JP2016531851A - タウ画像化剤の調製のための新規化合物および使用、ならびにタウ画像化製剤 - Google Patents
タウ画像化剤の調製のための新規化合物および使用、ならびにタウ画像化製剤 Download PDFInfo
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- JP2016531851A JP2016531851A JP2016516543A JP2016516543A JP2016531851A JP 2016531851 A JP2016531851 A JP 2016531851A JP 2016516543 A JP2016516543 A JP 2016516543A JP 2016516543 A JP2016516543 A JP 2016516543A JP 2016531851 A JP2016531851 A JP 2016531851A
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- 239000006227 byproduct Substances 0.000 description 1
- 238000001460 carbon-13 nuclear magnetic resonance spectrum Methods 0.000 description 1
- 210000003710 cerebral cortex Anatomy 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000011097 chromatography purification Methods 0.000 description 1
- 230000003930 cognitive ability Effects 0.000 description 1
- 229940125890 compound Ia Drugs 0.000 description 1
- 239000012050 conventional carrier Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 239000013058 crude material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- AFZSMODLJJCVPP-UHFFFAOYSA-N dibenzothiazol-2-yl disulfide Chemical compound C1=CC=C2SC(SSC=3SC4=CC=CC=C4N=3)=NC2=C1 AFZSMODLJJCVPP-UHFFFAOYSA-N 0.000 description 1
- LOKCTEFSRHRXRJ-UHFFFAOYSA-I dipotassium trisodium dihydrogen phosphate hydrogen phosphate dichloride Chemical compound P(=O)(O)(O)[O-].[K+].P(=O)(O)([O-])[O-].[Na+].[Na+].[Cl-].[K+].[Cl-].[Na+] LOKCTEFSRHRXRJ-UHFFFAOYSA-I 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- ODCCJTMPMUFERV-UHFFFAOYSA-N ditert-butyl carbonate Chemical compound CC(C)(C)OC(=O)OC(C)(C)C ODCCJTMPMUFERV-UHFFFAOYSA-N 0.000 description 1
- 229940126534 drug product Drugs 0.000 description 1
- 229940088679 drug related substance Drugs 0.000 description 1
- 238000002651 drug therapy Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000132 electrospray ionisation Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- CCIVGXIOQKPBKL-UHFFFAOYSA-M ethanesulfonate Chemical compound CCS([O-])(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-M 0.000 description 1
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000003818 flash chromatography Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 125000005241 heteroarylamino group Chemical group 0.000 description 1
- 238000004896 high resolution mass spectrometry Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- GXHMMDRXHUIUMN-UHFFFAOYSA-N methanesulfonic acid Chemical compound CS(O)(=O)=O.CS(O)(=O)=O GXHMMDRXHUIUMN-UHFFFAOYSA-N 0.000 description 1
- AFVFQIVMOAPDHO-UHFFFAOYSA-N methanesulfonic acid Substances CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- CZXGXYBOQYQXQD-UHFFFAOYSA-N methyl benzenesulfonate Chemical compound COS(=O)(=O)C1=CC=CC=C1 CZXGXYBOQYQXQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PSHKMPUSSFXUIA-UHFFFAOYSA-N n,n-dimethylpyridin-2-amine Chemical compound CN(C)C1=CC=CC=N1 PSHKMPUSSFXUIA-UHFFFAOYSA-N 0.000 description 1
