Different thymidine derivatives bearing either an iodoaryl moiety at the 5' position or a dialkylsilyl group at the 3' position have been efficiently synthesized as precursors for carbon-11 or fluorine-18 labeling, respectively. Furthermore, iodoarylated thymidine derivatives have been incorporated into oligonucleotides giving an original way to label them with carbon-11. (C) 2009 Elsevier Ltd. All rights reserved.
Silicon‐Based Chemistry: An Original and Efficient One‐Step Approach to [
<sup>18</sup>
F]‐Nucleosides and [
<sup>18</sup>
F]‐Oligonucleotides for PET Imaging
Take it eaSi! Nucleosides, dinucleotides, and oneoligonucleotide, all modified by click chemistry, have for the first time been directly and very efficiently labeled with 18F by using a silicon‐based, one‐stepapproach that opens the way for the development of a new class of positron emission tomography (PET) tracers (see graphic).