。ただし、R1、R2及びR3が、同時に水素原子である場合を除く。
本発明の化合物(1)は、例えば、以下に示す方法又はこれに準じた方法など(例えば、Corey, E.J. et al., J. Am. Chem. Soc., 94, 6190, 1972; Morita, T. et al., Tetrahedron Lett., 21, 835, 1980; Y. Kita, et al., Tetrahedron Lett., 4311, 1979に記載されたシリルエーテル化など。総説として、Lalonde, M.,Chan, T.H., Synthesis, 817−845, 1985なども参照のこと)によって製造することができる。
シリルハライド化合物の種類は特に限定されず、当業界で用いられるものはいずれも本発明の方法に使用できる。例えば、トリアルキルシリルハライド化合物、モノアルキルジアリールシリルハライド化合物、トリアリールシリルハライド化合物などを用いることができる。シリルハライド化合物がアルキル基を有する場合には、アルキル基として、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、sec−ブチル基、イソブチル基、又はtert−ブチル基などを用いることができる。これらのうち、メチル基又はエチル基が好ましい。シリルハライド化合物がアリール基を有する場合にはフェニル基などを用いることができる。シリルハライド化合物を構成するハロゲン原子としては、塩素原子、臭素原子、又はヨウ素原子などを用いることができ、塩素原子を用いることが好ましい。シリルハライド化合物として、より具体的には、トリメチルシリルクロライド(トリメチルクロロシランと呼ばれる場合もある。以下の化合物についても同様である)、トリエチルシリルクロライド、tert−ブチルジメチルシリルクロライド、tert−ブチルジフェニルシリルクロライド、トリフェニルシリルクロライドなどを挙げることができる。
反応の円滑な進行等の観点から、本発明の反応は溶媒の存在下で実施することが好ましい。本発明の反応における溶媒は、反応が進行する限りは、いずれの溶媒でもよい。
本発明の反応温度は、特に制限されない。一つの態様においては、収率の向上、副生成物の抑制、及び経済効率等の観点から、−20℃〜50℃(すなわち、マイナス20℃〜プラス50℃)、好ましくは−10℃〜30℃(すなわち、マイナス10℃〜プラス30℃)の範囲を例示できる。
本発明の反応時間は、特に制限されない。一つの態様においては、収率の向上、副生成物の抑制、及び経済効率等の観点から、0.5時間〜120時間、好ましくは1時間〜72時間、より好ましくは1時間〜48時間、さらに好ましくは1時間〜24時間の範囲を例示できる。しかしながら、本発明の反応時間は当業者により適切に調整されることができる。
本発明の化合物(1)は、そのまま、あるいは自体公知の方法により薬理学的に許容される担体と混合して医薬組成物とすることにより、哺乳動物(例、ヒト、サル、ネコ、ブタ、ウマ、ウシ、マウス、ラット、モルモット、イヌ、ウサギなど)に対して安全な医薬として用いることができる。
本発明の化合物(1)は多くの治療的及び予防的用途を有する。好ましい実施態様では、本発明の化合物(1)は、シチジン類似体又は誘導体(例えばデシタビン又はアザシチジン)による治療に感受性を有する極めて多様な疾患の治療に用いられる。本発明の化合物(1)を用いて治療することができる好ましい適応症には、望ましくない又は無制御の細胞分裂を伴うものが含まれる。そのような適応症には、血液学的異常、良性腫瘍、種々のタイプの癌(例えば原発性腫瘍及び転移腫瘍)、再狭窄(例えば冠状動脈、頸動脈及び脳動脈病巣)、内皮細胞の異常な刺激(アテローム性硬化症)、外科手術による体組織の傷害、異常な創傷治癒、異常な血管形成、組織の線維症を生じる疾患、反復性運動異常、高度に血管が形成されていない組織の異常、及び器官移植に伴う増殖性応答が含まれる。
本発明の化合物を抗がん剤として用いる場合、その有効投与量は、がんの性質、がんの進行程度、治療方針、転移の程度、腫瘍の量、体重、年齢、性別及び患者の(遺伝的)人種的背景等に依存して適宜選択できるが、薬学的有効量は一般に、臨床上観察される症状、がんの進行度合い等の要因に基づいて決定される。一日あたりの投与量は、例えば、ヒトに投与する場合は、約0.01/kg 〜約10mg/kg(体重60kgの成人では、約0.5mg〜約500mg)、好ましくは約0.05/kg 〜約5mg/kg、より好ましくは約0.1/kg 〜約2mg/kg、である。投与は、1回で投与しても複数回に分けて投与してもよい。