- LLYKPZOWCPVRPD-UHFFFAOYSA-N n,n-dimethylpyridin-2-amine;n,n-dimethylpyridin-4-amine Chemical compound CN(C)C1=CC=NC=C1.CN(C)C1=CC=CC=N1 LLYKPZOWCPVRPD-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 150000004028 organic sulfates Chemical class 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000012636 positron electron tomography Methods 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 239000002287 radioligand Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000012087 reference standard solution Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 150000003892 tartrate salts Chemical class 0.000 description 1
- 125000005931 tert-butyloxycarbonyl group Chemical group [H]C([H])([H])C(OC(*)=O)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- WHRNULOCNSKMGB-UHFFFAOYSA-N tetrahydrofuran thf Chemical compound C1CCOC1.C1CCOC1 WHRNULOCNSKMGB-UHFFFAOYSA-N 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- 125000005208 trialkylammonium group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- 238000001195 ultra high performance liquid chromatography Methods 0.000 description 1
- 238000004704 ultra performance liquid chromatography Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
- A61K51/02—Preparations containing radioactive substances for use in therapy or testing in vivo characterised by the carrier, i.e. characterised by the agent or material covalently linked or complexing the radioactive nucleus
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- A61K51/041—Heterocyclic compounds
- A61K51/044—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins
- A61K51/0455—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
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- C07C309/02—Sulfonic acids having sulfo groups bound to acyclic carbon atoms
- C07C309/03—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
- C07C309/04—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing only one sulfo group
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- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/29—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton of non-condensed six-membered aromatic rings
- C07C309/30—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton of non-condensed six-membered aromatic rings of six-membered aromatic rings substituted by alkyl groups
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- C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
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Abstract
Description
