Synthesis and labeling of 5′-O-(4,4′-dimethoxytrityl)-2,3′-anhydrothymidine for [18F]FLT preparation

被引:17
|
作者
Blocher, A [1 ]
Kuntzsch, M [1 ]
Wei, R [1 ]
Machulla, HJ [1 ]
机构
[1] Univ Klinikum Tubingen, PET Zentrum, Sekt Radiopharm, D-72076 Tubingen, Germany
关键词
D O I
10.1023/A:1015042227131
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
For in vivo measurement of DNA synthesis in the patient's tumour 3'-[F-18]fluoro-3'-deoxythymidine (FLT) has been shown to be very promising. As a new labeling precursor 5'-O-(4,4'-dimethoxytrityl)-2,3'-anhydrothymidine (DNITThy) was chosen and an organic synthesis was developed including NMR and MS data for characterisation. The F-18-labeling of DMTThy can be performed within 30 minutes in radiochemical yields of almost 20% when using polar solvents such as DMF or DMSO and a temperature of 160degreesC. Hydrolysis is completed with 1N HCl at 50degreesC within 10 minutes without losses.
引用
收藏
页码:55 / 58
页数:4
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