Equilibration in bicyclic pyroglutamates by ring opening-reclosure
作者:Mark G. Moloney、Muhammad Yaqoob
DOI:10.1016/j.tetlet.2008.08.021
日期:2008.10
Enantiopure bicyclic tetramates, readily obtained by Dieckmann ring closure on oxazolidine-derived templates, can be further converted to hydroxypyroglutamates by kinetically controlled nucleophilic additions, and some of these products are capable of equilibration via a facile retro-aldol/aldol reclosure.