5−アザシチジン類(I)(1mM)の無水N,N-ジメチルホルムアミド(3mL)懸濁液にイミダゾール(1.5mM)を加えた後、対応するシリルクロリド(1.2mM)を氷冷下に約10分間かけて滴下し、次いで、徐々に室温にもどしながら原料が消失するまで(約1〜17時間)撹拌した。其の反応液を酢酸エチル−飽和食塩水(2:1)混液50mLに注ぎ、酢酸エチルで抽出した。其の抽出液を飽和食塩水(10mL、二度)にて洗浄後、無水硫酸ナトリウムで乾燥し、不溶物を除いた抽出液を減圧乾固して得られた油状の残留物をシリカゲルパックカラム(Yamazen Smart Flash MS system装置)にて分離精製することにより、目的とする5−アザシチジン類の5’位シリルエーテル誘導体(式(1a)中、Rが水酸基又は水素原子であり、R1が三置換シリル基である化合物。)を白色粉末として単離することができた。なお、以後は、これを合成法Aと称する。
5−アザシチジン類(I)(1mM)の無水N,N-ジメチルホルムアミド(3mL)懸濁液にイミダゾール(2mM)を加えた後、対応するシリルクロリド(1.5mM)を氷冷下に約10分間かけて滴下し、次いで、徐々に室温にもどしながら原料が消失するまで(数時間)撹拌した。其の反応液を酢酸エチル−飽和食塩水(2:1)混液50mLに注ぎ、酢酸エチルで抽出した。其の抽出液を飽和食塩水(10mL)で二度洗浄後、無水硫酸ナトリウムで乾燥し、不溶物を除いた抽出液を減圧乾固して得られた油状の残留物をシリカゲルパックカラム(Yamazen Smart Flash MS system装置)にて分離精製することにより、目的とする5−アザシチジン類の3’,5’位ジシリルエーテル誘導体(式(1b)中、Rが水酸基又は水素原子であり、R1及びR2が三置換シリル基である化合物。)を白色粉末として単離することができた。なお、以後は、これを合成法Bと称する。
5−アザシチジン(1mM)の無水N,N-ジメチルホルムアミド(2mL)懸濁液にイミダゾール(4mM)を加えた後、対応するシリルクロリド(3.5mM)を氷冷下に約10分間かけて滴下し、次いで、徐々に室温にもどしながら原料が消失するまで(数時間)撹拌した。其の反応液を酢酸エチル−飽和食塩水(2:1)混液50mLに注ぎ、酢酸エチルで抽出した。其の抽出液を飽和食塩水(10mL、二度)で洗浄後、無水硫酸ナトリウムで乾燥し、不溶物を除いた抽出液を減圧乾固して得られた油状の残留物をシリカゲルパックカラム(Yamazen Smart Flash MS system装置)にて分離精製することにより、目的とする5−アザシチジン類の2’,3’,5’−トリシリルエーテル誘導体(式(1c)中、R1、R2及びR3が三置換シリル基である化合物。)は白色粉末として単離することができた。なお、以後は、これを合成法Cと称する。
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:14%)
1H-NMR (400MHz, CDCl3) δ: 8.53 (s, 1H), 6.20 (br, 1H), 5.81 (d, J= 3.2Hz, 1H), 5.69 (br, 1H), 5.30 (br, 1H), 4.38 (s, 1H), 4.25 (s, 2H), 3.87 (d, J= 10.8Hz, 1H), 3.72 (d, J= 10.8Hz, 1H), 3.45 (br, 1H), and 0.09 (s, 9H) ppm.
13C-NMR (CDCl3) δ: 166.7, 155.9, 155.5, 93.3, 87.8, 78.1, 72.6, 62.1, and -0.82 ppm.
Mass: 317.2 (M++1) (calcd. for C11H20N4O5Si, MW= 316.39).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系)
1H-NMR (400MHz, CD3OD) δ:8.66 (s, 1H), 6.13 (t, J= 6.0Hz, 1H), 4.35-4.42 (m, 1H), 3.67-4.02 (m, 9H), 2.34-2.50 (m, 1H), 2.20-2.32 (m, 1H), and 0.14 (s, 9H) ppm.
13C-NMR (CDCl3) δ: 166.3, 156.0, 154.1, 87.6, 86.8, 71.6, 62.3, 42.6, and 0.1 ppm.
