Ethoxyethylidene protecting group prevents N-overacylation in aminooxy peptide synthesis
作者:Vincent Duléry、Olivier Renaudet、Pascal Dumy
DOI:10.1016/j.tet.2007.09.015
日期:2007.11
oxime ligation. Aminooxyaceticacid (Aoa) was protected with 1-ethoxyethylidene group (Eei) then incorporated either using PyBOP or as N-hydroxysuccinimidyl ester at N-terminal end or at a lysine side chain into model peptides in solution and on solid support. Due to the Eei protecting group, these new reagents prevent the N-overacylation side reaction in comparison with Boc–Aoa derivatives. Subsequent