Perali RS, Boddu UR, Sankar DC. [1,2]- vs [2,3]-Wittig Rearrangement in Carbohydrate Derived Alkenyl Systems.
Org Lett 2021;
23:3850-3853. [PMID:
33929209 DOI:
10.1021/acs.orglett.1c00988]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple and efficient strategy for the regio- and stereoselective synthesis of carbon-branched sugar derivatives is described. The successful implementation of Wittig rearrangement on substrates derived by Ferrier rearrangement of various glycals and 3-O-alkenyl glycals is studied extensively. A highly selective [1,2]- or [2,3]-Wittig rearrangement is revealed that provides a novel class of stereodefined 3-C-branched glycals and C-glycosides, which are otherwise difficult to obtain.
Collapse