The tertiary-butyl group: Selective protection of the anomeric centre and evaluation of its orthogonal cleavage

摘要

The tertiary-butyl group has not been examined extensively as a protecting group. In this work, we describe the synthesis of tert-butyl glycosides via the Fischer glycosylation protocol. Furthermore, its utility as a temporary anomeric protecting group was evaluated. A range of differentially protected monosaccharides was used to investigate the stability of the tert-butyl group upon the introduction of other protecting groups; and compatibility of its cleavage in the presence of the latter. (C) 2018 Elsevier Ltd. All rights reserved.