Vander Borght T, Labar D, Pauwels S, Lambotte L. Production of [2-11C]thymidine for quantification of cellular proliferation with PET.
INTERNATIONAL JOURNAL OF RADIATION APPLICATIONS AND INSTRUMENTATION. PART A, APPLIED RADIATION AND ISOTOPES 1991;
42:103-4. [PMID:
1850393 DOI:
10.1016/0883-2889(91)90131-j]
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Abstract
A three-step synthesis of [2-11C]thymidine, using [11C]urea as precursor, is described. [2-11C]Thymine was obtained by cyclization of [11C]urea and diethyl beta-methylmalate in fuming sulfuric acid. After purification of the reaction mixture, [2-11C]thymine and 2'-deoxyribose-1-phosphate were incubated in the presence of thymidine phosphorylase to form [2-11C]thymidine. The whole synthesis procedure, including purification and pharmaceutical package, was achieved within 60 min with a decay corrected yield of 30-35%.
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