Issue 23, 2013

CN and NC solution phase peptide synthesis using the N-acyl 4-nitrobenzenesulfonamide as protection of the carboxylic function

Abstract

In this paper we describe a solution phase peptide synthesis strategy using the 4-nitrobenzenesulfonamido/N-methyl-4-nitrobenzenesulfonamido group as a protecting/activating system of the carboxyl function. The 4-nitrobenzenesulfonamido group is stable during peptide chain elongation (Fmoc chemistry). The N-aminoacyl or N-dipeptidyl-4-nitrobenzensulfonamides, when activated by methylation, can be easily coupled with another amino acid or reconverted into the free-carboxyl function amino acids or peptides. This activatable protecting group allows both the CN and the NC direction solution phase peptide synthesis. We also verified that the absolute configuration at the chiral centers does not change during the coupling reactions.

Graphical abstract: C → N and N → C solution phase peptide synthesis using the N-acyl 4-nitrobenzenesulfonamide as protection of the carboxylic function

Supplementary files

Article information

Article type
Paper
Submitted
25 Jan 2013
Accepted
11 Apr 2013
First published
12 Apr 2013

Org. Biomol. Chem., 2013,11, 3786-3796

CN and NC solution phase peptide synthesis using the N-acyl 4-nitrobenzenesulfonamide as protection of the carboxylic function

R. De Marco, M. Spinella, A. De Lorenzo, A. Leggio and A. Liguori, Org. Biomol. Chem., 2013, 11, 3786 DOI: 10.1039/C3OB40169C

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