Synthesis of [19, 35, 36-13C3]-labeled TAK779 as a molecular probe
作者:Hiroyuki Konno、Saburo Aimoto、Steven O. Smith、Kazuto Nosaka、Kenichi Akaji
DOI:10.1016/j.bmc.2009.07.026
日期:2009.8
and 36 was produced. A commercially available [13C]-methyl iodide was employed for the labeling. Starting from a known carboxylic acid segment containing no labeled carbon, the labeled TAK779 was constructed by the successive coupling of [13C]-labeled tolyl boronic ester by the Suzuki–Miyaura reaction and a [13C]-labeled aniline segment by amide bond formation.
Three isotopically labeled tri-p-tolylamines, 15N, 15N2D27, and mono-13CH3 have been prepared using zeolite mediated bromination or nitration of toluenes as one of the key steps. The obtained-4-nitrotoluenes were reduced to 4-aminotoluenes, and coupled, via a palladium catalyzed amination reaction, with 4-bromotoluenes to afford di- and tri-p-tolylamines. The di-p-tolylamines were readily transformed