JP7466664B2 - ピラジン化合物およびその調製方法と使用 - Google Patents
ピラジン化合物およびその調製方法と使用 Download PDFInfo
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Classifications
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- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/02—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings
- C07D241/10—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D241/12—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/4965—Non-condensed pyrazines
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
Landscapes
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- Chemical & Material Sciences (AREA)
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Description
I
式中、XおよびYは、それぞれ独立して、O、S、SeまたはNR6から選択され、R1、R2、R3、R4、R5、R6はそれぞれ独立して、H、重水素、ハロゲン、ヒドロキシル基、アミノ基、カルボキシル基、アミド基、エステル基、置換または無置換のアルキル基、重水素化アルキル基、置換または無置換のアルケニル基、置換または無置換のアルキニル基、置換または無置換のシクロアルキル基、置換または無置換の複素環基、置換または無置換のアルコキシ基、置換または無置換のアルキルカルボキシル基、置換または無置換のアルキルエステル基、-置換または無置換のアルキル基-OH、置換または無置換のアルコキシ基、アルキルアミノ基、-置換または無置換のアルキル基-NH2、置換または無置換のアリール基、置換または無置換のヘテロアリール基、置換または無置換のカーボネート基、カルバメート、-置換または無置換のアルキル-アシルアミノ基、-置換または無置換のアミノアルキルカルボキシレート、または上記の基の重水素化誘導体であり、n=0~6、m=0~5である。
II
式中、XおよびYは、O、S、SeまたはNR6から選択される。
または
または
または
ステップ(2):化合物イミダゾール(6.2g,90.5mmol)およびtert-ブチルジメチルシリルクロリド(13.6g,90.5mmol)をN,N-ジメチルホルムアミド(200ml)に溶解し、化合物2-0(5.0g,36.2mmol)を数回に分けて加え、室温で一晩撹拌した。反応が終了した後、水で希釈し、n-ヘキサンで抽出し、無水硫酸ナトリウムで乾燥させ、濾過し、濃縮し、得られた粗生成物の一部(3.7g)をメタノール(40ml)に溶解し、ヨウ素単体(0.4g)を加えて2時間撹拌し、反応が終了した後にチオ硫酸ナトリウムを加えてクエンチし、濃縮し、エーテルで希釈し、水で洗浄し、飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥させ、濾過し、濃縮し、シリカゲルカラムクロマトグラフィーによって生成物2-1(2.0g,83%)を得た。1H NMR(400MHz,DMSO-d6)δ6.92(d,J=8.5Hz,2H),6.69-6.49(m,2H),4.41(t,J=5.2Hz,0H),3.40(td,J=7.1,5.3Hz,2H),2.49(t,J=7.1Hz,2H),0.78(s,9H),0.07(s,6H)。MS(ESI)m/z:253.2[M+H]+。
ステップ(3):窒素ガスの保護下で、化合物2-1(252mg,1mmol)およびトリホスゲン(112mg,0.34mmol)を無水ジクロロメタン(15ml)に溶解し、N,N-ジイソプロピルエチルアミン(0.1ml)を加え、室温で0.5時間撹拌した後、化合物1-1(304mg,2mmol)および4-ジメチルアミノピリジン(366mg,3mmol)を順次加え、室温で反応を一晩続けた。反応が終了した後、濃縮し、シリカゲルカラムクロマトグラフィーによって生成物2-2(241mg,56%)を得た。1H NMR(400MHz,CDCl3)δ6.88(d,J=8.4Hz,2H),6.58(d,J=8.4Hz,2H),5.05(s,2H),4.14(t,J=7.2Hz,2H),2.73(t,J=7.2Hz,2H),2.35(s,1H),2.31(s,1H),2.31(s,1H),0.79(s,9H),0.00(s,6H)。MS(ESI)m/z:431.2[M+H]+。
