JP7159157B2 - 放射性フッ素標識化合物の製造方法および放射性医薬の製造方法 - Google Patents
放射性フッ素標識化合物の製造方法および放射性医薬の製造方法 Download PDFInfo
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- 125000000524 functional group Chemical group 0.000 description 1
- 229960005219 gentisic acid Drugs 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- HKVLOZLUWWLDFP-UHFFFAOYSA-M hydron;tetrabutylazanium;carbonate Chemical compound OC([O-])=O.CCCC[N+](CCCC)(CCCC)CCCC HKVLOZLUWWLDFP-UHFFFAOYSA-M 0.000 description 1
- HBRMHZKBZZGJFF-UHFFFAOYSA-M hydron;tetrapropylazanium;carbonate Chemical compound OC([O-])=O.CCC[N+](CCC)(CCC)CCC HBRMHZKBZZGJFF-UHFFFAOYSA-M 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000000644 isotonic solution Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 125000005948 methanesulfonyloxy group Chemical group 0.000 description 1
- 229940087646 methanolamine Drugs 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 238000010534 nucleophilic substitution reaction Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 238000003408 phase transfer catalysis Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001419 rubidium ion Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- QSUJAUYJBJRLKV-UHFFFAOYSA-M tetraethylazanium;fluoride Chemical compound [F-].CC[N+](CC)(CC)CC QSUJAUYJBJRLKV-UHFFFAOYSA-M 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000005951 trifluoromethanesulfonyloxy group Chemical group 0.000 description 1
Classifications
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- A61K51/00—Preparations containing radioactive substances for use in therapy or testing in vivo
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- A—HUMAN NECESSITIES
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- A61K51/04—Organic compounds
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- A61K51/044—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins
- A61K51/0453—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine, rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
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- 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
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- 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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- C07D233/91—Nitro radicals
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- C07D403/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
