[EN] SUBSTITUTED ARYL-FLUOROBORATES AS IMAGING AGENTS<br/>[FR] ARYL-FLUOROBORATES SUBSTITUÉS EN TANT QU'AGENTS D'IMAGERIE
申请人:UNIV BRITISH COLUMBIA
公开号:WO2009012596A1
公开(公告)日:2009-01-29
Substituted aryl-boron compounds comprising at least one 18F atom, as illustrated by the formula (I), where at least one of Y1 or Y2 is 18F and A1 is a substituted aromatic ring, with G1-5 being, independently, C or N, and where the substitutents of the aromatic ring or polycyclic moiety (other than boron) comprise at least one electron-withdrawing group (EWG), providing that sigma total (σ total) for all substituents on the aromatic ring or polycyclic moiety except B is about 0.06 or more when said at least one EWG is positioned ortho to B, or about 0.2 or more when no EWG is positioned ortho to B. The compounds include neutral (N=1) and ionic borate (N=2) embodiments. The compounds are useful as positron emission tomography (PET) imaging agents.
Capturing aqueous [18F]-fluoride with an arylboronic ester for PET: Synthesis and aqueous stability of a fluorescent [18F]-labeled aryltrifluoroborate
作者:Richard Ting、Justin Lo、Michael J. Adam、Thomas J. Ruth、David M. Perrin
DOI:10.1016/j.jfluchem.2008.01.011
日期:2008.5
The aqueous stability of aryltrifluoroborates is of importance to their use in transition metal mediated coupling reactions as well as their potential use in [F-18]-labeled aryltrifluoroborate PET imaging agents. Nevertheless, few studies have fully characterized the solvolysis of fluoride from an aryltrifluoroborate in water. Using [F-19] NMR, fluorescence and [F-18]-labeling techniques, we disclose the composition of an aryltrifluoroborate of exceptional kinetic stability with respect to solvolytic defluoridation. This work not only highlights the potential of using [F-18]-labeled aryltrifluoroborates for PET tracers, but provides a chemical platform and a general approach for evaluating the stability of other aryltrifluoroborates. (c) 2008 Elsevier B.V. All rights reserved.
Facile synthesis and 18 F-radiolabeling of α 4 β 1 -specific LLP2A-aryltrifluoroborate peptidomimetic conjugates
作者:Daniel Walker、Ying Li、Áron Roxin、Paul Schaffer、Michael J. Adam、David M. Perrin
DOI:10.1016/j.bmcl.2016.08.011
日期:2016.10
labeling. A simple method for labeling complex biomolecules can be achieved with arylboronicacids that readily capture aqueous [18F]-fluoride ion resulting in an 18F-labeled aryltrifluoroborate ([18F]-ArBF3−) radioprosthetic group. Herein, we present the first radiosynthesis of an 18F-labeled LLP2A conjugate by both one-step 18F‐labeling and one-pot two-step 18F-labeling post-‘click’ conjugation of the
Toward [<sup>18</sup>F]-Labeled Aryltrifluoroborate Radiotracers: In Vivo Positron Emission Tomography Imaging of Stable Aryltrifluoroborate Clearance in Mice
作者:Richard Ting、Curtis Harwig、Ulrich auf dem Keller、Siobhan McCormick、Pamela Austin、Christopher M. Overall、Michael J. Adam、Thomas J. Ruth、David M. Perrin
DOI:10.1021/ja802734t
日期:2008.9.10
The use of a boronic ester as a captor of aqueous [(18)F]-fluoride has been previously suggested as a means of labeling biomolecules in onestep for positron emission tomography (PET) imaging. For this approach to be seriously considered, the [(18)F]-labeled trifluoroborate should be humorally stable such that it neither leaches free [(18)F]-fluoride to the bone nor accumulates therein. Herein, we