JP5860808B2 - 放射性ヨウ素化方法 - Google Patents
放射性ヨウ素化方法 Download PDFInfo
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- JP5860808B2 JP5860808B2 JP2012525175A JP2012525175A JP5860808B2 JP 5860808 B2 JP5860808 B2 JP 5860808B2 JP 2012525175 A JP2012525175 A JP 2012525175A JP 2012525175 A JP2012525175 A JP 2012525175A JP 5860808 B2 JP5860808 B2 JP 5860808B2
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- 239000000546 pharmaceutical excipient Substances 0.000 description 1
- UYWQUFXKFGHYNT-UHFFFAOYSA-N phenylmethyl ester of formic acid Natural products O=COCC1=CC=CC=C1 UYWQUFXKFGHYNT-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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- 229920005862 polyol Polymers 0.000 description 1
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- 239000000843 powder Substances 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- PPASLZSBLFJQEF-RKJRWTFHSA-M sodium ascorbate Substances [Na+].OC[C@@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RKJRWTFHSA-M 0.000 description 1
- 235000010378 sodium ascorbate Nutrition 0.000 description 1
- 229960005055 sodium ascorbate Drugs 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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- 230000003381 solubilizing effect Effects 0.000 description 1
- 229960000553 somatostatin Drugs 0.000 description 1
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- 230000001954 sterilising effect Effects 0.000 description 1
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- 239000003270 steroid hormone Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000005846 sugar alcohols Chemical class 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000003556 thioamides Chemical class 0.000 description 1
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- 108010052768 tyrosyl-isoleucyl-glycyl-seryl-arginine Proteins 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/04—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles
- C07D249/06—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles with aryl radicals directly attached to ring atoms
-
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- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/04—1,2,3-Triazoles; Hydrogenated 1,2,3-triazoles
-
- 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
- A61K51/04—Organic compounds
- A61K51/041—Heterocyclic compounds
- 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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- 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
- A61K51/04—Organic compounds
- A61K51/08—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins
- A61K51/082—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins the peptide being a RGD-containing peptide
-
- 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
- A61K51/04—Organic compounds
- A61K51/08—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins
- A61K51/088—Peptides, e.g. proteins, carriers being peptides, polyamino acids, proteins conjugates with carriers being peptides, polyamino acids or proteins
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
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- C07B59/008—Peptides; Proteins
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
- C07D261/02—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings
- C07D261/06—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members
- C07D261/08—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more 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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Description