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Description
放射性ハロゲン化物イオンにより求核置換可能な脱離基を備えた放射性ハロゲン標識前駆体化合物に対し、放射性ハロゲン化反応を実行することにより、放射性ハロゲン標識前駆体化合物と放射性ハロゲン化反応の反応生成物とを含む第一の反応混合物を得る工程と、
前記第一の反応混合物と、多価酸またはその塩とを混合して、第二の反応混合物を得る工程と、
固相抽出法により、前記第二の反応混合物から前記反応生成物を精製する工程と、
を含む放射性ハロゲン標識化合物の製造方法
を提供するものである。
[工程1]放射性ハロゲン化物イオン(X-)により求核置換可能な脱離基(L)を備えた放射性ハロゲン標識前駆体化合物(S-L)に対し、放射性ハロゲン化反応を実行することにより、放射性ハロゲン標識前駆体化合物(S-L)と放射性ハロゲン化反応の反応生成物(S-X)とを含む反応混合物RM1(第一の反応混合物)を得る工程。
[工程2]反応混合物RM1と、多価酸(AH)またはその塩(A-B+)とを混合して、反応混合物RM2(第二の反応混合物)を得る工程。
[工程3]固相抽出法により、反応混合物RM2から反応生成物(S-X)を精製する工程。
放射性ハロゲン化工程では、放射性ハロゲン化物イオン(X-)により求核置換可能な脱離基(L)を備えた放射性ハロゲン標識前駆体化合物(S-L)に対し、放射性ハロゲン化反応を実行することにより、放射性ハロゲン標識前駆体化合物(S-L)と放射性ハロゲン化反応の反応生成物(S-X)とを含む反応混合物RM1を得る。
・式(1)で表わされる化合物:フルオロデオキシグルコース(18F)の標識前駆体化合物
・式(2)で表わされる化合物:fluciclovine(18F)の標識前駆体化合物
・式(3)で表わされる化合物:[18F]FLT(3’-[18F]fluoro-3’-deoxythymidine)の標識前駆体化合物
・式(4)で表わされる化合物:[18F]FET(O-(2-[18F]fluoroethyl)-L-tyrosine)の標識前駆体化合物
・式(5)で表わされる化合物:[18F]FES(6α-[18F]fluoro-17β-estradiol)の標識前駆体化合物
・式(6)で表わされる化合物:[18F]FMISO([18F]fluoromisonidazole)の標識前駆体化合物
・式(7)で表わされる化合物:[18F]FRP-170(1-(2-[18F]fluoro-1-(hydroxymethyl)ethoxy)methyl-2-nitroimidazole)の標識前駆体化合物
・式(8)で表わされる化合物:[18F]FAZA([18F]fluoroazomycin arabinoside)の標識前駆体化合物
・式(9)で表わされる化合物:1-(2,2-ジヒドロキシメチル-3-[18F]フルオロプロピル)-2-ニトロイミダゾール(WO2013/042668の化合物1)の標識前駆体化合物
・式(10)で表わされる化合物:フロルベタピル(18F)の標識前駆体化合物
・式(11)で表わされる化合物:florbetaben(18F)の標識前駆体化合物
・式(12)で表わされる化合物:[18F]FP-CITの標識前駆体化合物
・式(13)で表される化合物:[18F]FDDNP(2-(1-{6-[(2-[18F]fluoroethyl)(methyl)amino]-2-naphthyl}-ethylidene)malono nitrile)の標識前駆体化合物
・式(14)で表わされる化合物:WO2015/199205に記載されたCYP11B2選択的阻害能を有する化合物の標識前駆体化合物
(式(14)中、R1は、水素原子又はCO2Raを示し、R2は、水素原子、ハロゲン原子又はCO2Raを示し、R3は、水素原子又は炭素数1~10のヒドロキシアルキル基を示し、R4は、水素原子、ヒドロキシ基又は炭素数1~10のアルコキシ基を示し、nは、1~5の整数を示し、Aは、CH又は窒素原子を示し、X1、X3は、各々独立して、水素原子又はハロゲン原子を示し、X2は、水素原子、ハロゲン原子又はニトリル基を示すが、X1、X2、X3の少なくとも1つはハロゲン原子であり、Raは、各々独立して、炭素数1~10のアルキル基を示す。)
できる。また、P1、P2、P3は、Greene's Protective Groups in Organic Synthesis (John Wiley & Sons Inc社出版、5版、2014年10月27日発行)に記載されたものの中から、式(1)~(14)で示す化合物ごとに、個々に選択することができる。
放射性ハロゲン標識前駆体化合物(S-L)の分解工程では、反応混合物RM1と、多価酸(AH)またはその塩(A-B+)とを混合させることにより、放射性ハロゲン標識前駆体化合物(S-L)の脱離基(L)と多価酸イオン(A-)との置換反応を実行して、放射性ハロゲン標識前駆体化合物の分解物(S-A)を得る。これにより、放射性フッ素化反応の反応生成物(S-X)と放射性ハロゲン標識前駆体化合物の分解物(S-A)とを含む反応混合物RM2が得られる。
精製工程では、固相抽出法により、反応混合物RM2から放射性ハロゲン化反応の反応生成物(S-X)を精製する。
テトラエチルアンモニウム炭酸水素塩(15.6mmol、2.98g)をメタノール30mlに溶解し、クエン酸(5.2mmol、1.0g)を加えた。これを、室温で30分撹拌した後、溶媒を留去した。残留物をクロロホルム(20mL)で3回洗浄したのち、減圧下で乾燥することでクエン酸テトラエチルアンモニウム塩(5.0mmol、2.8g)を得た。
