Highly functionalized peptoid oligomers generated by sequential click chemistry reactions on solid-phase support

ORGN 594

Justin M. Holub, jmh456@nyu.edu, Hangjun Jang, hj293@nyu.edu, and Kent Kirshenbaum, kent@nyu.edu. Department of Chemistry, New York University, 100 Washington Square East, Rm 1001, New York, NY 10003-6688
Oligo-N-substituted glycine (peptoid) scaffolds were used as substrates for azide-alkyne [3+2]-cycloaddition reactions and then elaborated through additional rounds of oligomerization and cycloaddition. We demonstrate that the 1,2,3-triazole linkages of these Click Chemistry reactions are fully compatible with standard peptoid “submonomer” synthesis protocols on solid-phase support. Up to four complete cycles of “sequential click chemistry” were conducted in high yield, generating dodecamers functionalized with four distinct side-chain conjugates. This technique will allow for the generation of complex peptidomimetic products in which multiple heterogeneous pendant groups are site-specifically positioned along the oligomer scaffold.