作者:Asmik Oganesyan、Iris A. Cruz、Roberto B. Amador、Nohemy A. Sorto、Jose Lozano、Carlos E. Godinez、Jaime Anguiano、Heather Pace、Ghiwa Sabih、Carlos G. Gutierrez
DOI:10.1021/ol702206d
日期:2007.11.1
An advance in the selective acylation of polyamines having identical or similar amine functions is reported. While nucleophilicity differences between the various amine functions are slight, the corresponding conjugate acids exhibit pK(a) values over a significant range. We have used proton as polyamine protecting group: the monoamine resulting from single deprotonation of a polyammonium compound has allowed for high yields of selective acylation.