Application of Microreactor to the Preparation of C-11-Labeled Compounds <i>via</i> <i>O</i>-[<sup>11</sup>C]Methylation with [<sup>11</sup>C]CH<sub>3</sub>I: Rapid Synthesis of [<sup>11</sup>C]Raclopride
Highlighting the versatility of the Tracerlab synthesis modules. Part 2: fully automated production of [11C]-labeled radiopharmaceuticals using a Tracerlab FXC-Pro
作者:Xia Shao、Raphaël Hoareau、Adam C. Runkle、Louis J. M. Tluczek、Brian G. Hockley、Bradford D. Henderson、Peter J. H. Scott
DOI:10.1002/jlcr.1937
日期:2011.12
Herein, we continue our series of articles showcasing the versatility of the Tracerlab FX synthesis modules by presenting straightforward, fully automated methods for preparing a range of carbon‐11labeled radiopharmaceuticals using a Tracerlab FXC‐Pro. Strategies for production of [11C]acetate, [11C]carfentanil, [11C]choline, [11C]3‐amino‐4‐[2‐[(di(methyl)amino)methyl]phenyl]sulfanylbenzonitrile ([11C]DASB)
[11C]raclopride from [11C]methyl triflate. Conditions for the radiolabelling were optimized to obtain a simple and reproducible procedure suitable for automation. [11C]Raclopride was prepared with an average radiochemical yield of 55–65% (decay corrected, based on starting [11C]methyl triflate) in a total synthesis time (including purification and formulation of product) of 35 min. The radiolabelling procedure used
Continuous-flow synthesis of [<sup>11</sup>C]raclopride, a positron emission tomography radiotracer, on a microfluidic chip
作者:Samar Haroun、Zahra Sanei、Salma Jivan、Paul Schaffer、Thomas J. Ruth、Paul C.H. Li
DOI:10.1139/cjc-2012-0331
日期:2013.5
11C-labelled radiotracers such as [11C]raclopride are produced in a process that can take between 45 and 60 min to complete. These conventional approaches can consume upwards of 75% of the 11C (t1/...
An Improved Synthesis of PET Dopamine D<sub>2</sub> Receptors Radioligand [<sup>11</sup>C]Raclopride
作者:Xiangshu Fei、Bruce H. Mock、Timothy R. DeGrado、Ji‐Quan Wang、Barbara E. Glick‐Wilson、Michael L. Sullivan、Gary D. Hutchins、Qi‐Huang Zheng
DOI:10.1081/scc-120034174
日期:2004.12.31
An improved synthesis of [C-11]raclopride is reported. The precursor desmethyl-raclopride was synthesized from 3,5-dichloro-2,6-dimethoxybenzoic acid and (S)-(-)-2-aminoethyl-1-ethylpyrrolidine via a straightforward, four-step synthetic approach with 29% overall chemical yield. [C-11]Raclopride was prepared by O-[C-11]methylation of the precursor with [C-11]methyl triflate and purification with a semi-preparative HPLC method in 20-34% radiochemical yield, based on [C-11]methyl bromide, decay corrected to end of bombardment (EOB).