使用NMR装置:AVANCE-III(Bruker社製)
1H-NMR(溶媒:重ジメチルホルムアミド、共鳴周波数:500MHz):δ 3.23(q,J=7.2Hz,24H),2.23および2.17(qa-b,J=14.6Hz,4H),1.18(t,J=7.2Hz,36H)。
以下の工程1~3の手順に従い、アルドステロン合成酵素(CYP11B2)イメージング剤の6-クロロ-5-フルオロ-1-(2-[18F]フルオロエチル)-2-[5-(イミダゾール-1-イルメチル)ピリジン-3-イル]ベンゾイミダゾール([18F]CDP2230;WO2015/199205の化合物[18F]100)を製造した。
[TLC条件]
プレート:TLCガラスプレート シリカゲル60F254
展開溶媒:アセトニトリル/ジエチルアミン/水=10:1:1
[HPLC条件]
カラム:XBridge Phenyl(商品名、日本ウォーターズ社製、粒子径:3.5μm、サイズ:4.6mmφ×100mm)
カラム温度:40℃付近の一定温度
移動相:10mM炭酸水素アンモニウム溶液/メタノール=50/50→35/65(0→10分),35/65→0/100(10→25分)
流速:1.0mL/分
検出器:紫外可視吸光光度計(検出波:300nm)
実施例2の工程2を省略した以外は、実施例2とほぼ同様にして、以下のとおり、[18F]CDP2230を製造した。
以下の工程1~4の手順に従い、低酸素イメージング剤の1-(2,2-ジヒドロキシメチルー3-[18F]フルオロプロピル)-2-ニトロイミダゾール(WO2013/042668の化合物1の18F標識体)を製造した。
これをアルゴンガスの通気下110℃に加熱して水を蒸発させた後、アセトニトリル(0.3mL×2)を加えて共沸させ乾固させた。ここに2,2-ジメチル-5-[(2-ニトロ-1H-イミダゾール-1-イル)メチル]-5-(p-トルエンスルホニルオキシメチル)-1,3-ジオキサン(WO2013/042668の図1 step5の生成物、前駆体化合物2)5mg(11.7μmol相当)を溶解したジメチルスルホキシド溶液1.0mLを加え、100℃で10分加熱することにより、放射性フッ素化反応を実行した。
[TLC条件]
プレート:TLCガラスプレート シリカゲル60F254
展開溶媒:酢酸エチル/メタノール/トリエチルアミン=5:1:0.5
[HPLC条件]
カラム:YMC-TriartC18(商品名、YMC社製、粒子径:5μm、サイズ:4.6mmφ×150mm)
カラム温度:25℃付近の一定温度
移動相:50mM炭酸アンモニウム水溶液/アセトニトリル=100/0→30/70(0→40分)
流速:1.0mL/分
検出器:紫外可視吸光光度計(検出波:254nm)
実施例3の工程2を省略した以外は、実施例3とほぼ同様にして、以下のとおり、1-(2,2-ジヒドロキシメチル-3-[18F]フルオロプロピル)-2-ニトロイミダゾールを製造した。
Claims (5)
- 放射性フッ化物イオンにより求核置換可能な脱離基を備えた放射性フッ素標識前駆体化合物に対し、放射性フッ素化反応を実行することにより、放射性フッ素標識前駆体化合物と放射性フッ素化反応の反応生成物とを含む第一の反応混合物を得る工程と、
前記第一の反応混合物と、多価酸と相関移動触媒とが塩形成したものとを混合させることにより、前記脱離基と前記多価酸との置換反応を実行して、第二の反応混合物を得る工程と、
逆相分配能と陰イオン交換基とを有する固相カートリッジを用いた固相抽出法により、前記第二の反応混合物から前記反応生成物を精製する工程と、
を含み、
前記多価酸が、カルボキシル基、スルホン酸基およびフェノール基から選択される一の酸性基を複数備えるもの、または、これらの酸性基を組み合わせて備えるものからなる多価有機酸であり、
前記脱離基が、スルホニルオキシ基である、放射性フッ素標識化合物の製造方法。 - 前記第二の反応混合物を得る前記工程は、前記第一の反応混合物と、前記多価酸と相関移動触媒とが塩形成したものとを混合させた後、加熱することにより、前記第二の反応混合物を得ることを含む、請求項1に記載の放射性フッ素標識化合物の製造方法。
- 前記脱離基が、芳香族スルホニルオキシ基またはアルキルスルホニルオキシ基から選択される、請求項1または2に記載の放射性フッ素標識化合物の製造方法。
- 前記相関移動触媒が、テトラアルキルアンモニウム塩である、請求項1乃至3のいずれか一項に記載の放射性フッ素標識化合物の製造方法。
- 請求項1乃至4のいずれか一項に記載の放射性フッ素標識化合物の製造方法を実行することを含む、放射性フッ素標識化合物を有効成分とする放射性医薬の製造方法。
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EP3643710A1 (en) | 2020-04-29 |
TW201904919A (zh) | 2019-02-01 |
JPWO2018235535A1 (ja) | 2020-04-23 |
CN110809575A (zh) | 2020-02-18 |
US20200121811A1 (en) | 2020-04-23 |
EP3643710A4 (en) | 2020-04-29 |
WO2018235535A1 (ja) | 2018-12-27 |
KR20200016863A (ko) | 2020-02-17 |
US11318216B2 (en) | 2022-05-03 |
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