Automated radiochemical synthesis of [18F]FBEM: a thiol reactive synthon for radiofluorination of peptides and proteins.
Automated radiochemical synthesis of [18F]FBEM: a thiol reactive synthon for radiofluorination of peptides and proteins.
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[18F] FBEM的自动放射化合物合成:用于肽和蛋白质放射性氟化的硫醇反应性合成。
DOI:
10.1016/j.apradiso.2010.09.023
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发表时间:
2011-02
影响因子:
1.6
通讯作者:
Chen, Xiaoyuan
中科院分区:
文献类型:
--
作者:
Kiesewetter, Dale O.;Jacobson, Orit;Lang, Lixin;Chen, Xiaoyuan
The automated radiochemical synthesis of N-[2-(4-[18F]fluorobenzamido)ethyl]maleimide ([18F]FBEM, IUPAC name: N-maleoylethyl-4-[18F]fluorobenzamide), a prosthetic group for radiolabeling the free sulfhydryl groups of peptides and proteins is herein described. 4-[18F]Fluorobenzoic acid was first prepared by nucleophilic displacement of a trimethylammonium moiety on a pentamethylbenzyl benzoate ester with [18F]fluoride. In the second step the ester was cleaved under acidic conditions. Finally, 4-[18F]fluorobenzoic acid was coupled to N-(2-aminoethyl)maleimide using diethylcyanophosphate and diisopropylethyl amine. Following high-performance liquid chromatography (HPLC) purification, [18F]FBEM was obtained in 17.3 ± 7.1% yield (not decay corrected) in a time of approximately 95 min. Isolation from the HPLC eluate and preparation for subsequent use, which is conducted manually, requires an additional 10–15 minutes. Measured specific activity for three batches was 181.3, 251.6, and 351.5 GBq/μmol at the end of bombardment (EOB).
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影响因子:
1.9
作者:
Kiesewetter, Dale O.;Kramer-Marek, Gabriela;Ma, Ying;Capala, Jacek
通讯作者:
Capala, Jacek
影响因子:
3.1
作者:
Kiesewetter, DO;Jagoda, EM;Eckelman, WC
通讯作者:
Eckelman, WC
影响因子:
4.7
作者:
Wuest, Frank;Berndt, Mathias;Pietzsch, Jens
通讯作者:
Pietzsch, Jens
影响因子:
7.3
作者:
Lang, LX;Jagoda, E;Eckelman, WC
通讯作者:
Eckelman, WC
影响因子:
3.1
作者:
Berndt, Mathias;Pietzsch, Jens;Wuest, Frank
通讯作者:
Wuest, Frank