Maleimide-Dimethylfuran <i>exo</i> Adducts: Effective Maleimide Protection in the Synthesis of Oligonucleotide Conjugates
作者:Albert Sánchez、Enrique Pedroso、Anna Grandas
DOI:10.1021/ol201690b
日期:2011.8.19
The reaction of maleimide-containing compounds with 2,5-dimethylfuran gives a mixture of exo and endo isomers from which the exo cycloadduct can be easily isolated taking advantage of its stability in concentrated aqueous ammonia. Bifunctional compounds incorporating a dimethylfuran-protected maleimide (exo adduct) have been attached to resin-linked oligonucleotide chains. Removal of protecting groups