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The synthesis of [1-11C]Tpi from Trp and [11C]formaldehyde was examined as a model reaction with\nthe aim of developing a facile and effective method for the labeling of peptides with carbon-11. The Pictet-Spengler reaction\nof Trp and [11C]formaldehyde in acidic media (TsOH or HCl) afforded the desired [1-11C]Tpi in a moderate radiochemical yield.\nHerein, the application of a Pictet-Spengler reaction to an aqueous solution of Trp•HCl gave the desired product with a\nradiochemical yield of 45.2%. The RGD peptide cyclo[Arg-Gly-Asp-D-Tyr-Lys] was then selected as a substrate for the labeling\nreaction with [11C]formaldehyde. The radiolabeling of a Trp•HCl-containing RGD peptide using the Pictet-Spengler reaction\nwas successful. Furthermore, the remote-controlled synthesis of a [1-11C]Tpi-containing RGD peptide was attempted by using\nan automatic production system to generate [11C]CH3I. The radiochemical yield of the [1-11C]Tpi-containing RGD at the end of\nsynthesis (EOS) was 5.9 ± 1.9% (n = 4), for a total synthesis time of about 35 min. The specific activity was 85.7 ± 9.4 GBq/μmol\nat the EOS. 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Carbon-11 radiolabeling of an oligopeptide containing tryptophan hydrochloride via a Pictet-Spengler reaction using carbon-11 formaldehyde
https://repo.qst.go.jp/records/46745
https://repo.qst.go.jp/records/46745c6034037-f204-4ff3-b7c7-f6371f8d9b98
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-03-18 | |||||
タイトル | ||||||
タイトル | Carbon-11 radiolabeling of an oligopeptide containing tryptophan hydrochloride via a Pictet-Spengler reaction using carbon-11 formaldehyde | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Hanyu, Masayuki
× Hanyu, Masayuki× Takada, Yuuki× Hashimoto, Hiroki× Kawamura, Kazunori× Zhang, Ming-Rong× Fukumura, Toshimitsu× 破入 正行× 高田 由貴× 橋本 裕輝× 河村 和紀× 張 明栄× 福村 利光 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A procedure for the synthesis of a11C-labeled oligopeptide containing [1-11C]1,2,3,4-tetrahydro-β-carboline-3-carboxylic acid ([1-11C]Tpi) from the corresponding Trp•HCl-containing peptides has been developed involving a Pictet-Spengler reaction with [11C]formaldehyde. The synthesis of [1-11C]Tpi from Trp and [11C]formaldehyde was examined as a model reaction with the aim of developing a facile and effective method for the labeling of peptides with carbon-11. The Pictet-Spengler reaction of Trp and [11C]formaldehyde in acidic media (TsOH or HCl) afforded the desired [1-11C]Tpi in a moderate radiochemical yield. Herein, the application of a Pictet-Spengler reaction to an aqueous solution of Trp•HCl gave the desired product with a radiochemical yield of 45.2%. The RGD peptide cyclo[Arg-Gly-Asp-D-Tyr-Lys] was then selected as a substrate for the labeling reaction with [11C]formaldehyde. The radiolabeling of a Trp•HCl-containing RGD peptide using the Pictet-Spengler reaction was successful. Furthermore, the remote-controlled synthesis of a [1-11C]Tpi-containing RGD peptide was attempted by using an automatic production system to generate [11C]CH3I. The radiochemical yield of the [1-11C]Tpi-containing RGD at the end of synthesis (EOS) was 5.9 ± 1.9% (n = 4), for a total synthesis time of about 35 min. The specific activity was 85.7 ± 9.4 GBq/μmol at the EOS. Copyright © 2013 European Peptide Society and John Wiley & Sons, Ltd. |
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書誌情報 |
Journal of Peptide Science 巻 19, 号 10, p. 663-668, 発行日 2013-08 |
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出版者 | ||||||
出版者 | wileyonlinelibrary | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1075-2617 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | DOI 10.1002/psc.2546 |