[18F]T807は患者におけるタウ沈着物の検出および/または定量に有用である(非特許文献2)。
この前駆体のt−boc型(すなわちtertブチル7−(6−ニトロピリジン−3−イル)−5H−ピリド[4,3−b]インドール−5−カルボキシレート)を、以下に示す。
Xia et al.は、前駆体化合物が、以下に示される7−(6−ニトロピリジン−3−イル)−5H−ピリド[4,3−b]インドールである方法を列挙する。
Xia et al.は別個のバイアル中での鉄粉末/ギ酸を用いて、残存する前駆体上のニトロ基をそれぞれの2−アミノ−ピリジン誘導体へ還元し、それによりHPLCによる分離を促進する第2のステップを使用する、7−(6−ニトロピリジン−3−イル)−5H−ピリド[4,3−b]インドールの18Fによる放射性同位元素標識を列挙する(非特許文献1、http://dx.doi.org/10.1016/j.jalz.2012.11.008でオンラインで入手可能)。
(式中、[陰イオン]−は適切な陰イオン性対イオンである)の化合物を提供する。適切な陰イオン性対イオンには非求核性陰イオン(有機スルホン酸塩または酒石酸塩等)が含まれる。有機硫酸塩は好ましくはアルキルスルホン酸塩またはアリールスルホン酸塩である。
式I、IaおよびIbの化合物は、例えば式IIの化合物の合成に有用である。
式IIの化合物は[18F]T807とも称される。
の化合物を作製するプロセスであって、
式
によって表わされる、5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルベンゼンスルホン酸塩を、[18F]フッ化物の供給源と反応させることを含む、プロセスを提供する。
式IIの化合物は式Iの化合物から調製することができる。より具体的には、スキーム1中で示されるように、最初に式Iaの化合物を、塩基(炭酸カリウム等)の存在下において、[18F]フッ化物の適切な供給源(クリプタンド2.2.2−K2CO3[18F]フッ化物等)と反応させる。反応は、溶媒(DMSO、アセトニトリルおよびその混合物等)中で好都合に実行される。もたらされたN−保護[18F]中間体を、溶媒(DMSOおよび水等)中の適切な酸(塩酸水溶液等)と反応させて、式IIの化合物を提供する。
スキームI
すべての反応は、特に断りのない限り窒素雰囲気下で実行される。自動化Teledyne Isco(登録商標)フラッシュクロマトグラフィーシステムを使用して、産物を精製する。試薬、溶媒および供給は化学分野の当業者に公知である。
BocまたはBOC tert−ブチルカルボニル
(Boc)2O ジ−tert−ブチルカルボナート
bs 幅広一重線
d 二重線
DAD ダイオードアレイ検出器
dd 二重線の二重線
DMAP ジメチルアミノピリジン
DMSO−d6 ヘキサジュウテロジメチルスルホキシド
HPLC 高速液体クロマトグラフィー
HRMS 高分解能質量分析
LCMS 液体クロマトグラフィー質量分析
NMR 核磁気共鳴
ppm 百万分の一
QTof 四重極飛行時間
s 一重線
t 三重線
THF テトラヒドロフラン
UPLC 超高速液体クロマトグラフィー
GE General Electric
Ki 阻害定数
PET 陽電子放射断層撮影法
T1/2 半減期
%ID/g 1グラムの組織あたり注射された用量のパーセント
USP 米国薬局方
v/v 体積対体積の比
WFI 注射用水。
tert−ブチル7−ブロモ−5H−ピリド[4,3−b]インドール−5−カルボキシレート(IV)の合成
3−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)ピリジン1−オキシド(III)の合成
5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルベンゼンスルホン酸塩(Ia)の合成
5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルベンゼンスルホン酸塩の複数のバッチを合わせ(11.25g)、塩化メチレン(500mL)中で溶解する。濁った橙色混合物をNa2SO4の上で乾燥し、Celite(登録商標)を介して濾過する。濾過ケーキを塩化メチレン(100mL)により洗浄する。もたらされた橙色溶液を、迅速に撹拌したジエチルエーテル(2L)へ1滴ずつ添加する。沈殿させた固体を濾過によって単離し、ジエチルエーテル(1L)により洗浄する。高真空下で乾燥した後に、表題化合物をベージュ色固体(10.75g、96%の回収)として得た。1H NMR(400MHz,CDCl3):δ9.31(dd,J<0.5Hz(2),1H),8.77(dd,J=2.4,0.6Hz,1H),8.67(dd,J=5.9,<0.5Hz,1H),8.63(dd,J=1.6,0.5Hz,1H),8.51(dd,J=8.7,0.6Hz,1H),8.16(dd,J=8.1,0.5Hz,1H),8.13(dd,J=8.7,2.4Hz,1H),8.11(dd,J=5.9,<0.5Hz,1H),7.80(para d,J=8.1Hz,2H),7.58(dd,J=8.1,1.6Hz,1H),7.13(para d,J=8.1,2H),3.94(s,9H),2.28(s,3H),1.78(s,9H).13C NMR(100.6MHz,CDCl3):δ156.0,150.2,147.6,146.6,144.0,143.9,142.8,139.6,139.3(2),139.2,135.2,128.7,126.0,124.3,123.1,121.3,120.9,116.0,115.3,111.1,85.7,55.4,28.3,21.2.HRMS:C24H27N4O2(親イオン、M+H)+についての計算値は403.2134、測定値は403.2129、誤差=−1.2ppm。元素分析(GLI Procedure ME−12):計算値はC 64.79 H 5.96 N 9.75、測定値はC 63.88/63.44 H 6.05/5.90 N 9.34/9.24。Pd分析(GLI Procedure ME−70):4.6ppm(Galbraith Inc.、2323 Sycamore Drive、Knoxville、TN 37921)。
7−(6−[18F]フルオロ−3−ピリジル)−5H−ピリド[4,3−b]インドール、[18F]T807の放射合成