Mass: 301.3 (M++1) (calculated for C11H20N4O4Si, MW= 300.13.)
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:12%)
1H-NMR (400MHz, CDCl3) δ: 8.56 (s, 1H), 6.61 (br, 1H), 5.94 (br, 1H), 5.83 (d, J= 4.0Hz, 1H), 4.31-4.34 (m, 1H), 4.23-4.28 (m, 2H), 3.91 (dd, J= 11.6 and 2.4Hz, 1H), 3.74 (dd, J= 11.6 and 2.4Hz, 1H), 0.92 (t, J= 8.0Hz, 3H), 0.56 (t, J= 8.0Hz, 2H), 0.09 (s, 3H), and 0.08 (s, 3H) ppm.
13C-NMR (CDCl3) δ: 166.5, 155.7, 155.6, 92.8, 87.3, 72.0, 62.0, 7.6, 6.6, and -3.03 ppm.
Mass: 331.2 (M++1) (calcd. for C12H22N4O5Si, MW= 330.41).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:13%)
1H-NMR (400MHz, CDCl3) δ: 8.56 (s, 1H), 6.81 (br, 1H), 6.08 (br, 1H), 5.85 (d, J= 3.6Hz, 1H), 5.62 (br, 1H), 4.31-4.33 (m, 1H), 4.24-4.28 (m, 2H), 3.92 (dd, J= 11.6 and 2.4Hz, 1H), 3.76 (dd, J= 11.6 and 2.4Hz, 1H), 3.72 (br, 1H), 0.93 (d, J= 6.8Hz, 6H), 0.79-0.88 (m, 1H), 0.07 (s, 3H), and 0.06 (s, 3H) ppm.
13C-NMR (CDCl3) δ: 166.4, 155.6, 155.4, 92.4, 87.0, 71.7, 62.2, 16.8, 16.7, 14.1, -4.7, and -4.8 ppm.
Mass: 345.2 (M++1) (calcd. for C13H24N4O5Si, MW= 344.44).
合成法: A法(反応時間:約3時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:12%)
1H-NMR (400MHz, CDCl3) δ: 8.50 (s, 1H), 6.32 (br, 1H), 5.81 (d, J= 3.6Hz, 1H), 5.76 (br, 1H), 5.45 (br, 1H), 4.35 (d, J= 2.0Hz, 1H), 4.24-4.29 (m, 2H), 3.93 (dd, J= 12.0 and 2.4Hz, 1H), 3.78 (dd, J= 12.0 and 2.0Hz, 1H), 3.54 (br, 1H), 0.86 (s, 9H), and 0.06 (s, 6H) ppm.
13C-NMR (CDCl3) δ: 167.2, 156.4, 156.0, 93.6, 88.2, 78.1, 72.8, 63.7, 26.5, 18.9, -5.0, and -5.1 ppm.
Mass: 359.2 (M++1) (calcd. for C14H26N4O5Si, MW= 358.47).
合成法: A法(反応時間:約17時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:23%)
1H-NMR (400MHz, CDCl3) δ: 8.45 (s, 1H), 7.19-7.25 (m, 2H). 7.06-7.10 (m, 1H). 6.98-7.00 (m, 2H). 6.18 (br, 1H), 5.77 (d, J= 4.0Hz, 1H), 5.67 (br, 1H), 5.27 (br, 1H), 4.31-4.32 (m, 1H), 4.10-4.16 (m, 2H), 3.84 (dd, J= 8.0 and 2.4Hz, 1H), 3.68 (dd, J= 11.6 and 1.6Hz, 1H), 3.38 (br, 1H), 2.16 (s, 2H), 0.12 (s, 3H), and 0.11 (s, 3H) ppm.
13C-NMR (CDCl3) δ: 166.6, 155.9, 155.4, 138.1, 128.5, 128.3, 124.7, 93.1, 87.5, 72.3, 62.5, 26.3, -2.53, and -2.58 ppm.
Mass: 393.2 (M++1) (calcd. for C17H24N4O5Si, MW= 392.48).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:18%)
1H-NMR (400MHz, CD3OD) δ: 8.78 (s, 1H), 5.79 (d, J= 1.6Hz, 1H), 4.13-4.19 (m, 2H), 4.07 (dt, J= 6.8 and 2.0Hz, 1H), 4.03 (dd, J= 12.0 and 2.4Hz, 1H), 3.82 (dd, J= 12.0 and 2.0Hz, 1H), 1.22-1.42 (m, 8H), 0.86-0.93 (m, 4H), 0.62-0.72 (m, 3H), 0.15 (s, 6H), and 0.14-0.18 (m, 2H) ppm.
