Synthesis of carbon-11-labeled piperidine ring of N-[omega-(6-methoxynaphthalen-1-yl)alkyl] derivatives as new selective PET sigma1 receptor probes.
Mingzhang Gao, Min Wang, Gary D Hutchins, Qi-Huang Zheng
Index: Appl. Radiat. Isot. 68(3) , 459-65, (2010)
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Abstract
Carbon-11-labeled piperidine ring of N-[omega-(6-methoxynaphthalen-1-yl)alkyl] derivatives were first designed and synthesized as new selective PET sigma(1) receptor probes. The target tracers were prepared by O-[(11)C]methylation of their corresponding phenolic hydroxyl precursors using [(11)C]CH(3)OTf under basic conditions and isolated by a simplified SPE method in 40-50% radiochemical yields based on [(11)C]CO(2) and decay corrected to EOB. The overall synthesis time from EOB was 15-20 min, the radiochemical purity was >99%, and the specific activity at EOS was 111-185 GBq/micromol.Copyright 2009 Elsevier Ltd. All rights reserved.
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