(I)酸化的放射性ヨウ素化
(ii)求核性同位体交換
(iii)求核性非同位体交換
(iv)求電子性標識
経路(iv)は、通例、トリアルキルスズ、トリアルキルシリル或いは有機水銀又は有機タリウム誘導体のような有機金属前駆体の使用を必要とする。これらのうち、室温での領域特異的放射性ヨウ素化が可能である点で、放射性ヨード脱スタンニル化経路が好ましい求電子性標識方法として認識されている。Eersels et alは、特に優れた放射性ヨウ素化方法は存在しないと結論づけた。
(a)(i)第1の分子構造、(ii)脱離基、(iii)クリック化学反応に関与し得る第1の官能基、及び任意には(iv)第1の官能基と分子構造との間のリンカーを含む第1の化合物を、放射性試薬の放射性成分で脱離基を置換するのに十分な条件下で放射性試薬と反応させて第1の放射性化合物を生成する段階、
(b)(i)第2の分子構造、及び(ii)第1の官能基とのクリック化学反応に関与し得る第2の相補的官能基を含む第2の化合物であって、任意には第2の化合物と第2の官能基との間にリンカーを含む第2の化合物を用意する段階、
(c)第1の放射性化合物の第1の官能基をクリック化学反応によって第2の化合物の相補的官能基と反応させて放射性リガンド又は基質を生成する段階、並びに
(d)放射性リガンド又は基質を単離する段階
を含む方法が開示されている。
(i)次の式(Ia)又は式(Ib)の化合物を用意する段階、及び
を含む方法を提供する。
I*はヨウ素の放射性同位体であり、
L1は存在しても存在しなくてもよいリンカー基であり、
BTMは生物学的標的化部分である。
第1の態様の方法で使用するための好ましい前駆体は式(Ia)のアジドであり、したがって好ましい生成物は式(IIIa)のトリアゾールである。
−ソマトスタチン、オクトレオチド及び類似体。
−STレセプターに結合するペプチド(ここで、STとは大腸菌(E.coli)及び他の微生物によって産生される耐熱性毒素をいう。)。
−ボンベシン。
−血管作用性小腸ペプチド。
−ニューロテンシン。
−ラミニンフラグメント、例えば、YIGSR、PDSGR、IKVAV、LRE及びKCQAGTFALRGDPQG。
−白血球集積部位を標的化するためのN−ホルミル走化性ペプチド。
−血小板第4因子(PF4)及びそのフラグメント。
−例えば血管形成を標的化し得るRGD(Arg−Gly−Asp)含有ペプチド[R.Pasqualini et al.,Nat Biotechnol.1997 Jun;15(6):542−6]、[E.Ruoslahti,Kidney Int.1997 May;51(5):1413−7]。
−α2−抗プラスミン、フィブロネクチン、β−カゼイン、フィブリノーゲン又はトロンボスポンジンのペプチドフラグメント。α2−抗プラスミン、フィブロネクチン、β−カゼイン、フィブリノーゲン及びトロンボスポンジンのアミノ酸配列は、以下の参考文献に見出すことができる。α2−抗プラスミン前駆体[M.Tone et al.,J.Biochem,102,1033(1987)]、β−カゼイン[L.Hansson et al,Gene,139,193(1994)]、フィブロネクチン[A.Gutman et al,FEBS Lett.,207,145(1996)]、トロンボスポンジン1前駆体[V.Dixit et al,Proc.Natl.Acad.Sci.,USA,83,5449(1986)]、R.F.Doolittle,Ann.Rev.Biochem.,53,195(1984)。
−アンギオテンシンII:Asp−Arg−Val−Tyr−Ile−His−Pro−Phe(E.C.Jorgensen et al,J.Med.Chem.,1979,Vol 22,9,1038−1044)及び[Sar,Ile]アンギオテンシンII:Sar−Arg−Val−Tyr−Ile−His−Pro−Ile(R.K.Turker et al.,Science,1972,177,1203)のようなアンギオテンシンの基質又は阻害剤であるペプチド。
−アンギオテンシンI:Asp−Arg−Val−Tyr−Ile−His−Pro−Phe−His−Leu。
式A中、aは好ましくは1である。
別法として、式Bio2のプロピオン酸誘導体に基づくPEG様構造も使用できる。
(i)酸化剤の存在下で次の式(IV)又は式(V)の前駆体を放射性ヨウ化物イオンの供給物と反応させて次の式(IIb)の化合物を得る段階、及び
(ii)M2がM1基である場合には、脱保護してM1基を除去する段階
を含む方法を提供する。
好適なカセットは直線状に並んだ弁の列を含み、その各々は倒立隔壁密封バイアルの針穿刺又は気密連結継手によって試薬又はバイアルを装着することができるポートに結合している。各弁は、自動合成装置の対応する可動アームとかみ合うはめ込み型継手を有している。かくして、カセットを自動合成装置に装着した場合、アームの外部回転が弁の開閉を制御する。自動合成装置の追加の可動部分は、注射器のプランジャー先端をつかみ、それによって注射器外筒を上昇又は降下させるように設計されている。
DIPEA; ジイソプロピルエチルアミン
DMF: ジメチルホルムアミド
HPLC: 高速液体クロマトグラフィー
MeCN: アセトニトリル
PAA: 過酢酸
RP−HPLC: 逆相HPLC
RT: 室温
THF: テトラヒドロフラン
実施例1:ヨードアセチレンの合成
リン酸ナトリウム緩衝液(1ml、pH7.4、25mM)で予め濡らしたヨードゲン管(Thermo Scientific Pierce Protein Research Products社)に、リン酸ナトリウム緩衝液(100μl、pH7.4、25mM)、[127I]−ヨウ化ナトリウム(10μl、0.01M水酸化ナトリウム中10mM溶液、1×10-7モル)及び[123I]−ヨウ化ナトリウム(10μl、18MBq)を添加した。室温で6分間のインキュベーション後、前記反応体を氷上のホイートンバイアルに移し、次いでエチニルトリブチルスタンナンのTHF溶液(Sigma−Aldrich社、38μl、1mg/ml、1.2×10-7モル)を添加した。バイアルを密封し、反応混合物を室温まで放温した後、逆相HPLC分析に付した。
氷上のホイートンバイアルに、[127I]−ヨウ化ナトリウム(10μl、0.01M水酸化ナトリウム中10mM溶液、1×10-7モル)、[123I]−ヨウ化ナトリウム(10μl、18MBq)、塩酸(100μl、1M)、過酸化水素(50μl、3%水溶液、4.4×10-5モル)及びエチニルトリブチルスタンナンのTHF溶液(Sigma−Aldrich社、38μl、1mg/ml、1.2×10-7モル)を添加した。バイアルを密封し、反応混合物を室温まで放温した後、逆相HPLC分析に付した。
Claims (3)
- 次の式(II)の化合物の製造方法であって、
(i)酸化剤の存在下で次の式(IV)又は式(V)の前駆体を放射性ヨウ化物イオンの供給物と反応させて次の式(IIb)の化合物を得る段階、及び
(ii)M2がM1基である場合には、脱保護してM1基を除去する段階
を含む方法。
M2はH又はM1(ここで、M1はアルキン保護基である。)であり、各Raは独立にC1-4アルキルである。
- I * が 123 I、 124 I及び 131 Iから選択される、請求項1記載の方法。
- 次の式(IIb)の化合物。
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US20150299343A1 (en) * | 2012-11-05 | 2015-10-22 | The Regents Of The University Of California | Polymer plasticizing agents that produce polymers that do not release endocrine disrupting compounds |
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