13C-NMR (CD3OD) δ:156.6, 156.0, 155.2, 90.8, 84.1, 75.2, 68.5, 60.5, 33.2, 31.8, 29.1, 29.0, 22.9, 22.4, 15.5, 13.1, -3.6, and -3.7 ppm.
Mass: 415.4 (M++1) (calculated for C18H34N4O5Si, MW= 414.23).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:24%)
1H-NMR (400MHz, CD3OD) δ:8.65 (s, 1H), 6.12 (t, J= 5.6Hz, 1H), 4.34-4.37 (m, 1H), 4.00-4.02 (m, 1H), 3.91-3.95 (m, 1H), 3.76-3.79 (m, 1H), 2.45 (ddd, J= 13.6, 6.4, and 4.4Hz, 1H), 2.24 (m, 1H), 1.27-1.34 (m, 8H), 0.87-0.89 (m, 4H), 0.61-0.63 (m, 3H), and 0.12 (s, 6H).
13C -NMR (CD3OD) δ:156.2, 155.8, 155.1, 87.9, 86.7, 70.5, 61.8, 41.6, 33.2, 31.8, 29.1, 22.4, 15.6, 13.1, -1.38, -2.96, -3.73, and -3.83 ppm.
Mass: 399.3 (M++1) (calculated for C18H34N4O4Si, MW= 398.23).
合成法: A法(反応時間:約2時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:48%)
1H-NMR (400MHz, CD3OD) δ: 8.63 (s, 1H), 7.69-7.72 (m, 4H), 7.38-7.47 (m, 6H), 5.81 (d, J= 2.4Hz, 1H), 4.32 (dd, J= 7.2 and 5.2Hz, 1H), 4.23 (dd, J= 5.2 and 2.4Hz, 1H), 4.03-4.09 (m, 2H), 3.82 (dd, J= 11.6 and 2.8Hz, 1H), and 1.08 (s, 9H) ppm.
13C-NMR (CD3OD) δ: 166.4, 155.5, 155.0, 135.4, 135.2, 132.5, 132.3, 129.6, 127.5, 90.8, 83.9, 74.7, 68.7, 62.5, and 26.0 ppm.
Mass: 483.4 (M++1) (calcd. for C24H30N4O5Si, MW= 482.60).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:10%)
1H-NMR (400MHz, CD3OD) δ: 8.77 (s, 1H), 5.80 (d, J= 2.0Hz, 1H), 4.22 (dd, J= 6.8 and 4.8Hz, 1H), 4.15 (dd, J= 4.8 and 2.0Hz, 1H), 4.03-4.10 (m, 2H), 3.85 (dd, J= 11.6 and 2.0Hz, 1H), 1.00 (t, J= 8.4Hz, 9H), and 0.67-0.74 (m, 6H) ppm.
13C-NMR (CD3OD) δ: 163.0, 152.3, 151.5, 87.1, 80.4, 71.6, 64.7, 57.1, 2.07, and 0.00 ppm.
Mass: 359.2 (M++1) (calcd. for C14H26N4O5Si, MW= 358.47).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:81%)
1H-NMR (400MHz, CDCl3) δ: 8.62 (s, 1H), 6.26 (t, J= 6.0Hz, 1H), 6.25 (br, 1H), 5.58 (br, 1H), 4.47-4.51 (m, 1H), 4.09-4.11 (m, 1H), 3.93 (dd, J= 10.8 and 2.4Hz, 1H), 3.82 (dd, J= 11.6 and 2.0Hz, 1H), 2.64-2.70 (m, 1H), 2.66 (br, 1H), 2.23 (dt, J= 12.0 and 6.4Hz, 1H), 0.96 (t, J= 8.0Hz, 9H), and 0.63 (t, J= 8.0Hz, 6H) ppm.
13C-NMR (CDCl3) δ: 166.3, 156.0, 154.1, 87.6, 86.8, 71.6, 62.3, 42.6, 6.7, and 4.1 ppm.
Mass: 343.3 (M++1) (calcd. for C14H26N4O4Si, MW= 342.47).
