Improved synthesis of 2′-deoxy-2′[18F]-fluoro-1-β-D-arabinofuranosyl-5-iodouracil ([18F]-FIAU)

被引：29
作者：
Anderson, Harry [2 ]
Pillarsetty, NagaVaraKishore [1 ]
Cantorias, Melchor [1 ]
Lewis, Jason S. [1 ]
机构：
[1] Mem Sloan Kettering Canc Ctr, Radiochem Serv, Dept Radiol, New York, NY 10065 USA
[2] Advion BioSyst, Ithaca, NY 14850 USA
来源：
NUCLEAR MEDICINE AND BIOLOGY | 2010年 / 37卷 / 04期
关键词：
FIAU; PET; Microfluidics; HSV1-tk; REPORTER GENE-EXPRESSION; IN-VIVO; NUCLEOSIDES; PET; LYMPHOCYTES;
D O I：
10.1016/j.nucmedbio.2010.01.003
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
An improved synthesis of 2'-[F-18]-fluoro-2'-deoxy-1-beta-D-arabinofuranosyl-5-iodouracil ([F-18]-FIAU) has been developed. The method utilizes trimethylsilyl trifluoromethanesulfonate (TMSOTf) catalyzed coupling of 2-deoxy-2-[F-18]-fluoro-1,3,5-tri-O-benzoyl-D-arabinofuranose with 2,4-bis(trimethylsilyloxy)-5-iodouracil to yield the protected dibenzoyl-[F-18]-FIAU. Dibenzoyl-[F-18]-FIAU was deprotected with sodium methoxide to yield a mixture of alpha- and beta-anomers in a ratio of 1:1, which were purified by HPLC. The procedure described in this article eliminates the need for HBr activation of the sugar prior to coupling with silylated iodouracil and is suitable for automation. The total reaction time was about 110 min, starting from [F-18]-fluoride. The average isolated yield of the required beta-anomer was 10 +/- 6% (decay corrected) with average specific activity of 125 mCi/mu mol. (C) 2010 Elsevier Inc. All rights reserved.
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页码：439 / 442
页数：4
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