33900-24-2Relevant academic research and scientific papers
Development of a temporary marker for peptides
Sameiro,Goncalves,Maia, Hernani L.S.
, p. 1480 - 1485 (2007/10/03)
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.
A temporary marker for biological applications
Sameiro, M,Gon?alves, T,Maia, Hernani L.S
, p. 7775 - 7777 (2007/10/03)
Having in mind the development of new colour labelled amino acid derivatives, a carboxyl azo dye was coupled to amino 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 results. This allows the use of the chromophore as a temporary marker.
The synthesis of di(hydroxyalkyl) substituted bicyclic guanidines
Madder, A.,Muenster, I.,Rolle, U.,Clercq, P. J. De
, p. 613 - 622 (2007/10/03)
The synthesis of the enantiomerically pure bicyclic guanidines 3a and 3b is described.The convergent strategy is based on methodology developed by Schmidtchen.The therefore required amine components 6 and 9 obtained from methionine and L-glutamic acid, respectively.