合成法: A法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:21%)
1H-NMR (400MHz, CDCl3) δ: 8.56 (s, 1H), 7.04 (br, 1H), 6.21 (br, 1H), 5.85 (d, J= 2.8Hz, 1H), 5.70 (br, 1H), 4.28 (s, 3H), 3.98 (d, J= 11.2Hz, 1H), 3.81 (d, J= 11.2Hz, 1H), 3.79 (br, 1H), 0.93-0.99 (m, 13H), and 0.61-0.65 (m, 4H) ppm.
13C-NMR (CDCl3) δ: 166.4, 155.6, 155.5, 92.2, 87.0, 71.5, 62.5, 17.3, 17.2, 12.5, 7.0, 3.0, and 2.9 ppm.
Mass: 373.3 (M++1) (calcd. for C15H28N4O5Si, MW= 372.49).
合成法: B法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−メタノール系、単離収率:70%)。
1H-NMR (400MHz, CDCl3) δ: 8.69 (s, 1H), 6.17 (dd, J= 6.4 and 4.4Hz, 1H), 5.89 (br s, 1H), 5.44 (br s, 1H), 4.36 (q, J= 5.6Hz, 1H), 3.94-3.96 (m, 1H), 3.88 (dd, J= 11.6 and 2.8Hz, 1H), 3.71 (dd, J= 12.0 and 2.4Hz), 2.50 (q, J= 6.8Hz, 1H), 2.17-2.23 (m, 1H), 0.16 (s, 9H), and 0.12 (s, 9H) ppm.
13C-NMR (CDCl3) δ: 166.4, 156.2, 154.0, 87.6, 86.6, 69.7, 60.8, 42.2, 0.10, and -0.69ppm.
Mass: 373.3 (M++1) (calculated for C14H28N4O4Si2, MW= 372.16.)
合成法: B法(反応時間:約2時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:54%)
1H-NMR (400MHz, CD3OD) δ:8.61 (s, 1H), 6.10 (t, J= 5.2Hz, 1H), 4.46 (dd, J= 10.0 and 4.8Hz, 1H), 3.97 (dd, J= 6.4 and 2.8Hz, 1H), 3.88 (dd, J= 11.6 and 3.2Hz. 1H), 3.76 (dd, J= 11.2 and 2.4Hz, 1H), 2.41 (dt, J= 13.6 and 6.0Hz, 1H), 2.24 (dt, J= 13.6 and 5.6Hz, 1H), 1.29-1.34 (m, 24H), 0.87-0.91 (m, 6H), 0.61-0.68 (m, 4H), 0.14 (s, 6H), and 0.12 (s, 6H) ppm.
13C-NMRδ:166.7, 155.8, 155.0, 88.0, 86.5, 70.8, 61.2, 41.6, 33.3, 31.8, 29.16, 29.12, 29.11, 23.0, 22.9, 22.4, 16.0, 15.6, 13.2, -.2.78, -2.89, -3.57, and -3.75 ppm.
Mass: 569.5 (M++1) (calculated for C28H56N4O4Si2, MW= 568.38).
合成法: B法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:25%)
1H-NMR (400MHz, CDCl3) δ: 8.58 (s, 1H), 6.43 (br, 1H), 5.92 (d, J= 3.2Hz, 1H), 5.58 (br, 1H), 4.34 (t, J= 5.2Hz, 1H), 4.12 (br, 1H), 4.08 (dt, J= 6.0 and 2.0Hz, 1H), 3.98 (dd, J= 11.6 and 2.4Hz, 1H), 3.75 (dd, J= 11.2 and 2.4Hz, 1H), 3.09 (br, 1H), 0.97 (dt, J= 8.0 and 5.2Hz, 18H), and 0.61-0.70 (m, 12H) ppm.
13C-NMR (CDCl3) δ: 166.2, 156.1, 154.0, 90.3, 84.9, 76.0, 70.2, 61.1, 6.73, 6.64, 4.62, and 4.10 ppm.
Mass: 473.4 (M++1) (calcd. for C20H40N4O5Si2, MW= 472.73).
合成法: B法(反応時間:約2時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:54%)
1H-NMR (400MHz, CDCl3) δ: 8.67 (s, 1H), 6.19 (dd, J= 6.4 and 4.8Hz, 1H), 5.61 (br, 1H), 5.38 (br, 1H), 4.41 (q, J= 4.8Hz, 1H), 3.96-3.98 (m, 1H), 3.91 (dd, J= 11.6 and 2.8Hz, 1H), 3.76 (dd, J= 11.6 and 2.0Hz, 1H), 2.51 (dt, J= 13.2 and 6.0Hz, 1H), 2.15-2.21 (m, 1H), 0.92-0.99 (m, 18H), and 0.56-0.68 (m, 12H) ppm.