ステップ(4):化合物2-2(86mg,0.2mmol)をテトラヒドロフラン(10ml)に溶解し、フッ化水素酸溶液(1.0ml,2.0mmol)を加え、1時間還流反応させた。反応が終了した後、順に飽和炭酸水素ナトリウム溶液、水、飽和食塩水で洗浄し、有機相を無水硫酸ナトリウムで乾燥させ、濾過し、濃縮し、シリカゲルカラムクロマトグラフィーによって生成物OLB-1(54mg,86%)を得た。1H NMR(400MHz,CDCl3)δ7.02(d,J=8.5Hz,2H),6.74(d,J=8.5Hz,2H),5.24(s,2H),4.30(t,J=7.2Hz,2H),2.88(t,J=7.2Hz,2H),2.53(s,1H),2.51(s,1H),2.50(s,1H)。MS(ESI)m/z:317.2[M+H]+。
ステップ(2):化合物1-2(17.5g,82mmol)、フタルイミドカリウム(21.0g,110mmol)およびヨウ化ナトリウム(0.5g,3.3mmol)をN,N-ジメチルホルミアミド(100ml)に溶解し、95℃で2時間撹拌した。反応が終了した後、濾過し、濾液を氷水に注ぎ、白色沈殿物を得、吸引濾過し、濾過ケーキをエタノールで再結晶させて生成物1-3(18.7g,81%)を得た。1H NMR(400MHz,DMSO-d6)δ8.01-7.79(m,4H),4.90(s,2H),2.53(s,3H),2.38(s,3H),2.21(s,3H)。MS(ESI)m/z:282.1[M+H]+。
ステップ(3):化合物1-3(2.8g,10mmol)をエタノール(30ml)に溶解し、ヒドラジン水和物(50%,1.0ml)を加え、2時間還流させた。反応が終了した後、濾過し、塩酸でpHを1~2に調整し、濾過し、濃縮し、水酸化ナトリウム溶液(20%)を加えて撹拌し、ジクロロメタンで抽出し、濃縮して生成物1-4(0.83g,55%)を得た。1H NMR(400MHz,DMSO-d6)δ8.07(dd,J=5.9,3.3Hz,1H),7.84(dd,J=5.9,3.3Hz,1H),3.81(s,2H),2.42(s,3H),2.42(s,3H),2.41(s,3H)。MS(ESI)m/z:152.1[M+H]+。
ステップ(4):窒素ガスの保護下で、化合物2-1(252mg,1mmol)およびトリホスゲン(112mg,0.34mmol)を無水ジクロロメタン(15ml)に溶解し、N,N-ジイソプロピルエチルアミン(0.1ml)を加え、室温で0.5時間撹拌した後、化合物1-4(302mg,2mmol)および4-ジメチルアミノピリジン(366mg,3mmol)を順次加え、室温で反応を一晩続けた。反応が終了した後、濃縮し、シリカゲルカラムクロマトグラフィーによって生成物2-3(265mg,62%)を得た。1H NMR(400MHz,CDCl3)δ6.90(d,J=8.4Hz,2H),6.58(d,J=8.4Hz,2H),4.24(d,J=3.5Hz,2H),4.11(t,J=7.1Hz,2H),2.71(t,J=7.1Hz,2H),2.30(s,9H),0.79(s,9H),0.00(s,6H)。MS(ESI)m/z:430.2[M+H]+。
ステップ(5):化合物2-3(85mg,0.2mmol)をテトラヒドロフラン(10ml)に溶解し、フッ化水素酸溶液(1.0ml,2.0mmol)を加え、1時間還流反応させた。反応が終了した後、順に飽和炭酸水素ナトリウム溶液、水、飽和食塩水で洗浄し、有機相を無水硫酸ナトリウムで乾燥させ、濾過し、濃縮し、シリカゲルカラムクロマトグラフィーによって生成物OLB-2(51mg,81%)を得た。1H NMR(400MHz,CDCl3)δ7.06(d,J=8.3Hz,2H),6.76(d,J=8.3Hz,2H),4.42(d,J=3.8Hz,2H),4.28(t,J=7.0Hz,2H),2.88(t,J=7.1Hz,2H),2.42(s,3H),2.42(s,3H),2.41(s,3H)。MS(ESI)m/z:316.2[M+H]+。
Claims (3)
- ピラジン化合物、立体異性体、互変異性体、およびその薬学的に許容される塩であって、以下の構造を有する、ことを特徴とするピラジン化合物、立体異性体、互変異性体、およびその薬学的に許容される塩。
- 化合物の調製方法であって、その調製過程は、以下である、ことを特徴とする化合物の調製方法。
- 調製過程は、以下である、ことを特徴とする請求項2に記載の調製方法。
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