AD脳組織切片のフィルムオートラジオグラフィー
AD脳組織切片のフィルムオートラジオグラフィーを以前に出版された方法と一致した様式で遂行する(Zhang,W.,et al.F−18 stilbenes as PET imaging agents for detecting beta−amyloid plaques in the brain.Journal of Medicinal Chemistry,48:5980−5988,2005、Zhang,W.,et al.F−18 stilbenes as PET imaging agents for amyloid plaque imaging.Nucl Med Biol.2007 34(1):89−97を参照)。死後にADと診断されたヒト脳切片(前頭葉、10μm)を、0.5mlの[18F]T807(2.5:2.5:95=DMSO:エタノール:1×リン酸緩衝生理食塩水(PBS)中で、1スライドあたり約20μCiの[18F]T807)によりカバーし、室温で60分間インキュベーションする。次いで、2分間の1×PBS、2分間の30%エタノール/1×PBS、2分間の70%エタノール/1×PBS、および2分間の1×PBSの連続した洗浄サイクルを用いて、任意の未結合トレーサーを除去する。換気フード下で乾燥した後に、切片をFujiFilm放射性センサーカセットに置き、一晩露光する。オートラジオグラフィーシグナルを放射性センサーシート中に記録し、FujiFilm Bio−Imaging System FLA−7000による読み取り/可視化を行う。タウのオートラジオグラフィーによる可視化は死後のAD脳組織の灰白質中で観察される。ADを呈する患者からのタウ陽性ヒト脳組織の死後の前頭葉切片(10μm)におけるタウの[18F]T807標識(およそ1スライドあたり20μCiの[18F]T807)を図示する図2を参照されたい。[18F]T807の強いオートラジオグラフィーシグナルは灰白質(GM)領域で観察され、これらの領域中のタウの存在はタウ免疫染色によって確認される。非特異的またはバックグラウンドの[18F]T807シグナルは白質領域(WM)で示され、低い。オートラジオグラフィーシグナルの特異性は、生来のタウ凝集への結合に関して、1μMの非放射性T807のブロッキング効果によって示される。
Claims (14)
- 式
(式中、[陰イオン]−は適切な陰イオン性対イオンである)
の化合物。 - 式
(式中、[陰イオン]−はアルキルスルホン酸塩またはアリールスルホン酸塩である)
の請求項1に記載の化合物。 - 式
によって表わされる、5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルベンゼンスルホン酸塩である、請求項2に記載の化合物。 - 式
によって表わされる、5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルスルホン酸塩である、請求項2に記載の化合物。 - 式
の化合物を作製するプロセスであって、
式
(式中、[陰イオン]−は適切な陰イオン性対イオンである)の化合物を、[18F]フッ化物と反応させることを含む、プロセス。 - 式
の化合物を作製するプロセスであって、
式
によって表わされる、5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルベンゼンスルホン酸塩を、[18F]フッ化物と反応させることを含む、プロセス。 - 式
の化合物を作製するプロセスであって、
式
によって表わされる、5−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)−N,N,N−トリメチルピリジン−2−アミニウム4−メチルスルホン酸塩を、[18F]フッ化物と反応させることを含む、プロセス。 - 請求項5、6、または7のいずれか一項に記載のプロセスによって作製された
および薬学的に許容される担体または希釈剤を含む、診断用組成物。 - 請求項5、6、または7のいずれか一項に記載のプロセスによって作製された
および10%(v/v)エタノール、90%(w/v)(0.9%塩化ナトリウム水溶液)を含む、診断用組成物。 - 請求項5、6、または7のいずれか一項に記載のプロセスによって作製された
および10%(v/v)エタノール/90%(21mMリン酸ナトリウム)を含む、診断用組成物。 - 請求項5、6、または7のいずれか一項に記載のプロセスによって作製された
ならびに9%(v/v)エタノール、1%(w/v)コリフォー(Kolliphor) HS 15および90%(v/v)(0.9%塩化ナトリウム水溶液)を含む、診断用組成物。 - a.検出可能な量の、請求項5、6、または7のいずれか一項に記載のプロセスによって作製された化合物
を哺乳動物へ導入する工程と;
b.前記化合物がタウと会合するようになるのに十分な時間、放置する工程と;
c.前記化合物を検出する工程と
を含む、タウを画像化する方法。 - d.請求項8、9、10または11のいずれか一項に記載の検出可能な量の診断用組成物を哺乳動物へ導入する工程と;
e.前記診断用組成物がタウと会合するようになるのに十分な時間、放置する工程と;
f.前記診断用組成物を検出する工程と
を含む、タウを画像化する方法。 - 中間体が、式
によって表わされる、3−(5−(tert−ブトキシカルボニル)−5H−ピリド[4,3−b]インドール−7−イル)ピリジン1−オキシドである、請求項1に記載の化合物を調製するための中間体。
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TWI653052B (zh) | 2017-11-17 | 2019-03-11 | 國立臺灣大學 | [<sup></sup>F]T807衍生物的製備及用途 |
KR102215255B1 (ko) | 2019-06-12 | 2021-02-15 | 한국과학기술연구원 | 타우 응집체에 선택적으로 결합하는 형광 탐침자로서 유효한 신규 화합물 및 이의 제조 방법 |
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