13C-NMR (CDCl3) δ: 166.4, 156.2, 154.0, 88.0, 86.6, 70.2, 61.5, 42.7, 6.8, 4.7, and 4.2 ppm.
Mass: 457.4 (M++1) (calcd. for C20H40N4O4Si2, MW= 456.73).
合成法: C法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:64%)
1H-NMR (400MHz, CDCl3) δ: 8.82 (s, 1H), 6.23 (br, 1H), 5.70 (s, 1H), 5.49 (br, 1H), 4.09-4.16 (m, 3H), 4.01 (dd, J= 12.0 and 1.2Hz, 1H), 3.70 (dd, J= 11.6 and 1.2Hz, 1H), 0.20 (s, 9H), 0.19 (s, 9H), and 0.13 (s, 9H) ppm.
13C-NMR (CDCl3) δ: 166.5, 156.4, 153.9, 91.2, 82.7, 76.4, 68.3, 59.3, 0.4, 0.2, and -0.7 ppm.
Mass: 461.3 (M++1) (calcd. for C17H36N4O5Si3, MW 460.75).
合成法: C法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:67%)
1H-NMR (400MHz, CDCl3) δ: 8.80 (s, 1H), 6.27 (br, 1H), 5.71 (d, J= 0.8Hz, 1H), 5.49 (br, 1H), 4.08-4.16 (m, 3H), 4.01 (dd, J= 12.0 and 0.8Hz, 1H), 3.72 (dd, J= 11.6 and 0.8Hz, 1H), 0.90-1.01 (m, 9H), 0.57-0.74 (m, 6H), 0.19 (s, 3H), 0.16 (s, 9H), 0.10 (s, 3H), and 0.09 (s, 3H) ppm.
13C-NMR (CDCl3) δ: 166.5, 156.3, 153.9, 91.1, 82.8, 68.4, 59.6, 8.6, 8.3, 7.7, 6.8, -1.8, -1.9, -2.1, -2.8, and -3.0 ppm.
Mass: 503.4 (M++1) (calcd. for C20H42N4O5Si3, MW= 502.83).
合成法: C法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:74%)
1H-NMR (400MHz, CDCl3) δ: 8.76 (s, 1H), 6.68 (br, 1H), 5.71 (d, J= 1.2Hz, 1H), 5.55 (br, 1H), 4.09-4.17 (m, 3H), 4.03 (d, J= 12.0Hz, 1H), 3,74 (d, J= 11.6Hz, 1H), 0.92-1.02 (m, 21H), 0.18 (s, 3H), 0.14 (s, 3H), 0.12 (s, 3H), 0.11 (s, 3H), and 0.07 (s, 6H) ppm.
13C-NMR (CDCl3) δ: 166.5, 156.2, 153.9, 90.9, 83.0, 76.4, 68.7, 59.9, 17.0, 16.9, 14.9, 14.6, 14.3, -3.4, -3.5, -3.9, -4.1, -4.5, and -4.8 ppm.
Mass: 545.4 (M++1) (calcd. for C23H48N4O5Si3, MW= 544.91).
合成法: C法(反応時間:約15時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:67%)
1H-NMR (400MHz, CDCl3) δ: 8.73 (s, 1H), 6.46 (br, 1H), 5.73 (d, J= 2Hz, 1H), 5.45 (br, 1H), 4.17 (dd, J= 3.6 and 1.6Hz, 1H), 4.06-4.13 (m, 3H), 3.80 (d, J= 1.2Hz, 0.5H), 3.77 (d, J= 1.6Hz, 0.5H), 0.96 (s, 9H), 0.91 (s, 9H), 0.89 (s, 9H), 0.21 (s, 3H), 0.15 (s, 3H), 0.13 (s, 3H), 0.11 (s, 3H), and 0.06 (s, 3H) ppm.
13C-NMR (CDCl3) δ: 171.9, 161.7, 159.4, 95.9, 88.7, 81.5, 74.6, 66.3, 31.7, 31.4, 24.2, 23.6, 23.5, 1.45, 1.31, 0.52, 0.44, and 0.22 ppm.
Mass: 587.5 (M++1) (calcd. for C26H54N4O5Si3 MW= 586.99).
