A concise and efficient synthesis of flumazenil and its precursor for radiolabeling with fluorine-18
作者:Sean R. Donohue、Robert F. Dannals
DOI:10.1016/j.tetlet.2009.10.029
日期:2009.12
Presently there is a strong interest in developing radioligands for in vivo imaging the GABA(A)-Bz site with positron emission tomography (PET). Flumazenil (1), a high-affinity GABA(A)-Bz site inverse agonist, is amenable for C-11 and F-18-labeling. The Current methods for synthesis of I and its precursor for F-18-labeling are not ideal and restrict structure-activity relationship (SAR) development. Herein we present a novel and less troublesome synthesis of 1 and its cognates to aid in the development of improved radioligands for PET imaging of GABA(A)-Bz site. (C) 2009 Elsevier Ltd. All rights reserved.