Development of a temporary marker for peptidesElectronic supplementary information (ESI) available: IR, UV, 1H NMR and 13C NMR spectra of compounds 2a–i, 3b–h, 4b–h, 5, 6c and h, 7h, 8–12, 13c and h, and 14. See http://www.rsc.org/suppdata/ob/b2/b212470j/
acid esters to give the corresponding orange N-acyl derivatives, which were in turn further acylated at their N-terminus with Boc for investigation of the conditions of possible cleavage of the chromophore by electrolysis or with nucleophiles. While difficulties were met with electrolysis owing to competitive reduction of the azo group, cleavage with N,N-diethylaminoethylamine (DEAEA) gave satisfactory
Development of a temporary marker for peptidesElectronic supplementary information (ESI) available: IR, UV, 1H NMR and 13C NMR spectra of compounds 2a–i, 3b–h, 4b–h, 5, 6c and h, 7h, 8–12, 13c and h, and 14. See http://www.rsc.org/suppdata/ob/b2/b212470j/
作者:M. Sameiro T. Gonçalves、Hernâni L. S. Maia
DOI:10.1039/b212470j
日期:2003.4.23
3-[(N,N-Dimethylaminophenyl)-4′-diazenyl]benzoic acid was coupled with several amino acid esters and the product acylated further with Boc. The material thus obtained was then submitted to cleavage by electrolysis and nucleophilic attack in order to evaluate the possibility of using this chromophore as a temporary marker.