合成法: C法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、収率:99%)
1H-NMR (400MHz, CDCl3) δ: 8.78 (s, 1H), 5.87 (br, 1H), 5.73 (d, J= 1.2Hz, 1H), 4.10-4,17 (m, 3H), 4.04 (dd, J= 11.6 and 1.6Hz, 1H), 3.77 (dd, J= 11.6 and 1.2Hz, 1H), 0.92-1.01 (m, 27H), and 0.57-0.78 (m, 18H) ppm.
13C-NMR (CDCl3) δ: 166.4, 156.3, 153.8, 90.6, 83.0, 76.4, 68.8, 60.2, 6.82, 6.80, 6.74, 4.80, 4.75, and 4.07 ppm.
Mass: 587.5 (M++1) (calcd. for C26H54N4O5Si3, MW= 586.99).
合成法: C法(反応時間:約1時間、カラム溶出溶媒:酢酸エチル−n-ヘキサン系、単離収率:74%)
1H-NMR (400MHz, CDCl3) δ: 8.76 (s, 1H), 6.38 (br, 1H), 5.75 (d, J= 2.0Hz, 1H), 5.47 (br, 1H), 4.07-4.22 (m, 4H), 3.81 (d, J= 10.4Hz, 1H), 0.94-1.05 (m, 36H), and 0.63-0.76 (m, 15H) ppm.
13C-NMR (CDCl3) δ: 166.4, 156.4, 153.9, 90.3, 83.2, 69.3, 60.6, 17.4, 17.3, 13.1, 13.0, 12.4, 7.2, 7.1, 7.0, 3.9, 3.8, 3.7, 3.0, and 2.8 ppm.
Mass: 629.5 (M++1) (calcd. for C29H60N4O5Si3, MW= 629.07).
化合物U 200mg (0.34mM)を無水テトラフラン溶液5mLに溶解し、氷冷下、テトラブチルアンモニウム・フルオリド(1モル濃度のテトラヒドロフラン溶液)0.34mL(0.34mM)を添加し、2.5時間撹拌した。反応液を酢酸エチル−飽和食塩水(2:1)30mLで希釈し、酢酸エチルで抽出した。この抽出液を飽和食塩水10mLで二回洗浄し、無水硫酸ナトリウムにて乾燥後、不溶物を濾去し、減圧濃縮して得られた残留物をシリカゲルカラムにかけて(クロロホルム:メタノール=10:1で溶出)分離精製したところ、目的とする化合物(X)が白色粉末として単離できた(単離収率:37%)。
1H-NMR (400MHz, CDCl3) δ: 8.22 (s, 1H), 5.45 (br, 1H), 5.30 (d, J= 5.6Hz, 1H), 4.82 (dd, J= 6.0 and 4.8Hz, 1H), 4.23 (dd, J= 4.4 and 3.2Hz, 1H), 4.11-4.13 (m, 1H), 3.92-3.95 (m, 1H), 3.78-3.80 (m, 1H), 3.66-3.71 (m, 1H), 0.91 (s, 9H), 0.87 (s, 9H), 0.09 (s, 3H), 0.08 (s, 3H), 0.07 (s, 3H), and 0.02 (s, 3H) ppm.
13C-NMR (CDCl3) δ: 170.9, 163.3, 158.6, 100.1, 92.1, 77.4, 76.8, 66.7, 30.7, 23.0, 22.8, 4.90, 0.43, 0.24, 0.10, and 0.00 ppm.
