Radiosyntheses of two positron emission tomography probes: [11C]Oseltamivir and its active metabolite [11C]Ro 64-0802
摘要:
Oseltamivir phosphate (Tamiflu (R), 1:H3PO4 is an orally active anti-influenza drug, which is hydrolyzed by esterase to its carboxylate metabolite Ro 64-0802 ( 2) with potent activity inhibiting neuraminidase. In this study, for the first time, we synthesized carbon-11-labeled oseltamivir ([C-11]1) and Ro 64- 0802 ([C-11] 2) as two novel positron emission tomography probes and demonstrated that [C-11] 1 had twofold higher radioactivity concentration in the mouse brains than [C-11]2. (c) 2008 Elsevier Ltd. All rights reserved.