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Nucleoside Analogues For Positron Emission Tomography Imaging And To Study Radiation Mediated Generation Of Radicals From Azides, Maria E. De Cabrera

FIU Electronic Theses and Dissertations

Gemcitabine is a potent anticancer cytidine analogue used to treat solid tumors. Its efficacy is diminished by rapid deamination to a toxic uridine derivative by cytidine deaminase. To overcome this limitation and add radioactive nuclei (¹⁸F or ⁶⁸Ga) for PET imaging, I synthesized two 4-N­-alkylgemcitabine analogues i) bearing β-keto tosylate moiety for subsequent ¹⁸F-fluorination and ii) having SCN-Bn-NOTA chelator to complex ⁶⁸Ga. The first was synthesized by replacement of tosylamide in 4-N­-tosylgemcitabine with 1-amino-10-undecene, followed by elaboration of terminal alkene through dihydroxylation, regioselective tosylation and oxidation. Subsequent fluorination using KF in …