5−アザシチジン類の糖部シリルエーテル誘導体のシチジンデアミナーゼに対する安定性
5−アザシチジン類の糖部シリルエーテル誘導体(式(1a)を参照)約1mgをアセトニトリル1mLに溶解し、其の10μLをPBS1mLに添加し、得られた溶液にシチジンデアミナーゼのPBS溶液10μLを加えて、37℃にて約1時間撹拌した。其の反応液にアセトニトリル1mLを加えて遠心分離し、上澄液をHPLC分析した。例えば、5’-O-(t-Butyldimethylsilyl)-5-azacytidine(化合物E)、5’-O-(Triethylsilyl)-5-azacytidine(化合物J)及び5’-O-Triethylsilyl-2’-deoxy-5-azacytidine(化合物K)の場合の分析結果を表1に示す。
シチジンデアミナーゼ:CDA(1-146aa), Human, His-tagged, Recombinant cytidine deaminase (ATGen社)
HPLC測定条件:
カラム:CAPCELL PAK ADME
4.6mmx150mm、粒子サイズ:3μm
溶出: 溶出液A=10mM蟻酸アンモニウム含有精製水
溶出液B=アセトニトリル
A:B=99:1→5:95、30分間のグラジエントモード
流出速度:1.0mL/分 オーブン温度:40℃
検出器:UV240nm
5−アザシチジン類の糖部シリルエーテル誘導体の非酵素的加水分解
5−アザシチジン類の糖部シリルエーテル誘導体(式(1a)を参照)、例えば、5’-O-Triethylsilyl-5-azacytidine(化合物J)約1mgをアセトニトリル1mLに溶解し、其の5μLを10mM PBS溶液100μLに添加し、37℃にて撹拌した。其の反応物を経時的にHPLC分析した結果、5−アザシチジンの生成が確認でき、他の分解物の生成は認められなかった。また、5’-O-Triethylsilyl-2’-deoxy-5-azacytidine(化合物K)の場合も同様な結果が得られ、対応する脱シリル体(2’-Deoxy-5-azacytidine)の生成が確認できた。
なお、HPLC測定条件は、試験例1の場合と同じ分析条件である。
5−アザシチジン類の糖部シリルエーテル誘導体の抗骨髄腫瘍活性
骨髄腫細胞RPMI-8226(約4000個)含有溶液に、0.0033μM, 0.01μM, 0.033μM, 0.1μM, 0.33μM, 1μM, 3.3μM, 10μM, 33μM, 100μM 各濃度の5−アザシチジン類の糖部シリルエーテル誘導体含有溶液を添加し、RPMI-1640(10% FBS and 1% Penn-strep含有)培地中で72時間インキュベーションした後に、細胞数を計測し、細胞の増殖抑制効果をIC50値として算出する(Journal of Clinical Pathology, 2006, 59, 947-951. を参照)。
Claims (7)
- 式(1):
[式中、Rは、OR3基又は水素原子であり、
R1は、式(2):
(式中、R4、R5及びR6は、それぞれ置換基を有していてもよいアルキル基、置換基を有していてもよいアリール基又は置換基を有していてもよいアリールアルキル基である。)で表されるシリル基であり、R2及びR3は、それぞれ水素原子である。]で表される化合物又は其の塩。 - 前記R4、R5及びR6が、それぞれ置換基を有していてもよいC1〜C8アルキル、置換基を有していてもよいC6〜C10アリール基又は置換基を有していてもよいC7〜C14アリールアルキル基である、請求項1に記載の化合物又は其の塩。
- 前記R4、R5及びR6が、それぞれ置換基を有していてもよいC1〜C8アルキルである、請求項1に記載の化合物又は其の塩。
- 化合物が、5’−O−(ターシャリーブチルジメチルシリル)−5−アザシチジン、5’−O−トリエチルシリル−5−アザシチジンまたは5’−O−トリエチルシリル−2’−デオキシ−5−アザシチジンである、請求項1に記載の化合物又は其の塩。
- 5−アザシチジン又は2’−デオキシアザシチジンをシリルハライド化合物と反応させることを包含する、請求項1に記載の化合物又は其の塩の製造方法。
- 請求項1ないし4のいずれかの化合物又は其の塩を含有する医薬組成物。
- 請求項1ないし4のいずれかの化合物又は其の塩を用いる、急性類骨髄球性白血病、急性前骨髄球性白血病、急性リンパ芽球性白血病、慢性骨髄性白血病、骨髄形成不全症候群、鎌状赤血球貧血、良性腫瘍、種々のタイプの癌、再狭窄、内皮細胞の異常な刺激、外科手術による体組織の傷害、異常な創傷治癒、異常な血管形成、組織の線維症を生じる疾患、反復性運動異常、高度に血管が形成されていない組織の異常、及び器官移植に伴う増殖性応答の疾患を治療するための医薬品。
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WO2013036846A2 (en) * | 2011-09-09 | 2013-03-14 | Koronis Pharmaceuticals, Incorporated | N4 derivatives of deoxycytidine prodrugs |
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JPS5527077B1 (ja) * | 1970-03-14 | 1980-07-17 | ||
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WO2013036846A2 (en) * | 2011-09-09 | 2013-03-14 | Koronis Pharmaceuticals, Incorporated | N4 derivatives of deoxycytidine prodrugs |
WO2016057828A1 (en) * | 2014-10-08 | 2016-04-14 | Epigenetics Pharma Llc | Silylated pyrimidine prodrugs and methods of their use |
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