Synthesis of [18F]Ro41-0960, a potent catechol-O-methyltransferase inhibitor, for PET studies
作者:Y.-S. Ding、Y. Sugano、J. Koomen、D. Aggarwal
DOI:10.1002/(sici)1099-1344(199704)39:4<303::aid-jlcr977>3.0.co;2-w
日期:1997.4
Ro41-0960 (3,4-dihydroxy-5-nitro-2'-fluorobenzophene) is a potent, fluorine containing COMT inhibitor. In order to map catechol-O-methyltransferase (COMT) in vivo with PET, no-carrier-added [F-18]Ro41-0960 was synthesized by the nucleophilic aromatic substitution of [F-18]fluoride for 2'-nitro on 3,4-dimeihoxy-5,2'-dinitrobenzophenone, followed by hydrolysis with HBr. During the course of this study it was found that [F-18]fluoromethane ([F-18]CH3F) was generated as the side product of nucleophilic aromatic substitution reaction. Various precursors with different hydroxyl protecting groups were then investigated for the effects on this side reaction.